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Intel® Parallel Studio XE 2016 Composer Edition Fortran - Debug Solutions Release Notes

September 8, 2015, 5:24 am
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This page provides the current Release Notes for the Debug Solutions from Intel® Parallel Studio XE 2016 Composer Edition for Fortran Linux*, Windows* and OS X* products.

To get product updates, log in to the Intel® Software Development Products Registration Center.

For questions or technical support, visit Intel® Software Products Support.

For the top-level Release Notes, visit:

Table of Contents:

Change History

This section highlights important from the previous product version and changes in product updates.

Changes since Intel® Parallel Studio XE 2015 Composer Edition

  • Support for additional Fortran intrinsics added to GNU* GDB
  • Improved display of OpenMP* tasks with GNU* GDB

Product Contents

  • Linux*:
    • GNU* Project Debugger (GDB) 7.8:
      Command line for host CPU and Intel® Xeon Phi™ coprocessor, and Eclipse* IDE plugin for offload enabled applications.
  • OS X*:
    • GNU* Project Debugger (GDB) 7.8:
      Command line for CPU only.
  • Windows*:
    • Intel® Debugger Extension for Intel® Many Integrated Core Architecture (Intel® MIC Architecture)
    • Fortran Expression Evaluator (FEE) as extension to debugger of Microsoft Visual Studio*

GNU* GDB

This section summarizes the changes, new features, customizations and known issues related to the GNU* GDB provided with Intel® Parallel Studio XE 2016 Composer Edition.
 

Features

GNU* GDB provided with Intel® Parallel Studio XE 2016 Composer Edition and above is based on GDB 7.8 with additional enhancements provided by Intel. This debugger replaces the Intel® Debugger from previous releases. In addition to features found in GDB 7.8, there are several other new features:
  • Intel® Processor Trace (Intel® PT) support for 5th generation Intel® Core™ Processors:
    (gdb) record btrace pt
  • Support for Intel® Many Integrated Core Architecture (Intel® MIC Architecture)
  • Support for Intel® Transactional Synchronization Extensions (Intel® TSX) (Linux & OSX)
  • Register support for Intel® Memory Protection Extensions (Intel® MPX) and Intel® Advanced Vector Extensions 512 (Intel® AVX-512)
  • Data Race Detection (pdbx):
    Detect and locate data races for applications threaded using POSIX* thread (pthread) or OpenMP* models
  • Branch Trace Store (btrace):
    Record branches taken in the execution flow to backtrack easily after events like crashes, signals, exceptions, etc.
All features are available for Linux*, but only Intel® TSX is supported for OS X*.
 

Using GNU* GDB

GNU* GDB provided with Intel® Parallel Studio XE 2016 Composer Edition comes in different versions:
  • IA-32/Intel® 64 debugger:
    Debug applications natively on IA-32 or Intel® 64 systems with gdb-ia on the command line.
    A standard Eclipse* IDE can be used for this as well if a graphical user interface is desired.
  • Intel® Xeon Phi™ coprocessor debugger (only for Linux*):
    Debug applications remotely on Intel® Xeon Phi™ coprocessor systems. The debugger will run on a host system and a debug agent (gdbserver) on the coprocessor.
    There are two options:
    • Use the command line version of the debugger with gdb-mic.
      This only works for native Intel® Xeon Phi™ coprocessor applications.
      A standard Eclipse* IDE can be used for this as well if a graphical user interface is desired.
    • Use an Eclipse* IDE plugin shipped with Intel® Parallel Studio XE 2016 Composer Edition.
      This works only for offload enabled Intel® Xeon Phi™ coprocessor applications. Instructions on how to use GNU* GDB can be found in the Documentation section.

Documentation

The documentation for the provided GNU* GDB can be found here:
<install-dir>/documentation_2016/en/debugger/gdb-ia/gdb.pdf<install-dir>/documentation_2016/en/debugger/gdb-mic/gdb.pdf<install-dir>/documentation_2016/en/debugger/ps2016/gs_gdb_ps_lin.htm

Known Issues and Changes

Not found: libtinfo.so.5

On some systems, using the GNU* GDB version that is provided by Intel fails due to a missing libtinfo.so.5 (e.g. SLES 11 SP3). If a package for libtinfo is not available, the following workaround can be applied:

$ sudo ln -s <path>/libncurses.so.5.6 <path>/libtinfo.so.5

As <path>, use the location of the system's ncurses library.

Problem using Eclipse* IDE with GDB*

If the GNU* GDB version that is provided by Intel is used within an Eclipse* IDE, you need to setup the environment before starting Eclipse* as described in the compiler documentation. See https://software.intel.com/en-us/articles/intel-c-compiler-160-for-linux-release-notes#doc for more information.

Safely ending offload debug sessions

To avoid issues like orphan processes or stale debugger windows when ending offload applications, manually end the debugging session before the application is reaching its exit code. The following procedure is recommended for terminating a debug session:
  1. Manually stop a debug session before the application reaches the exit-code.
  2. When stopped, press the red stop button in the tool-bar in the Intel® MIC Architecture-side debugger first. This will end the offloaded part of the application.
  3. Next, do the same for the CPU-side debugger.
  4. The link between the two debuggers will be kept alive. The Intel® MIC Architecture-side debugger will stay connected to the debug agent and the application will remain loaded in the CPU-side debugger, including all breakpoints that have been set.
  5. At this point, both debugger windows can safely be closed.

Intel® MIC Architecture-side debugger asserts on setting source directories

Setting source directories in the GNU* GDB might lead to an assertion.
Resolution:
The assertion should not affect debugger operation. To avoid the assertion anyway, don’t use source directory settings. The debugger will prompt you to browse for files it cannot locate automatically.

Debugger and debugged application required to be located on local drive (OS X* only)

In order to use the provided GNU* GDB (gdb-ia), it has to be installed on a local drive. As such, the entire Intel® Parallel Studio XE 2016 package has to be installed locally. Any application that is being debugged needs to be located on a local drive as well. This is a general requirement that’s inherent to GNU GDB with OS X*.

Debugging Fortran applications with Eclipse* IDE plugin for Intel® Xeon Phi™ coprocessor

If the Eclipse* IDE plugin for the Intel® Xeon Phi™ coprocessor is used for debugging Fortran applications, evaluation of arrays in the locals window might be incorrect. The underlying CDT applies the C/C++ syntax with brackets to arrays to retrieve their contents. This does not work for Fortran.
Solution: Use a fully qualified Fortran expression to retrieve the contents of arrays (e.g. with array sections like array(1:10)).
 
This section summarizes new features and changes, usage and known issues related to the Intel® Debugger Extension. This debugger extension only supports code targeting Intel® Many Integrated Core Architecture (Intel® MIC Architecture).
 

Features

  • Support for both native Intel® Xeon Phi™ coprocessor applications and host applications with offload extensions
  • Debug multiple Intel® Xeon Phi™ coprocessors at the same time (with offload extension)

Using the Intel® Debugger Extension

The Intel® Debugger Extension is a plug-in for the Microsoft Visual Studio* IDE. It transparently enables debugging of projects defined by  that IDE. Applications for Intel® Xeon Phi™ coprocessors can be either loaded and executed or attached to. This extension supports debugging of offload enabled code, using:
  • Microsoft Visual Studio* 2012
  • Microsoft Visual Studio* 2013
  • Microsoft Visual Studio* 2015

Documentation

The full documentation for the Intel® Debugger Extension can be found here:
<install-dir>\documentation_2016\en\debugger\ps2016\gs_gdb_ps_win.htm

Known Issues and Limitations

  • Disassembly window cannot be scrolled outside of 1024 bytes from the starting address within an offload section.
  • Handling of exceptions from the Intel® MIC Architecture application is not supported.
  • Starting an Intel® MIC Architecture native application is not supported. You can attach to a currently running application, though.
  • The Thread Window in Microsoft Visual Studio* offers context menu actions to Freeze, Thaw and Rename threads. These context menu actions are not functional when the thread is on an Intel® Xeon Phi™ coprocessor.
  • Setting a breakpoint right before an offload section sets a breakpoint at the first statement of the offload section. This only is true if there is no statement for the host between set breakpoint and offload section. This is normal Microsoft Visual Studio* breakpoint behavior but might become more visible with interweaved code from host and Intel® Xeon Phi™ coprocessor. The superfluous breakpoint for the offload section can be manually disabled (or removed) if desired.
  • Only Intel® 64 applications containing offload sections can be debugged with the Intel® Debugger Extension for Intel® Many Integrated Core Architecture.
  • Stepping out of an offload section does not step back into the host code. It rather continues execution without stopping (unless another event occurs). This is intended behavior.
  • The functionality “Set Next Statement” is not working within an offload section.
  • If breakpoints have been set for an offload section in a project already, starting the debugger might show bound breakpoints without addresses. Those do not have an impact on functionality.
  • For offload sections, using breakpoints with the following conditions of hit counts do not work: “break when the hit count is equal to” and “break when the hit count is a multiple of”.
  • The following options in the Disassembly window do not work within offload sections: “Show Line Numbers”, “Show Symbol Names” and “Show Source Code”
  • Evaluating variables declared outside the offload section shows wrong values.
  • Please consult the Output (Debug) window for detailed reporting. It will name unimplemented features (see above) or provide additional information required to configuration problems in a debugging session. You can open the window in Microsoft Visual Studio* via menu Debug->Windows->Output.
  • When debugging an offload-enabled application and a variable assignment is entered in the Immediate Window, the debugger may hang if assignments read memory locations before writing to them (for example, x=x+1). Please do not use the Immediate Window for changing variable values for offload-enabled applications.
  • Depending on the debugger extensions provided by Intel, the behavior (for example, run control) and output (for example, disassembly) could differ from what is experienced with the Microsoft Visual Studio* debugger. This is because of the different debugging technologies implemented by each and should not have a significant impact to the debugging experience.

Fortran Expression Evaluator (FEE) for debugging Fortran applications with Microsoft Visual Studio*

Fortran Expression Evaluator (FEE) is a plug-in for Microsoft Visual Studio* that is installed with Intel® Visual Fortran Compiler. It extends the standard debugger in Microsoft Visual Studio* IDE by handling Fortran expressions. There is no other change in usability.

Known Issues and Limitations

Debugging might fail when only Microsoft Visual Studio 2013/2015* is installed

For some FEE functionality the Microsoft Visual Studio 2012* libraries are required. One solution is to install Microsoft Visual Studio 2012* in addition to Microsoft Visual Studio 2013/2015*. An alternative is to install the "Visual C++ Redistributable for Visual Studio 2012 Update 4" found here.
If you installed Intel® Parallel Studio XE 2016 on a system without any Microsoft Visual Studio* version available, a Microsoft Visual Studio 2013* Shell (incl. libraries) will be installed. It might be that FEE does not work in that environment. Please install the redistributable package mentioned above in addition to enable FEE. A future update will solve this problem for the installation of the shell.

Debugging mixed language programs with Fortran does not work

To enable debugging Fortran code called from a .NET managed code application in Visual Studio 2012 or later, unset the following configuration:
Menu Tools->Options, under section Debugging->General, clear the "Managed C++ Compatibility Mode" or "Use Managed Compatibility Mode" check box

Debug Options Compatibility Mode

For any managed code application, one must also check the project property Debug > Enable unmanaged code debugging.

FEE Truncates Entries in Locals Window

To increase debugging performance, the maximum number of locals queried by the debug engine is limited with Intel® Parallel Studio XE 2016 and later releases. If a location in the source code has more than that number of locals, they are truncated and a note is shown:

Note: Too many locals! For performance reasons the list got cut after 500 entries!

The threshold can be controlled via the environment variable FEE_MAX_LOCALS. Specify a positive value for the new threshold (default is 500). A value of -1 can be used to turn off truncation entirely (restores previous behavior) - but at the cost of slower debug state transitions. In order to take effect, Microsoft Visual Studio* needs to be restarted.

Problem with Debugging C# Applications

If Microsoft Visual Studio 2015* is used, debugging of C# applications might cause problems, i.e. evaluations like watches won't work.If you experience issues like that, try to enable "Managed Compatibility Mode". More details how to enable it can be found here:
http://blogs.msdn.com/b/visualstudioalm/archive/2013/10/16/switching-to-managed-compatibility-mode-in-visual-studio-2013.aspx

The problem is known and will be fixed with a future version.

Attributions

This product includes software developed at:

GDB – The GNU* Project Debugger

Copyright Free Software Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.

This program is free software; you can redistribute it and/or modify it under the terms and conditions of the GNU General Public License, version 2, as published by the Free Software Foundation.

This program is distributed in the hope it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.

GNU* Free Documentation License

Version 1.3, 3 November 2008

 

Copyright © 2000, 2001, 2002, 2007, 2008 Free Software Foundation, Inc. <http://fsf.org/>

 

Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed.

 

0. PREAMBLE

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This License is a kind of "copyleft", which means that derivative works of the document must themselves be free in the same sense. It complements the GNU General Public License, which is a copyleft license designed for free software.

We have designed this License in order to use it for manuals for free software, because free software needs free documentation: a free program should come with manuals providing the same freedoms that the software does. But this License is not limited to software manuals; it can be used for any textual work, regardless of subject matter or whether it is published as a printed book. We recommend this License principally for works whose purpose is instruction or reference.

 

1. APPLICABILITY AND DEFINITIONS

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The Document may include Warranty Disclaimers next to the notice which states that this License applies to the Document. These Warranty Disclaimers are considered to be included by reference in this License, but only as regards disclaiming warranties: any other implication that these Warranty Disclaimers may have is void and has no effect on the meaning of this License.

 

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You may copy and distribute the Document in any medium, either commercially or noncommercially, provided that this License, the copyright notices, and the license notice saying this License applies to the Document are reproduced in all copies, and that you add no other conditions whatsoever to those of this License. You may not use technical measures to obstruct or control the reading or further copying of the copies you make or distribute. However, you may accept compensation in exchange for copies. If you distribute a large enough number of copies you must also follow the conditions in section 3.

You may also lend copies, under the same conditions stated above, and you may publicly display copies.

 

3. COPYING IN QUANTITY

If you publish printed copies (or copies in media that commonly have printed covers) of the Document, numbering more than 100, and the Document's license notice requires Cover Texts, you must enclose the copies in covers that carry, clearly and legibly, all these Cover Texts: Front-Cover Texts on the front cover, and Back-Cover Texts on the back cover. Both covers must also clearly and legibly identify you as the publisher of these copies. The front cover must present the full title with all words of the title equally prominent and visible. You may add other material on the covers in addition. Copying with changes limited to the covers, as long as they preserve the title of the Document and satisfy these conditions, can be treated as verbatim copying in other respects.

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If you publish or distribute Opaque copies of the Document numbering more than 100, you must either include a machine-readable Transparent copy along with each Opaque copy, or state in or with each Opaque copy a computer-network location from which the general network-using public has access to download using public-standard network protocols a complete Transparent copy of the Document, free of added material. If you use the latter option, you must take reasonably prudent steps, when you begin distribution of Opaque copies in quantity, to ensure that this Transparent copy will remain thus accessible at the stated location until at least one year after the last time you distribute an Opaque copy (directly or through your agents or retailers) of that edition to the public.

It is requested, but not required, that you contact the authors of the Document well before redistributing any large number of copies, to give them a chance to provide you with an updated version of the Document.

 

4. MODIFICATIONS

You may copy and distribute a Modified Version of the Document under the conditions of sections 2 and 3 above, provided that you release the Modified Version under precisely this License, with the Modified Version filling the role of the Document, thus licensing distribution and modification of the Modified Version to whoever possesses a copy of it. In addition, you must do these things in the Modified Version:

A. Use in the Title Page (and on the covers, if any) a title distinct from that of the Document, and from those of previous versions (which should, if there were any, be listed in the History section of the Document). You may use the same title as a previous version if the original publisher of that version gives permission.

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C. State on the Title page the name of the publisher of the Modified Version, as the publisher.

D. Preserve all the copyright notices of the Document.

E. Add an appropriate copyright notice for your modifications adjacent to the other copyright notices.

F. Include, immediately after the copyright notices, a license notice giving the public permission to use the Modified Version under the terms of this License, in the form shown in the Addendum below.

G. Preserve in that license notice the full lists of Invariant Sections and required Cover Texts given in the Document's license notice.

H. Include an unaltered copy of this License.

I. Preserve the section Entitled "History", Preserve its Title, and add to it an item stating at least the title, year, new authors, and publisher of the Modified Version as given on the Title Page. If there is no section Entitled "History" in the Document, create one stating the title, year, authors, and publisher of the Document as given on its Title Page, then add an item describing the Modified Version as stated in the previous sentence.

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N. Do not retitle any existing section to be Entitled "Endorsements" or to conflict in title with any Invariant Section.

O. Preserve any Warranty Disclaimers.

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The author(s) and publisher(s) of the Document do not by this License give permission to use their names for publicity for or to assert or imply endorsement of any Modified Version.

 

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In the combination, you must combine any sections Entitled "History" in the various original documents, forming one section Entitled "History"; likewise combine any sections Entitled "Acknowledgements", and any sections Entitled "Dedications". You must delete all sections Entitled "Endorsements".

 

6. COLLECTIONS OF DOCUMENTS

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You may extract a single document from such a collection, and distribute it individually under this License, provided you insert a copy of this License into the extracted document, and follow this License in all other respects regarding verbatim copying of that document.

 

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8. TRANSLATION

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9. TERMINATION

You may not copy, modify, sublicense, or distribute the Document except as expressly provided under this License. Any attempt otherwise to copy, modify, sublicense, or distribute it is void, and will automatically terminate your rights under this License.

 

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10. FUTURE REVISIONS OF THIS LICENSE

The Free Software Foundation may publish new, revised versions of the GNU Free Documentation License from time to time. Such new versions will be similar in spirit to the present version, but may differ in detail to address new problems or concerns. See http://www.gnu.org/copyleft/.

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11. RELICENSING

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"Incorporate" means to publish or republish a Document, in whole or in part, as part of another Document.

An MMC is "eligible for relicensing" if it is licensed under this License, and if all works that were first published under this License somewhere other than this MMC, and subsequently incorporated in whole or in part into the MMC, (1) had no cover texts or invariant sections, and (2) were thus incorporated prior to November 1, 2008.

The operator of an MMC Site may republish an MMC contained in the site under CC-BY-SA on the same site at any time before August 1, 2009, provided the MMC is eligible for relicensing.

 

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INFORMATION IN THIS DOCUMENT IS PROVIDED IN CONNECTION WITH INTEL PRODUCTS. NO LICENSE, EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE, TO ANY INTELLECTUAL PROPERTY RIGHTS IS GRANTED BY THIS DOCUMENT. EXCEPT AS PROVIDED IN INTEL'S TERMS AND CONDITIONS OF SALE FOR SUCH PRODUCTS, INTEL ASSUMES NO LIABILITY WHATSOEVER, AND INTEL DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY, RELATING TO SALE AND/OR USE OF INTEL PRODUCTS INCLUDING LIABILITY OR WARRANTIES RELATING TO FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABILITY, OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT.
UNLESS OTHERWISE AGREED IN WRITING BY INTEL, THE INTEL PRODUCTS ARE NOT DESIGNED NOR INTENDED FOR ANY APPLICATION IN WHICH THE FAILURE OF THE INTEL PRODUCT COULD CREATE A SITUATION WHERE PERSONAL INJURY OR DEATH MAY OCCUR.
Intel may make changes to specifications and product descriptions at any time, without notice. Designers must not rely on the absence or characteristics of any features or instructions marked "reserved" or "undefined." Intel reserves these for future definition and shall have no responsibility whatsoever for conflicts or incompatibilities arising from future changes to them. The information here is subject to change without notice. Do not finalize a design with this information.
The products described in this document may contain design defects or errors known as errata which may cause the product to deviate from published specifications. Current characterized errata are available on request.
Contact your local Intel sales office or your distributor to obtain the latest specifications and before placing your product order.
Copies of documents which have an order number and are referenced in this document, or other Intel literature, may be obtained by calling 1-800-548-4725, or go to:  http://www.intel.com/design/literature.htm

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http://www.intel.com/products/processor_number/

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* Other names and brands may be claimed as the property of others.

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Intel(R) System Studio Release Notes - PDFs

September 8, 2015, 8:31 am
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Intel(R) System Studio Release Notes - PDFs

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Intel® System Studio Sample: Hello World

September 7, 2015, 11:00 pm
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This is a simple "Hello World" example that illustrates how to set up the environment to build embedded application with Intel Compiler (ICC) for Windows*, Linux* Host and Yocto* Linux* Target , in various usage models like command line, IDEs.

By Downloading or copying all or any part of the sample source code, you agree to the terms of the Intel® Sample Source Code License Agreement.

To learn more Intel System Studio samples and tutorials, please visit: https://software.intel.com/en-us/articles/intel-system-studio-tutorials

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Intel® System Studio - Solutions, Tips and Tricks

September 8, 2015, 9:59 am
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Intel® Parallel Studio XE 2016 for Linux* or Intel® System Studio 2016: Compilervars Set $MANPATH Incorrectly

September 9, 2015, 5:06 am
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Problem:
With Intel® Parallel Studio XE 2016 for Linux* (initial release) or Intel® System Studio 2016 (initial release), sourcing the compilervars.[csh|sh] scripts (simply compilervars in the following) might set $MANPATH incorrectly. This can result in not being able to view the system man pages anymore. This is only temporarily since being limited to the shell environment for which the scripts have been sourced. Opening a new shell does show the correct $MANPATH again, according to the system configuration.

Example:


$ man ls

<shows man page for ls>

 

$ source <install-dir>/compilers_and_libraries/linux/bin/compilervars.sh intel64

 

$ man ls

No manual entry for ls

See 'man 7 undocumented' for help when manual pages are not available.

Some man pages from Intel® Software Development Products are still shown correctly, like man icc, man ifort, ...

Environment:
Intel® Parallel Studio XE 2016 for Linux* or Intel® System Studio 2016, with Intel® C++ Compiler and/or Intel® Fortran Compiler 16.0.
Some Linux* distributions, like Ubuntu*, are affected but not all.

Root Cause:
The compilervars scripts also source the ones for the debug solutions (debuggervars.[csh|sh]) which in turn modify the $MANPATH incorrectly.

Resolution:
Since the modification of the shell's environment via compilervars is only temporary, opening another shell has a correct $MANPATH again. That other shell can be used to view the man pages.
A fix will be available with the next update.

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Product Activation Failed

September 9, 2015, 8:01 am
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What to do when installation program fails to establish internet connection for activation?

Product activation using a serial number requires a working Internet connection to the Intel® Registration Center. If Internet connection fails and you cannot fix the problems you need to activate your product offline. Please check out this article: 'How Do I Get a License File for an Offline Installation'

Questions about Intel® Parallel Studio XE 2016 or Intel® System Studio 2016 upgrade?
Check out this article: 'Required Product License Upgrade for Intel® Parallel Studio XE 2016 and Intel® System Studio 2016'

Problems with offline activation?
File an Intel® Premier Support request. Alternatively, if you cannot login to Premier Support, use the Intel® Developer Zone support forum.

  • Intel® Premier Support (preferred):
    Login to the Intel® Premier Support portal, select your product and the following categories:

         Issue Title: Product activation failed
         Customer Issue Category: Licensing
         Customer Issue Sub-category: Defect

    Provide a comprehensive error description (best with screenshots), submit your request and wait for the confirmation email from the Intel® Premier Support.

  • Intel® Developer Zone
    Go to the Intel® Developer Zone, Click on 'New topic' and fill out the following:

         Subject: Product activation failed

    Provide a comprehensive error description, but DO NOT include confidential data such as serial number or email address in the initial post. An Intel support person will answer and open a private thread to communicate missing data if required.

Problems with filing a support request?
Please contact our Support Help Page.

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Intel® System Studio Release Notes and Getting Started Documents

September 9, 2015, 10:02 am
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This page provides the current Release Notes and Getting Started Documents for Intel® System Studio 2016.

To get product updates, log in to the Intel® Software Development Products Registration Center.

For questions or technical support, visit Intel® Software Products Support.

Contents

 

Current Release Notes

Intel® System Studio 2016 for Linux* and Android*(1)

(1) Android*, Linux*, Embedded Linux*, Yocto Project*, Wind River* Linux*

Studio ComponentLinux* Host Windows* Host

What's New

What's new?

What's new?

Intel® System Studio (full product)

Version 2016

Version 2016

Intel® C++ Compiler

Version 16.0

Version 16.0

Intel® Math Kernel Library

Version 11.3

Version 11.3

Intel® Integrated Performance Primitives

Version 9.0

Version 9.0

Intel® Threading Building Blocks

Version 4.4

Version 4.4

Intel® VTune™ Amplifier for Systems

Version 2016

Version 2016

Intel® Energy Profiler

Version 2016

Version 2016

Intel® Inspector for Systems

Version 2016

Version 2016

Intel® System Studio System Analyzer,Frame Analyzer and Platform Analyzer

Version 2015 R1

Version 2015 R1

Intel® System Debugger

Version 2016

Version 2016

GDB - The GNU* Project Debugger

Version 7.8.1

Version 7.8.1

Intel® System Studio 2016 for Windows*

Studio ComponentWindows* Host

What's New

What's new?

Intel® System Studio for Windows* (full product)

Version 2016

Intel® C++ Compiler

Version 16.0

Intel® Math Kernel Library

Version 11.3

Intel® Integrated Performance Primitives

Version 9.0

Intel® Threading Building Blocks

Version 4.4

Intel® VTune™ Amplifier for Systems

Version 2016

Intel® Energy Profiler

Version 2016

Intel® Inspector for Systems

Version 2016

Intel® System Studio System Analyzer, Frame Analyzer and Platform Analyzer for Windows*

Version 2015 R1

Intel® System DebuggerVersion 2016

Older Release Notes

Intel® System Studio

Linux* Host Windows* Host
 Version 2015 Update 3Version 2015 Update 3
 

Version 2015 Update 2

Version 2015 Update 2

 

Version 2015 Update 1

Version 2015 Update 1

 

Version 2015

Version 2015

 

Version 2014 Update 2

Version 2014 Update 2

 

Version 2014 Update 1

Version 2014 Update 1

 

Version 2014

Version 2014

 

Version 2013 Update 2

 

 

Version 2013 Update 1

 

 

Version 2013

 

 

Intel® System Studio 2015

Getting Started Guide

Studio Componentfor Linux* and Android*
(Linux* Host)		for Linux* and Android*
(Windows* Host)		for Windows*

Intel® System Studio

Getting Started Guide

Getting Started Guide

Getting Started Guide

Intel® C++ Compiler for Linux* and Android* targets

Intel® C++ Compiler Getting Started Guide

Intel® C++ Compiler Getting Started Guide

 

Intel® Integrated Performance Primitives

Getting Started with Intel® Integrated Performance Primitives
Building Android* NDK Applications with Intel® IPP

Getting Started with Intel® Integrated Performance Primitives

Getting Started with Intel® Integrated Performance Primitives

Intel® Math Kernel Library

Using Intel® Math Kernel Library

Using Intel® Math Kernel Library

Using Intel® Math Kernel Library

Intel® VTune™ Amplifier for Systems

Getting Started Guide

Getting Started Guide

Getting Started Guide

Intel® Inspector for Systems

Intel® Inspector for Systems Getting Started Guide

Intel® Inspector for Systems Getting Started Guide

Intel® Inspector for Systems Getting Started Guide

Intel® System Studio System Analyzer

Intel® System Studio System Analyzer Getting Started Guide

Intel® System Studio System Analyzer Getting Started Guide

Intel® System Studio System Analyzer Getting Started Guide

Intel® System Debugger

Intel® System Debugger Quickstart Guide

Intel® System Debugger Quickstart Guide

 

Intel-enhanced GNU* GDB

GNU* GDB Getting Started Guide
GNU* GDB Quickstart Guide

GNU* GDB Getting Started Guide
GNU* GDB Quickstart Guide

 

 

Intel® System Studio 2015

User Guide

Studio ComponentLinux* HostWindows* Host

Intel® System Studio

User Guide

User Guide

Intel® Math Kernel Library

User's Guide for Intel® Math Kernel Library

User's Guide for Intel® Math Kernel Library (Linux* Target)
User's Guide for Intel® Math Kernel Library (Windows* Target)

Intel® VTune™ Amplifier for Systems

Sampling Enabling Product User's Guide

Sampling Enabling Product User's Guide

Intel® Energy Profiler

SoC Watch Tool User's Guide

SoC Watch Tool User's Guide

 

WakeUp Watch Tool for Android* User's Guide

WakeUp Watch Tool for Android* User's Guide

Graphics Performance Analysis Tools

Intel® System Studio System Analyzer

Intel® System Studio System Analyzer, Frame Analyzer and Platform Analyzer

Intel® System Debugger

Use Cases for the Intel® System Debugger

Use Cases for the Intel® System Debugger

 

Intel® System Debugger User's Guide

Intel® System Debugger User's Guide

SVEN SDK

SVEN SDK User Guide

SVEN SDK User Guide

 

SVEN Trace Viewer User Guide

SVEN Trace Viewer User Guide

GDB - The GNU* Project Debugger

Debugging with GDB

Debugging with GDB

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Intel® System Studio Training Materials

September 9, 2015, 10:04 am
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Here are useful slide decks to enhance your learning of Intel System Studio 2016. For Intel System Studio 2015 Training Slides, please go here. For more in-depth Knowledge Base articles about all the components of this tool suite, go here.

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Intel® XDK FAQs - Debug & Test

September 9, 2015, 3:17 pm
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Q1: What are the requirements for Testing on Wi-Fi?
  1. 1) Both Intel XDK and App Preview mobile app must be logged in with the same user credentials.
  2. 2) Both devices must be on the same subnet.

Note: Your computer's Security Settings may be preventing Intel XDK from connecting with devices on your network. Double check your settings for allowing programs through your firewall. At this time, testing on Wi-Fi does not work within virtual machines.

Q2: How do I configure app preview to work over Wi-Fi?

1) Ensure that both Intel XDK and App Preview mobile app are logged in with the same user credentials and are on the same subnet

2) Launch App Preview on the device 

3) Log into your Intel XDK account 

4) Select "Local Apps" to see a list of all the projects in Intel XDK Projects tab 

5) Select desired app from the list to run over Wi-Fi  

Note: Ensure the app source files are referenced from the right source directory. If it isn't, on the Projects Tab, change the 'source' directory so it is the same as the 'project' directory and move everything in the source directory to the project directory. Remove the source directory and try to debug over local Wi-Fi.

Q3: How do I clear app preview cache and memory?

[Android*] Simply kill the app running on your device as an Active App on Android* by swiping it away after clicking the "Recent" button in the navigation bar. Alternatively, you can clear data and cache for the app from under Settings App > Apps > ALL > App Preview. 

[iOS*] By double tapping the Home button then swiping the app away. 

[Windows*] You can use the Windows* Cache Cleaner app to do so.

Q4: What are the Android* devices supported by App Preview?

We officially only support and test Android* 4.x and higher, although you can use Cordova for Android* to build for Android* 2.3 and above. For older Android* devices, you can use the build system to build apps and then install and run them on the device to test. To help in your testing, you can include the weinre script tag from the Test tab in your app before you build your app. After your app starts up, you should see the Test tab console light up when it sees the weinre script tag contact the device (push the "begin debugging on device" button to see the console). Remember to remove the weinre script tag before you build for the store. 

Q5: What do I do if Intel XDK stops detecting my Android* device?

When Intel XDK is not running, kill all adb processes that are running on your workstation and then restart Intel XDK as conflicts between different versions of adb frequently causes such issues. Ensure that applications such as Eclipse that run copies of adb are not running. You may scan your disk for copies of adb: 

[Linux*/OS X*]:

$ sudo find / -name adb -type f

[Windows*]:

> cd \> dir /s adb.exe

For more information on Android* USB debug, visit the Intel XDK documentation on debugging and testing.

Q6: My third party plugins do not show up on the debug tab. How do I debug an app that contains third party plugins?

If you are using the Debug, Emulate or Test tabs you will not see any third-party plugins. At the moment, the only way to debug an app that contains a third-party plugin is to build it and debug the built app installed on your device. We are working on a solution to work with third-party plugins, but it is still in development. 

[Android*]

1) For Crosswalk* or Cordova for Android* build, create an intelxdk.config.additions.xml file that contains the following lines: 

<!-- Change the debuggable preference to true to build a remote CDT debuggable app for --><!-- Crosswalk* apps on Android* 4.0+ devices and Cordova apps on Android* 4.4+ devices. --><preference name="debuggable" value="true" /><!-- Change the debuggable preference to false before you build for the store. -->

and place it in the root directory of your project (in the same location as your other intelxdk.config.*.xml files). Note that this will only work with Crosswalk* on Android* 4.0 or newer devices or, if you use the standard Cordova for Android* build, on Android* 4.4 or greater devices.

2) Build the Android* app

3) Connect your device to your development system via USB and start app

4) Start Chrome on your development system and type "chrome://inspect" in the Chrome URL bar. You should see your app in the list of apps and tabs presented by Chrome, you can then push the "inspect" link to get a full remote CDT session to your built app. Be sure to close Intel XDK before you do this, sometimes there is interference between the version of adb used by Chrome and that used by Intel XDK, which can cause a crash. You might have to kill the adb process before you start Chrome (after you exit the Intel XDK). 

[iOS*]

Refer to the instructions on the updated Debug tab docs to get on-device debugging. We do not have the ability to build a development version of your iOS* app yet, so you cannot use this technique to build iOS* apps. However, you can use the weinre script from the Test tab into your iOS* app when you build it and use the Test tab to remotely access your built iOS* app. This works best if you include a lot of console.log messages.

[Windows* 8]

You can use the test tab which would give you a weinre script. You can include it in the app that you build, run it and connect to the weinre server to work with the console.  

Alternatively, you can use App Center to setup and access the weinre console (go here and use the "bug" icon).  

Another approach is to write console.log messages to a <textarea> screen on your app. See either of these apps for an example of how to do that:  

Q7:  Why does my device show as offline on Intel XDK Debug?
“Media” mode is the default USB connection mode, but due to some unidentified reason, it frequently fails to work over USB on Windows* machines. Configure the USB connection mode on your device for "Camera" instead of "Media" mode.
Q8: What do I do if my remote debugger does not launch?

You can try the following to have your app run on the device via debug tab:  

  • Place the intelxdk.js library before the </body> tag
  • Place your app specific JavaScript files after it
  • Place the call to initialize your app in the device ready event function
Q9: Why do I get an "error installing App Preview Crosswalk" message when trying to debug on device?

You may be running into a RAM or storage problem on your Android device; as in, not enough RAM available to load and install the special App Preview Crosswalk app (APX) that must be installed on your device. See this site (http://www.devicespecifications.com) for information regarding your device. If your device has only 512 MB of RAM, which is a marginal amount for use with the Intel XDK Debug tab, you may have difficulties getting APX to install.

You may have to do one or all of the following:

  • remove as many apps from RAM as possible before installing APX (reboot the device is the simplest approach)
  • make sure there is sufficient storage space in your device (uninstall any unneeded apps on the device)
  • install APX by hand

The last step is the hardest, but only if you are uncomfortable with the command-line:

  1. while attempting to install APX (above) the XDK downloaded a copy of the APK that must be installed on your Android device
  2. find that APK that contains APX
  3. install that APK manually onto your Android device using adb

To find the APK, on a Mac:

$ cd ~/Library/Application\ Support/XDK
$ find . -name *apk

To find the APK, on a Windows machine:

> cd %LocalAppData%\XDK> dir /s *.apk

For each version of Crosswalk that you have attempted to use (via the Debug tab), you will find a copy of the APK file (but only if you have attempted to use the Debug tab and the XDK has successfully downloaded the corresponding version of APX). You should find something similar to:

./apx_download/12.0/AppAnalyzer.apk

following the searches, above. Notice the directory that specifies the Crosswalk version (12.0 in this example). The file named AppAnalyzer.apk is APX and is what you need to install onto your Android device.

Before you install onto your Android device, you can double-check to see if APX is already installed:

  • find "Apps" or "Applications" in your Android device's "settings" section
  • find "App Preview Crosswalk" in the list of apps on your device (there can be more than one)

If you found one or more App Preview Crosswalk apps on your device, you can see which versions they are by using adb at the command-line (this assumes, of course, that your device is connected via USB and you can communicate with it using adb):

  1. type adb devices at the command-line to confirm you can see your device
  2. type adb shell 'pm list packages -f' at the command-line
  3. search the output for the word app_analyzer

The specific version(s) of APX installed on your device end with a version ID. For example: com.intel.app_analyzer.v12 means you have APX for Crosswalk 12 installed on your device.

To install a copy of APX manually, cd to the directory containing the version of APX you want to install and then use the following adb command:

$ adb install AppAnalyzer.apk

If you need to remove the v12 copy of APX, due to crowding of available storage space, you can remove it using the following adb command:

$ adb uninstall com.intel.app_analyzer.v12

or

$ adb shell am start -a android.intent.action.DELETE -d package:com.intel.app_analyzer.v12

The second one uses the Android undelete tool to remove the app. You'll have to respond to a request to undelete on the Android device's screen. See this SO issue for details. Obviously, if you want to uninstall a different version of APX, specify the package ID corresponding to that version of APX.

Q10: Why is Chrome remote debug not working with my Android or Crosswalk app?

For a detailed discussion regarding how to use Chrome on your desktop to debug an app running on a USB-connected device, please read this doc page Remote Chrome* DevTools* (CDT).

Check to be sure the following conditions have been met:

  • The version of Chrome on your desktop is greater than or equal to the version of the Chrome webview in which you are debugging your app.

    For example, Crosswalk 12 uses the Chrome 41 webview, so you must be running Chrome 41 or greater on your desktop to successfully attach a remote Chrome debug session to an app built with Crosswalk 12. The native Chrome webview in an Android 4.4.2 device is Chrome 30, so your desktop Chrome must be greater than or equal to Chrome version 30 to debug an app that is running on that native webview.
  • Your Android device is running Android 4.4 or higher, if you are trying to remote debug an app running in the device's native webview, and it is running Android 4.0 or higher if you are trying to remote debug an app running Crosswalk.

    When debugging against the native webview, remote debug with Chrome requires that the remote webview is also Chrome; this is not guaranteed to be the case if your Android device does not include a license for Google services. Some manufacturers do not have a license agreement with Google for distribution of the Google services on their devices and, therefore, may not include Chrome as their native webview, even if they are an Android 4.4 or greater device.
  • Your app has been built to allow for remote debug.

    Within the intelxdk.config.additions.xml file you must include this line: <preference name="debuggable" value="true" /> to build your app for remote debug. Without this option your app cannot be attached to for remote debug by Chrome on your desktop.
Q11: How do I detect if my code is running in the Emulate tab?

In the obsolete intel.xdk apis there is a property you can test to detect if your app is running within the Emulate tab or on a device. That property is intel.xdk.isxdk. A simple alternative is to perform the following test:

if( window.tinyHippos )

If the test passes (the result is true) you are executing in the Emulate tab.

Q12: Never ending "Transferring your project files to the Testing Device" message from Debug tab; results in no Chrome DevTools debug console.

This is a known issue but a resolution for the problem has not yet been determined. If you find yourself facing this issue you can do the following to help resolve it.

On a Windows machine, exit the Intel XDK and open a "command prompt" window:

> cd %LocalAppData%\XDK\> rmdir cdt_depot /s/q

On a Mac or Linux machine, exit the Intel XDK and open a "terminal" window:

$ find ~ -name global-settings.xdk
$ cd <location-found-above>
$ rm -Rf cdt_depot

Restart the Intel XDK and try the Debug tab again. This procedure is deleting the cached copies of the Chrome DevTools that were retrieved from the corresponding App Preview debug module that was installed on your test device.

One observation that causes this problem is the act of removing one device from your USB and attaching a new device for debug. A workaround that helps sometimes, when switching between devices, is to:

  • switch to the Develop tab
  • close the XDK
  • detach the old device from the USB
  • attach the new device to your USB
  • restart the XDK
  • switch to the Debug tab
Q13: Can you integrate the iOS Simulator as a testing platform for Intel XDK projects?

The iOS simulator only runs on Apple Macs... We're trying to make the Intel XDK accessible to developers on the most popular platforms: Windows, Mac and Linux. Additionally, the iOS simulator requires a specially built version of your app to run, you can't just load an IPA onto it for simulation.

Q14: What is the purpose of having only a partial emulation or simulation in the Emulate tab?

There's no purpose behind it, it's simply difficult to emulate/simulate every feature and quirk of every device.

Q15: Not everyone can afford hardware for testing, especially iOS devices; what can I do?

You can buy a used iPod and that works quite well for testing iOS apps. Of course, the screen is smaller and there is no compass or phone feature, but just about everything else works like an iPhone. If you need to do a lot of iOS testing it is worth the investment. A new iPod costs $200 in the US. Used ones should cost less than that. Make sure you get one that can run iOS 8.

Q16: Is testing on Crosswalk on a virtual Android device inside VirtualBox good enough?

When you run the Android emulator you are running on a fictitious device, but it is a better emulation than what you get with the iOS simulator and the Intel XDK Emulate tab. The Crosswalk webview further abstracts the system so you get a very good simulation of a real device. However, considering how inexpensive and easy Android devices are to obtain, we highly recommend you use a real device (with the Debug tab), it will be much faster and even more accurate than using the Android emulator.

Q17: Why isn't the Intel XDK emulation as good as running on a real device?

Because the Intel XDK Emulate tab is a Chromium browser, so what you get is the behavior inside that Chromium browser along with some conveniences that make it appear to be a hybrid device. It's poorly named as an emulator, but that was the name given to it by the original Ripple Emulator project. What it is most useful for is simulating most of the core Cordova APIs and your basic application logic. After that, it's best to use real devices with the Debug tab.

Back to FAQs Main

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Intel® XDK FAQs - General

September 9, 2015, 3:39 pm
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Q1: How can I get started with Intel XDK?

There are plenty of videos and articles that you can go through here to get started. You could also start with some of our demo apps that you think fits your app idea best and learn or take parts from multiple apps.

Having prior understanding of how to program using HTML, CSS and JavaScript* is crucial to using Intel XDK. Intel XDK is primarily a tool for visualizing, debugging and building an app package for distribution.

You can do the following to access our demo apps:

  • Select Project tab
  • Select "Start a New Project"
  • Select "Samples and Demos"
  • Create a new project from a demo

If you have specific questions following that, please post it to our forums.

Q2: Can I use an external editor for development in Intel® XDK?

Yes, you can open your files and edit them in your favorite editor. However, note that you must use Brackets* to use the "Live Layout Editing" feature. Also, if you are using App Designer (the UI layout tool in Intel XDK) it will make many automatic changes to your index.html file, so it is best not to edit that file externally at the same time you have App Designer open.

Some popular editors among our users include:

  • Sublime Text* (Refer to this article for information on the Intel XDK plugin for Sublime Text*)
  • Notepad++* for a lighweight editor
  • Jetbrains* editors (Webstorm*)
  • Vim* the editor
Q3: How do I get code refactoring capability in Brackets*, the code editor in Intel® XDK?

You will have to add the "Rename JavaScript* Identifier" extension and "Quick Search" extension in Brackets* to achieve some sort of refactoring capability. You can find them in Extension Manager under File menu.

Q4: Why doesn’t my app show up in Google* play for tablets?

...to be written...

Q5: What is the global-settings.xdk file and how do I locate it?

global-settings.xdk contains information about all your projects in the Intel XDK, along with many of the settings related to panels under each tab (Emulate, Debug etc). For example, you can set the emulator to auto-refresh or no-auto-refresh. Modify this file at your own risk and always keep a backup of the original!

You can locate global-settings.xdk here:

  • Mac OS X*
    ~/Library/Application Support/XDK/global-settings.xdk
  • Microsoft Windows*
    %LocalAppData%\XDK
  • Linux*
    ~/.config/XDK/global-settings.xdk

If you are having trouble locating this file, you can search for it on your system using something like the following:

  • Windows:
    > cd /
    > dir /s global-settings.xdk
  • Mac and Linux:
    $ sudo find / -name global-settings.xdk
Q6: When do I use the intelxdk.js, xhr.js and cordova.js libraries?

The intelxdk and xhr libraries are only needed with legacy build tiles. The Cordova* library is needed for all. When building with Cordova* tiles, intelxdk and xhr libraries are ignored and so they can be omitted.

Q7: What is the process if I need a .keystore file?

Please send an email to html5tools@intel.com specifying the email address associated with your Intel XDK account in its contents.

Q8: How do I rename my project that is a duplicate of an existing project?

Make a copy of your existing project directory and delete the .xdk and .xdke files from them. Import it into Intel XDK using the ‘Import your HTML5 Code Base’ option and give it a new name to create a duplicate.

Q9: How do I try to recover when Intel XDK won't start or hangs?
  • If you are running Intel XDK on Windows* it must be Windows* 7 or higher. It will not run reliably on earlier versions.
  • Delete the "project-name.xdk" file from the project directory that Intel XDK is trying to open when it starts (it will try to open the project that was open during your last session), then try starting Intel XDK. You will have to "import" your project into Intel XDK again. Importing merely creates the "project-name.xdk" file in your project directory and adds that project to the "global-settings.xdk" file.
  • Rename the project directory Intel XDK is trying to open when it starts. Create a new project based on one of the demo apps. Test Intel XDK using that demo app. If everything works, restart Intel XDK and try it again. If it still works, rename your problem project folder back to its original name and open Intel XDK again (it should now open the sample project you previously opened). You may have to re-select your problem project (Intel XDK should have forgotten that project during the previous session).
  • Clear Intel XDK's program cache directories and files.
    On a [Windows*] machine this can be done using the following on a standard command prompt (administrator not required):
    > cd %AppData%\..\Local\XDK
    > del *.* /s/q
    To locate the "XDK cache" directory on [OS X*] and [Linux*] systems, do the following:
    $ sudo find / -name global-settings.xdk
    $ cd <dir found above>
    $ sudo rm -rf *
    You might want to save a copy of the "global-settings.xdk" file before you delete that cache directory and copy it back before you restart Intel XDK. Doing so will save you the effort of rebuilding your list of projects. Please refer to this question for information on how to locate the global-settings.xdk file.
  • If you save the "global-settings.xdk" file and restored it in the step above and you're still having hang troubles, try deleting the directories and files above, along with the "global-settings.xdk" file and try it again.
  • Do not store your project directories on a network share (Intel XDK currently has issues with network shares that have not yet been resolved). This includes folders shared between a Virtual machine (VM) guest and its host machine (for example, if you are running Windows* in a VM running on a Mac* host). This network share issue is a known issue with a fix request in place.

Please refer to this post for more details regarding troubles in a VM. It is possible to make this scenario work but it requires diligence and care on your part.

  • There have also been issues with running behind a corporate network proxy or firewall. To check them try running Intel XDK from your home network where, presumably, you have a simple NAT router and no proxy or firewall. If things work correctly there then your corporate firewall or proxy may be the source of the problem.
  • Issues with Intel XDK account logins can also cause Intel XDK to hang. To confirm that your login is working correctly, go to the Intel XDK App Center and confirm that you can login with your Intel XDK account. While you are there you might also try deleting the offending project(s) from the App Center.

If you can reliably reproduce the problem, please send us a copy of the "xdk.log" file that is stored in the same directory as the "global-settings.xdk" file to mailto:html5tools@intel.com.

Q10: Is Intel XDK an open source project? How can I contribute to the Intel XDK community?

No, It is not an open source project. However, it utilizes many open source components that are then assembled into Intel XDK. While you cannot contribute directly to the Intel XDK integration effort, you can contribute to the many open source components that make up Intel XDK.

The following open source components are the major elements that are being used by Intel XDK:

  • Node-Webkit
  • Chromium
  • Ripple* emulator
  • Brackets* editor
  • Weinre* remote debugger
  • Crosswalk*
  • Cordova*
  • App Framework*
Q11: How do I configure Intel XDK to use 9 patch png for Android* apps splash screen?

Intel XDK does support the use of 9 patch png for Android* apps splash screen. You can read up more at http://developer.android.com/tools/help/draw9patch.html on how to create a 9 patch png image. We also plan to incorporate them in some of our sample apps to illustrate their use.

Q12: How do I stop AVG from popping up the "General Behavioral Detection" window when Intel XDK is launched?

You can try adding nw.exe as the app that needs an exception in AVG.

Q13: What do I specify for "App ID" in Intel XDK under Build Settings?

Your app ID uniquely identifies your app. For example, it can be used to identify your app within Apple’s application services allowing you to use things like in-app purchasing and push notifications.

Here are some useful articles on how to create an App ID for your

iOS* App

Android* App

Windows* Phone 8 App

Q14: Is it possible to modify Android* Manifest through Intel XDK?

You cannot modify the AndroidManifest.xml file directly with our build system, as it only exists in the cloud. However, you may do so by creating a dummy plugin that only contains a plugin.xml file which can then be add to the AndroidManifest.xml file during the build process. In essence, you need to change the plugin.xml file of the locally cloned plugin to include directives that will make those modifications to the AndroidManifext.xml file. Here is an example of a plugin that does just that:

<?xml version="1.0" encoding="UTF-8"?><plugin xmlns="http://apache.org/cordova/ns/plugins/1.0" id="com.tricaud.webintent" version="1.0.0"><name>WebIntentTricaud</name><description>Ajout dans AndroidManifest.xml</description><license>MIT</license><keywords>android, WebIntent, Intent, Activity</keywords><engines><engine name="cordova" version=">=3.0.0" /></engines><!-- android --><platform name="android"><config-file target="AndroidManifest.xml" parent="/manifest/application"><activity android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale" android:label="@string/app_name" android:launchMode="singleTop" android:name="testa" android:theme="@android:style/Theme.Black.NoTitleBar"><intent-filter><action android:name="android.intent.action.SEND" /><category android:name="android.intent.category.DEFAULT" /><data android:mimeType="*/*" /></intent-filter></activity></config-file></platform></plugin>

You can check the AndroidManifest.xml created in the apk, using the apktool with the command line:  

aapt l -M appli.apk >text.txt

This adds the list of files of the apk and details of the AndroidManifest.xml to text.txt.

Q15: How can I share my Intel XDK app build?

You can send a link to your project via an email invite from your project settings page. However, a login to your account is required to access the file behind the link. Alternatively, you can download the build from the build page, onto your workstation, and push that built image to some location from which you can send a link to that image. 

Q16: Why does my iOS build fail when I am able to test it successfully on a device and the emulator?

Common reasons include:

  • Your App ID specified in the project settings do not match the one you specified in Apple's developer portal.
  • The provisioning profile does not match the cert you uploaded. Double check with Apple's developer site that you are using the correct and current distribution cert and that the provisioning profile is still active. Download the provisioning profile again and add it to your project to confirm.
  • In Project Build Settings, your App Name is invalid. It should be modified to include only alpha, space and numbers.
Q17: How do I add multiple domains in Domain Access? 

Here is the primary doc source for that feature.

If you need to insert multiple domain references, then you will need to add the extra references in the intelxdk.config.additions.xml file. This StackOverflow entry provides a basic idea and you can see the intelxdk.config.*.xml files that are automatically generated with each build for the <access origin="xxx" /> line that is generated based on what you provide in the "Domain Access" field of the "Build Settings" panel on the Project Tab. 

Q18: How do I build more than one app using the same Apple developer account?

On Apple developer, create a distribution certificate using the "iOS* Certificate Signing Request" key downloaded from Intel XDK Build tab only for the first app. For subsequent apps, reuse the same certificate and import this certificate into the Build tab like you usually would.

Q19: How do I include search and spotlight icons as part of my app?

Please refer to this article in the Intel XDK documentation. Create an intelxdk.config.additions.xml file in your top level directory (same location as the other intelxdk.*.config.xml files) and add the following lines for supporting icons in Settings and other areas in iOS*.

<!-- Spotlight Icon --><icon platform="ios" src="res/ios/icon-40.png" width="40" height="40" /><icon platform="ios" src="res/ios/icon-40@2x.png" width="80" height="80" /><icon platform="ios" src="res/ios/icon-40@3x.png" width="120" height="120" /><!-- iPhone Spotlight and Settings Icon --><icon platform="ios" src="res/ios/icon-small.png" width="29" height="29" /><icon platform="ios" src="res/ios/icon-small@2x.png" width="58" height="58" /><icon platform="ios" src="res/ios/icon-small@3x.png" width="87" height="87" /><!-- iPad Spotlight and Settings Icon --><icon platform="ios" src="res/ios/icon-50.png" width="50" height="50" /><icon platform="ios" src="res/ios/icon-50@2x.png" width="100" height="100" />

For more information related to these configurations, visit http://cordova.apache.org/docs/en/3.5.0/config_ref_images.md.html#Icons%20and%20Splash%20Screens.

For accurate information related to iOS icon sizes, visit https://developer.apple.com/library/ios/documentation/UserExperience/Conceptual/MobileHIG/IconMatrix.html

NOTE: The iPhone 6 icons will only be available if iOS* 7 or 8 is the target.

Cordova iOS* 8 support JIRA tracker: https://issues.apache.org/jira/browse/CB-7043

Q20: Does Intel XDK support Modbus TCP communication?

No, since Modbus is a specialized protocol, you need to write either some JavaScript* or native code (in the form of a plugin) to handle the Modbus transactions and protocol.

Q21: How do I sign an Android* app using an existing keystore?

Uploading an existing keystore in Intel XDK is not currently supported but you can send an email to html5tools@intel.com with this request. We can assist you there.

Q22: How do I build separately for different Android* versions?

Under the Projects Panel, you can select the Target Android* version under the Build Settings collapsible panel. You can change this value and build your application multiple times to create numerous versions of your application that are targeted for multiple versions of Android*.

Q23: How do I display the 'Build App Now' button if my display language is not English?

If your display language is not English and the 'Build App Now' button is proving to be troublesome, you may change your display language to English which can be downloaded by a Windows* update. Once you have installed the English language, proceed to Control Panel > Clock, Language and Region > Region and Language > Change Display Language.

Q24: How do I update my Intel XDK version?

When an Intel XDK update is available, an Update Version dialog box lets you download the update. After the download completes, a similar dialog lets you install it. If you did not download or install an update when prompted (or on older versions), click the package icon next to the orange (?) icon in the upper-right to download or install the update. The installation removes the previous Intel XDK version.

Q25: How do I import my existing HTML5 app into the Intel XDK?

If your project contains an Intel XDK project file (<project-name>.xdk) you should use the "Open an Intel XDK Project" option located at the bottom of the Projects List on the Projects tab (lower left of the screen, round green "eject" icon, on the Projects tab). This would be the case if you copied an existing Intel XDK project from another system or used a tool that exported a complete Intel XDK project.

If your project does not contain an Intel XDK project file (<project-name>.xdk) you must "import" your code into a new Intel XDK project. To import your project, use the "Start a New Project" option located at the bottom of the Projects List on the Projects tab (lower left of the screen, round blue "plus" icon, on the Projects tab). This will open the "Samples, Demos and Templates" page, which includes an option to "Import Your HTML5 Code Base." Point to the root directory of your project. The Intel XDK will attempt to locate a file named index.html in your project and will set the "Source Directory" on the Projects tab to point to the directory that contains this file.

If your imported project did not contain an index.html file, your project may be unstable. In that case, it is best to delete the imported project from the Intel XDK Projects tab ("x" icon in the upper right corner of the screen), rename your "root" or "main" html file to index.html and import the project again. Several components in the Intel XDK depend on this assumption that the main HTML file in your project is named index.hmtl. See Introducing Intel® XDK Development Tools for more details.

It is highly recommended that your "source directory" be located as a sub-directory inside your "project directory." This insures that non-source files are not included as part of your build package when building your application. If the "source directory" and "project directory" are the same it results in longer upload times to the build server and unnecessarily large application executable files returned by the build system. See the following images for the recommended project file layout.

Q26: I am unable to login to App Preview with my Intel XDK password.

On some devices you may have trouble entering your Intel XDK login password directly on the device in the App Preview login screen. In particular, sometimes you may have trouble with the first one or two letters getting lost when entering your password.

Try the following if you are having such difficulties:

  • Reset your password, using the Intel XDK, to something short and simple.

  • Confirm that this new short and simple password works with the XDK (logout and login to the Intel XDK).

  • Confirm that this new password works with the Intel Developer Zone login.

  • Make sure you have the most recent version of Intel App Preview installed on your devices. Go to the store on each device to confirm you have the most recent copy of App Preview installed.

  • Try logging into Intel App Preview on each device with this short and simple password. Check the "show password" box so you can see your password as you type it.

If the above works, it confirms that you can log into your Intel XDK account from App Preview (because App Preview and the Intel XDK go to the same place to authenticate your login). When the above works, you can go back to the Intel XDK and reset your password to something else, if you do not like the short and simple password you used for the test.

Q27: How do I completely uninstall the Intel XDK from my system?

See the instructions in this forum post: https://software.intel.com/en-us/forums/topic/542074. Then download and install the latest version from http://xdk.intel.com.

Q28: Is there a tool that can help me highlight syntax issues in Intel XDK?

Yes, you can use the various linting tools that can be added to the Brackets editor to review any syntax issues in your HTML, CSS and JS files. Go to the "File > Extension Manager..." menu item and add the following extensions: JSHint, CSSLint, HTMLHint, XLint for Intel XDK. Then, review your source files by monitoring the small yellow triangle at the bottom of the edit window (a green check mark indicates no issues).

Q29: How do I manage my Apps in Development?

You can manage them by logging into: https://appcenter.html5tools-software.intel.com/csd/controlpanel.aspx. This functionality will eventually be available within Intel XDK after which access to app center will be removed.

Q30: I need help with the App Security API plugin; where do I find it?

Visit the primary documentation book for the App Security API and see this forum post for some additional details.

Q31: When I install my app onto my test device Avast antivirus flags it as a possible virus, why?

If you are receiving a "Suspicious file detected - APK:CloudRep [Susp]" message it is likely due to the fact that you are side-loading the app onto your device (using a download link or by using adb) or you have downloaded your app from an "untrusted" store. See the following official explanation from Avast:

Your application was flagged by our cloud reputation system. "Cloud rep" is a new feature of Avast Mobile Security, which flags apks when the following conditions are met:
  1. The file is not prevalent enough; meaning not enough users of Avast Mobile Security have installed your APK.
  2. The source is not an established market (Google Play is an example of an established market).
If you distribute your app using Google Play (or any other trusted market) your users should not see any warning from Avast.
Q32: How do I add a Brackets extension to the editor that is part of the Intel XDK?

The number of Brackets extensions that are provided in the built-in edition of the Brackets editor are limited to insure stability of the Intel XDK product. Not all extensions are compatible with the edition of Brackets that is embedded within the Intel XDK. Adding incompatible extensions can cause the Intel XDK to quit working.

Despite this warning, there are useful extensions that have not been included in the editor and which can be added to the Intel XDK. Adding them is temporary, each time you update the Intel XDK (or if you reinstall the Intel XDK) you will have to "re-add" your Brackets extension. To add a Brackets extension, use the following procedure:

  • exit the Intel XDK
  • download a ZIP file of the extension you wish to add
  • on Windows, unzip the extension here: %LocalAppData%\Intel\XDK\xdk\brackets\b\extensions\dev
  • on Mac OS X, unzip the extension here: /Applications/Intel\ XDK.app/Contents/Resources/app.nw/brackets/b/extensions/dev
  • start the Intel XDK

Note that the locations given above are subject to change with new releases of the Intel XDK.

Q33: Why does my app or game require so many permissions on Android when built with the Intel XDK?

When you build your HTML5 app using the Intel XDK for Android or Android-Crosswalk you are creating a Cordova app. It may seem like you're not building a Cordova app, but you are. In order to package your app so it can be distributed via an Android store and installed on an Android device, it needs to be built as a hybrid app. The Intel XDK uses Cordova to create that hybrid app.

A pure Cordova app requires the NETWORK permission, it's needed to "jump" between your HTML5 environment and the native Android environment. Additional permissions will be added by any Cordova plugins you include with your application; which permissions are includes are a function of what that plugin does and requires.

Crosswalk for Android builds also require the NETWORK permission, because the Crosswalk image built by the Intel XDK includes support for Cordova. In addition, current versions of Crosswalk (12 and 14 at the time this FAQ was written)also require NETWORK STATE and WIFI STATE. There is an extra permission in some versions of Crosswalk (WRITE EXTERNAL STORAGE) that is only needed by the shared model library of Crosswalk, we have asked the Crosswalk project to remove this permission in a future Crosswalk version.

If you are seeing more than the following five permissions in your XDK-built Crosswalk app:

  • android.permission.INTERNET
  • android.permission.ACCESS_NETWORK_STATE
  • android.permission.ACCESS_WIFI_STATE
  • android.permission.INTERNET
  • android.permission.WRITE_EXTERNAL_STORAGE

then you are seeing permissions that have been added by some plugins. Each plugin is different, so there is no hard rule of thumb. The two "default" core Cordova plugins that are added by the Intel XDK blank templates (device and splash screen) do not require any Android permissions.

BTW: the permission list above comes from a Crosswalk 14 build. Crosswalk 12 builds do not included the last permission; it was added when the Crosswalk project introduced the shared model library option, which started with Crosswalk 13 (the Intel XDK does not support 13 builds).

Back to FAQs Main

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Intel® Parallel Studio XE 2016 Composer Edition C++ - Debug Solutions Release Notes

September 11, 2015, 6:44 am
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This page provides the current Release Notes for the Debug Solutions from Intel® Parallel Studio XE 2016 Composer Edition for C++ Linux*, Windows* and OS X* products.

To get product updates, log in to the Intel® Software Development Products Registration Center.

For questions or technical support, visit Intel® Software Products Support.

For the top-level Release Notes, visit:

Table of Contents:

Change History

This section highlights important from the previous product version and changes in product updates.

Changes since Intel® Parallel Studio XE 2015 Composer Edition

  • Improved display of OpenMP* tasks with GNU* GDB

Product Contents

This section lists the individual Debug Solutions components for each supported host OS. Not all components are available for all host OSes.

  • Linux*:
    • GNU* Project Debugger (GDB) 7.8:
      Command line for host CPU and Intel® Xeon Phi™ coprocessor, and Eclipse* IDE plugin for offload enabled applications.
    • Intel® Debugger for Heterogeneous Compute 2016
  • OS X*:
    • GNU* Project Debugger (GDB) 7.8:
      Command line for CPU only.
  • Windows*:
    • Intel® Debugger Extension for Intel® Many Integrated Core Architecture (Intel® MIC Architecture)

GNU* GDB

This section summarizes the changes, new features, customizations and known issues related to the GNU* GDB provided with Intel® Parallel Studio XE 2016 Composer Edition.
 

Features

GNU* GDB provided with Intel® Parallel Studio XE 2016 Composer Edition and above is based on GDB 7.8 with additional enhancements provided by Intel. This debugger replaces the Intel® Debugger from previous releases. In addition to features found in GDB 7.8, there are several other new features:
  • Intel® Processor Trace (Intel® PT) support for 5th generation Intel® Core™ Processors:
    (gdb) record btrace pt
  • Support for Intel® Many Integrated Core Architecture (Intel® MIC Architecture)
  • Support for Intel® Transactional Synchronization Extensions (Intel® TSX) (Linux & OSX)
  • Register support for Intel® Memory Protection Extensions (Intel® MPX) and Intel® Advanced Vector Extensions 512 (Intel® AVX-512)
  • Data Race Detection (pdbx):
    Detect and locate data races for applications threaded using POSIX* thread (pthread) or OpenMP* models
  • Branch Trace Store (btrace):
    Record branches taken in the execution flow to backtrack easily after events like crashes, signals, exceptions, etc.
  • Pointer Checker:
    Assist in finding pointer issues if compiled with Intel® C++ Compiler and having Pointer Checker feature enabled (see Intel® C++ Compiler documentation for more information)
  • Improved Intel® Cilk™ Plus Support:
    Serialized execution of Intel® Cilk™ Plus parallel applications can be turned on and off during a debug session using the following command:
    (gdb) set cilk-serialization [on|off]
All features are available for Linux*, but only Intel® TSX is supported for OS X*.
 

Using GNU* GDB

GNU* GDB provided with Intel® Parallel Studio XE 2016 Composer Edition comes in different versions:
  • IA-32/Intel® 64 debugger:
    Debug applications natively on IA-32 or Intel® 64 systems with gdb-ia on the command line.
    A standard Eclipse* IDE can be used for this as well if a graphical user interface is desired.
  • Intel® Xeon Phi™ coprocessor debugger (only for Linux*):
    Debug applications remotely on Intel® Xeon Phi™ coprocessor systems. The debugger will run on a host system and a debug agent (gdbserver) on the coprocessor.
    There are two options:
    • Use the command line version of the debugger with gdb-mic.
      This only works for native Intel® Xeon Phi™ coprocessor applications.
      A standard Eclipse* IDE can be used for this as well if a graphical user interface is desired.
    • Use an Eclipse* IDE plugin shipped with Intel® Parallel Studio XE 2016 Composer Edition.
      This works only for offload enabled Intel® Xeon Phi™ coprocessor applications. Instructions on how to use GNU* GDB can be found in the Documentation section.

Documentation

The documentation for the provided GNU* GDB can be found here:
<install-dir>/documentation_2016/en/debugger/gdb-ia/gdb.pdf<install-dir>/documentation_2016/en/debugger/gdb-mic/gdb.pdf<install-dir>/documentation_2016/en/debugger/ps2016/get_started.htm

Known Issues and Changes

Not found: libtinfo.so.5

On some systems, using the GNU* GDB version that is provided by Intel fails due to a missing libtinfo.so.5 (e.g. SLES 11 SP3). If a package for libtinfo is not available, the following workaround can be applied:

$ sudo ln -s <path>/libncurses.so.5.6 <path>/libtinfo.so.5

As <path>, use the location of the system's ncurses library.

Safely ending offload debug sessions

To avoid issues like orphan processes or stale debugger windows when ending offload applications, manually end the debugging session before the application is reaching its exit code. The following procedure is recommended for terminating a debug session:
  1. Manually stop a debug session before the application reaches the exit-code.
  2. When stopped, press the red stop button in the tool-bar in the Intel® MIC Architecture-side debugger first. This will end the offloaded part of the application.
  3. Next, do the same for the CPU-side debugger.
  4. The link between the two debuggers will be kept alive. The Intel® MIC Architecture-side debugger will stay connected to the debug agent and the application will remain loaded in the CPU-side debugger, including all breakpoints that have been set.
  5. At this point, both debugger windows can safely be closed.

Intel® MIC Architecture-side debugger asserts on setting source directories

Setting source directories in the GNU* GDB might lead to an assertion.
Resolution:
The assertion should not affect debugger operation. To avoid the assertion anyway, don’t use source directory settings. The debugger will prompt you to browse for files it cannot locate automatically.

Accessing _Cilk_shared variables in the debugger

Writing to a shared variable in an offloaded section from within the CPU-side debugger before the CPU-side debuggee has accessed that variable may result in loss of the written value/might display a wrong value or cause the application to crash.

Consider the following code snippet:

_Cilk_shared bool is_active;
_Cilk_shared my_target_func() {
  //Accessing “is_active” from the debugger *could* lead to unexpected
  // results e.g. a lost write or outdated data is read.
  is_active = true;
  // Accessing "is_active" (read or write) from the debugger at this
  // point is considered safe e.g. correct value is displayed.
}

Debugger and debugged application required to be located on local drive (OS X* only)

In order to use the provided GNU* GDB (gdb-ia), it has to be installed on a local drive. As such, the entire Intel® Parallel Studio XE 2016 package has to be installed locally. Any application that is being debugged needs to be located on a local drive as well. This is a general requirement that’s inherent to GNU GDB with OS X*.
 

Intel® Debugger for Heterogeneous Compute 2016

Features

The version of Intel® Debugger for Heterogeneous Compute 2016 provided as part of Intel® Parallel Studio XE 2016 Composer Edition uses GDB version 7.6. It provides the following features:

  • Debugging applications containing offload enabled code to Intel® Graphics Technology
  • Eclipse* IDE integration

The provided documentation (<install-dir>/documentation_2016/en/debugger/ps2016/get_started.htm) contains more information.

Requirements

For Intel® Debugger for Heterogeneous Compute 2016, the following is required:

  • Hardware
    • A dedicated host system is required as the target system will stop the GPU when debugging. Hence no more visual feedback is possible.
    • Network connection (TCP/IP) between host and target system.
    • 4th generation Intel® Core™ processor or later with Intel® Graphics Technology up to GT3 for the target system.
  • Software

Documentation

The documentation can be found here:
<install-dir>/documentation_2016/en/debugger/gdb-igfx/gdb.pdf<install-dir>/documentation_2016/en/debugger/ps2016/get_started.htm
 

Known Issues and Limitations

No call-stack

There is currently no provision for call-stack display. This will be addressed in future version of the debugger.

Un-interruptible threads

Due to hardware limitations it is not possible to interrupt a running thread. This may cause intermittent side-effects while debugging, where the debugger displays incorrect register and variable value for these threads. It might also show up as displaying SIGTRAP messages when breakpoints get removed while other threads are running.

Evaluation of expressions with side-effects

The debugger does not evaluate expressions that contain assignments which read memory locations before writing to them (e.g. x = x + 1). Please do not use such assignments when evaluating expressions.

 
This section summarizes new features and changes, usage and known issues related to the Intel® Debugger Extension. This debugger extension only supports code targeting Intel® Many Integrated Core Architecture (Intel® MIC Architecture).
 

Features

  • Support for both native Intel® Xeon Phi™ coprocessor applications and host applications with offload extensions
  • Debug multiple Intel® Xeon Phi™ coprocessors at the same time (with offload extension)

Using the Intel® Debugger Extension

The Intel® Debugger Extension is a plug-in for the Microsoft Visual Studio* IDE. It transparently enables debugging of projects defined by  that IDE. Applications for Intel® Xeon Phi™ coprocessors can be either loaded and executed or attached to. This extension supports debugging of offload enabled code, using:
  • Microsoft Visual Studio* 2012
  • Microsoft Visual Studio* 2013
  • Microsoft Visual Studio* 2015

Documentation

The full documentation for the Intel® Debugger Extension can be found here:
<install-dir>\documentation_2016\en\debugger\ps2016\get_started.htm

Known Issues and Limitations

  • Using conditional breakpoints for offload sections might stall the debugger. If aconditional breakpoint is created within an offload section, the debugger might hang when hitting it and evaluating the condition. This is currently analyzed and will be resolved in a future version of the product.
  • Data breakpoints are not yet supported within offload sections.
  • Disassembly window cannot be scrolled outside of 1024 bytes from the starting address within an offload section.
  • Handling of exceptions from the Intel® MIC Architecture application is not supported.
  • Changing breakpoints while the application is running does not work. The changes will appear to be in effect but they are not applied.
  • Starting an Intel® MIC Architecture native application is not supported. You can attach to a currently running application, though.
  • The Thread Window in Microsoft Visual Studio* offers context menu actions to Freeze, Thaw and Rename threads. These context menu actions are not functional when the thread is on an Intel® Xeon Phi™ coprocessor.
  • Setting a breakpoint right before an offload section sets a breakpoint at the first statement of the offload section. This only is true if there is no statement for the host between set breakpoint and offload section. This is normal Microsoft Visual Studio* breakpoint behavior but might become more visible with interweaved code from host and Intel® Xeon Phi™ coprocessor. The superfluous breakpoint for the offload section can be manually disabled (or removed) if desired.
  • Only Intel® 64 applications containing offload sections can be debugged with the Intel® Debugger Extension for Intel® Many Integrated Core Architecture.
  • Stepping out of an offload section does not step back into the host code. It rather continues execution without stopping (unless another event occurs). This is intended behavior.
  • The functionality “Set Next Statement” is not working within an offload section.
  • If breakpoints have been set for an offload section in a project already, starting the debugger might show bound breakpoints without addresses. Those do not have an impact on functionality.
  • For offload sections, setting breakpoints by address or within the Disassembly window won’t work.
  • For offload sections, using breakpoints with the following conditions of hit counts do not work: “break when the hit count is equal to” and “break when the hit count is a multiple of”.
  • The following options in the Disassembly window do not work within offload sections: “Show Line Numbers”, “Show Symbol Names” and “Show Source Code”
  • Evaluating variables declared outside the offload section shows wrong values.
  • Please consult the Output (Debug) window for detailed reporting. It will name unimplemented features (see above) or provide additional information required to configuration problems in a debugging session. You can open the window in Microsoft Visual Studio* via menu Debug->Windows->Output.
  • When debugging an offload-enabled application and a variable assignment is entered in the Immediate Window, the debugger may hang if assignments read memory locations before writing to them (for example, x=x+1). Please do not use the Immediate Window for changing variable values for offload-enabled applications.
  • Depending on the debugger extensions provided by Intel, the behavior (for example, run control) and output (for example, disassembly) could differ from what is experienced with the Microsoft Visual Studio* debugger. This is because of the different debugging technologies implemented by each and should not have a significant impact to the debugging experience.

Attributions

This product includes software developed at:

GDB – The GNU* Project Debugger

Copyright Free Software Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.

This program is free software; you can redistribute it and/or modify it under the terms and conditions of the GNU General Public License, version 2, as published by the Free Software Foundation.

This program is distributed in the hope it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.

GNU* Free Documentation License

Version 1.3, 3 November 2008

 

Copyright © 2000, 2001, 2002, 2007, 2008 Free Software Foundation, Inc. <http://fsf.org/>

 

Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed.

 

0. PREAMBLE

The purpose of this License is to make a manual, textbook, or other functional and useful document "free" in the sense of freedom: to assure everyone the effective freedom to copy and redistribute it, with or without modifying it, either commercially or noncommercially. Secondarily, this License preserves for the author and publisher a way to get credit for their work, while not being considered responsible for modifications made by others.

This License is a kind of "copyleft", which means that derivative works of the document must themselves be free in the same sense. It complements the GNU General Public License, which is a copyleft license designed for free software.

We have designed this License in order to use it for manuals for free software, because free software needs free documentation: a free program should come with manuals providing the same freedoms that the software does. But this License is not limited to software manuals; it can be used for any textual work, regardless of subject matter or whether it is published as a printed book. We recommend this License principally for works whose purpose is instruction or reference.

 

1. APPLICABILITY AND DEFINITIONS

This License applies to any manual or other work, in any medium, that contains a notice placed by the copyright holder saying it can be distributed under the terms of this License. Such a notice grants a world-wide, royalty-free license, unlimited in duration, to use that work under the conditions stated herein. The "Document", below, refers to any such manual or work. Any member of the public is a licensee, and is addressed as "you". You accept the license if you copy, modify or distribute the work in a way requiring permission under copyright law.

A "Modified Version" of the Document means any work containing the Document or a portion of it, either copied verbatim, or with modifications and/or translated into another language.

A "Secondary Section" is a named appendix or a front-matter section of the Document that deals exclusively with the relationship of the publishers or authors of the Document to the Document's overall subject (or to related matters) and contains nothing that could fall directly within that overall subject. (Thus, if the Document is in part a textbook of mathematics, a Secondary Section may not explain any mathematics.) The relationship could be a matter of historical connection with the subject or with related matters, or of legal, commercial, philosophical, ethical or political position regarding them.

The "Invariant Sections" are certain Secondary Sections whose titles are designated, as being those of Invariant Sections, in the notice that says that the Document is released under this License. If a section does not fit the above definition of Secondary then it is not allowed to be designated as Invariant. The Document may contain zero Invariant Sections. If the Document does not identify any Invariant Sections then there are none.

The "Cover Texts" are certain short passages of text that are listed, as Front-Cover Texts or Back-Cover Texts, in the notice that says that the Document is released under this License. A Front-Cover Text may be at most 5 words, and a Back-Cover Text may be at most 25 words.

A "Transparent" copy of the Document means a machine-readable copy, represented in a format whose specification is available to the general public, that is suitable for revising the document straightforwardly with generic text editors or (for images composed of pixels) generic paint programs or (for drawings) some widely available drawing editor, and that is suitable for input to text formatters or for automatic translation to a variety of formats suitable for input to text formatters. A copy made in an otherwise Transparent file format whose markup, or absence of markup, has been arranged to thwart or discourage subsequent modification by readers is not Transparent. An image format is not Transparent if used for any substantial amount of text. A copy that is not "Transparent" is called "Opaque".

Examples of suitable formats for Transparent copies include plain ASCII without markup, Texinfo input format, LaTeX input format, SGML or XML using a publicly available DTD, and standard-conforming simple HTML, PostScript or PDF designed for human modification. Examples of transparent image formats include PNG, XCF and JPG. Opaque formats include proprietary formats that can be read and edited only by proprietary word processors, SGML or XML for which the DTD and/or processing tools are not generally available, and the machine-generated HTML, PostScript or PDF produced by some word processors for output purposes only.

The "Title Page" means, for a printed book, the title page itself, plus such following pages as are needed to hold, legibly, the material this License requires to appear in the title page. For works in formats which do not have any title page as such, "Title Page" means the text near the most prominent appearance of the work's title, preceding the beginning of the body of the text.

The "publisher" means any person or entity that distributes copies of the Document to the public.

A section "Entitled XYZ" means a named subunit of the Document whose title either is precisely XYZ or contains XYZ in parentheses following text that translates XYZ in another language. (Here XYZ stands for a specific section name mentioned below, such as "Acknowledgements", "Dedications", "Endorsements", or "History".) To "Preserve the Title" of such a section when you modify the Document means that it remains a section "Entitled XYZ" according to this definition.

The Document may include Warranty Disclaimers next to the notice which states that this License applies to the Document. These Warranty Disclaimers are considered to be included by reference in this License, but only as regards disclaiming warranties: any other implication that these Warranty Disclaimers may have is void and has no effect on the meaning of this License.

 

2. VERBATIM COPYING

You may copy and distribute the Document in any medium, either commercially or noncommercially, provided that this License, the copyright notices, and the license notice saying this License applies to the Document are reproduced in all copies, and that you add no other conditions whatsoever to those of this License. You may not use technical measures to obstruct or control the reading or further copying of the copies you make or distribute. However, you may accept compensation in exchange for copies. If you distribute a large enough number of copies you must also follow the conditions in section 3.

You may also lend copies, under the same conditions stated above, and you may publicly display copies.

 

3. COPYING IN QUANTITY

If you publish printed copies (or copies in media that commonly have printed covers) of the Document, numbering more than 100, and the Document's license notice requires Cover Texts, you must enclose the copies in covers that carry, clearly and legibly, all these Cover Texts: Front-Cover Texts on the front cover, and Back-Cover Texts on the back cover. Both covers must also clearly and legibly identify you as the publisher of these copies. The front cover must present the full title with all words of the title equally prominent and visible. You may add other material on the covers in addition. Copying with changes limited to the covers, as long as they preserve the title of the Document and satisfy these conditions, can be treated as verbatim copying in other respects.

If the required texts for either cover are too voluminous to fit legibly, you should put the first ones listed (as many as fit reasonably) on the actual cover, and continue the rest onto adjacent pages.

If you publish or distribute Opaque copies of the Document numbering more than 100, you must either include a machine-readable Transparent copy along with each Opaque copy, or state in or with each Opaque copy a computer-network location from which the general network-using public has access to download using public-standard network protocols a complete Transparent copy of the Document, free of added material. If you use the latter option, you must take reasonably prudent steps, when you begin distribution of Opaque copies in quantity, to ensure that this Transparent copy will remain thus accessible at the stated location until at least one year after the last time you distribute an Opaque copy (directly or through your agents or retailers) of that edition to the public.

It is requested, but not required, that you contact the authors of the Document well before redistributing any large number of copies, to give them a chance to provide you with an updated version of the Document.

 

4. MODIFICATIONS

You may copy and distribute a Modified Version of the Document under the conditions of sections 2 and 3 above, provided that you release the Modified Version under precisely this License, with the Modified Version filling the role of the Document, thus licensing distribution and modification of the Modified Version to whoever possesses a copy of it. In addition, you must do these things in the Modified Version:

A. Use in the Title Page (and on the covers, if any) a title distinct from that of the Document, and from those of previous versions (which should, if there were any, be listed in the History section of the Document). You may use the same title as a previous version if the original publisher of that version gives permission.

B. List on the Title Page, as authors, one or more persons or entities responsible for authorship of the modifications in the Modified Version, together with at least five of the principal authors of the Document (all of its principal authors, if it has fewer than five), unless they release you from this requirement.

C. State on the Title page the name of the publisher of the Modified Version, as the publisher.

D. Preserve all the copyright notices of the Document.

E. Add an appropriate copyright notice for your modifications adjacent to the other copyright notices.

F. Include, immediately after the copyright notices, a license notice giving the public permission to use the Modified Version under the terms of this License, in the form shown in the Addendum below.

G. Preserve in that license notice the full lists of Invariant Sections and required Cover Texts given in the Document's license notice.

H. Include an unaltered copy of this License.

I. Preserve the section Entitled "History", Preserve its Title, and add to it an item stating at least the title, year, new authors, and publisher of the Modified Version as given on the Title Page. If there is no section Entitled "History" in the Document, create one stating the title, year, authors, and publisher of the Document as given on its Title Page, then add an item describing the Modified Version as stated in the previous sentence.

J. Preserve the network location, if any, given in the Document for public access to a Transparent copy of the Document, and likewise the network locations given in the Document for previous versions it was based on. These may be placed in the "History" section. You may omit a network location for a work that was published at least four years before the Document itself, or if the original publisher of the version it refers to gives permission.

K. For any section Entitled "Acknowledgements" or "Dedications", Preserve the Title of the section, and preserve in the section all the substance and tone of each of the contributor acknowledgements and/or dedications given therein.

L. Preserve all the Invariant Sections of the Document, unaltered in their text and in their titles. Section numbers or the equivalent are not considered part of the section titles.

M. Delete any section Entitled "Endorsements". Such a section may not be included in the Modified Version.

N. Do not retitle any existing section to be Entitled "Endorsements" or to conflict in title with any Invariant Section.

O. Preserve any Warranty Disclaimers.

If the Modified Version includes new front-matter sections or appendices that qualify as Secondary Sections and contain no material copied from the Document, you may at your option designate some or all of these sections as invariant. To do this, add their titles to the list of Invariant Sections in the Modified Version's license notice. These titles must be distinct from any other section titles.

You may add a section Entitled "Endorsements", provided it contains nothing but endorsements of your Modified Version by various parties—for example, statements of peer review or that the text has been approved by an organization as the authoritative definition of a standard.

You may add a passage of up to five words as a Front-Cover Text, and a passage of up to 25 words as a Back-Cover Text, to the end of the list of Cover Texts in the Modified Version. Only one passage of Front-Cover Text and one of Back-Cover Text may be added by (or through arrangements made by) any one entity. If the Document already includes a cover text for the same cover, previously added by you or by arrangement made by the same entity you are acting on behalf of, you may not add another; but you may replace the old one, on explicit permission from the previous publisher that added the old one.

The author(s) and publisher(s) of the Document do not by this License give permission to use their names for publicity for or to assert or imply endorsement of any Modified Version.

 

5. COMBINING DOCUMENTS

You may combine the Document with other documents released under this License, under the terms defined in section 4 above for modified versions, provided that you include in the combination all of the Invariant Sections of all of the original documents, unmodified, and list them all as Invariant Sections of your combined work in its license notice, and that you preserve all their Warranty Disclaimers.

The combined work need only contain one copy of this License, and multiple identical Invariant Sections may be replaced with a single copy. If there are multiple Invariant Sections with the same name but different contents, make the title of each such section unique by adding at the end of it, in parentheses, the name of the original author or publisher of that section if known, or else a unique number. Make the same adjustment to the section titles in the list of Invariant Sections in the license notice of the combined work.

In the combination, you must combine any sections Entitled "History" in the various original documents, forming one section Entitled "History"; likewise combine any sections Entitled "Acknowledgements", and any sections Entitled "Dedications". You must delete all sections Entitled "Endorsements".

 

6. COLLECTIONS OF DOCUMENTS

You may make a collection consisting of the Document and other documents released under this License, and replace the individual copies of this License in the various documents with a single copy that is included in the collection, provided that you follow the rules of this License for verbatim copying of each of the documents in all other respects.

You may extract a single document from such a collection, and distribute it individually under this License, provided you insert a copy of this License into the extracted document, and follow this License in all other respects regarding verbatim copying of that document.

 

7. AGGREGATION WITH INDEPENDENT WORKS

A compilation of the Document or its derivatives with other separate and independent documents or works, in or on a volume of a storage or distribution medium, is called an "aggregate" if the copyright resulting from the compilation is not used to limit the legal rights of the compilation's users beyond what the individual works permit. When the Document is included in an aggregate, this License does not apply to the other works in the aggregate which are not themselves derivative works of the Document.

If the Cover Text requirement of section 3 is applicable to these copies of the Document, then if the Document is less than one half of the entire aggregate, the Document's Cover Texts may be placed on covers that bracket the Document within the aggregate, or the electronic equivalent of covers if the Document is in electronic form. Otherwise they must appear on printed covers that bracket the whole aggregate.

 

8. TRANSLATION

Translation is considered a kind of modification, so you may distribute translations of the Document under the terms of section 4. Replacing Invariant Sections with translations requires special permission from their copyright holders, but you may include translations of some or all Invariant Sections in addition to the original versions of these Invariant Sections. You may include a translation of this License, and all the license notices in the Document, and any Warranty Disclaimers, provided that you also include the original English version of this License and the original versions of those notices and disclaimers. In case of a disagreement between the translation and the original version of this License or a notice or disclaimer, the original version will prevail.

If a section in the Document is Entitled "Acknowledgements", "Dedications", or "History", the requirement (section 4) to Preserve its Title (section 1) will typically require changing the actual title.

 

9. TERMINATION

You may not copy, modify, sublicense, or distribute the Document except as expressly provided under this License. Any attempt otherwise to copy, modify, sublicense, or distribute it is void, and will automatically terminate your rights under this License.

 

However, if you cease all violation of this License, then your license from a particular copyright holder is reinstated (a) provisionally, unless and until the copyright holder explicitly and finally terminates your license, and (b) permanently, if the copyright holder fails to notify you of the violation by some reasonable means prior to 60 days after the cessation.

Moreover, your license from a particular copyright holder is reinstated permanently if the copyright holder notifies you of the violation by some reasonable means, this is the first time you have received notice of violation of this License (for any work) from that copyright holder, and you cure the violation prior to 30 days after your receipt of the notice.

Termination of your rights under this section does not terminate the licenses of parties who have received copies or rights from you under this License. If your rights have been terminated and not permanently reinstated, receipt of a copy of some or all of the same material does not give you any rights to use it.

 

10. FUTURE REVISIONS OF THIS LICENSE

The Free Software Foundation may publish new, revised versions of the GNU Free Documentation License from time to time. Such new versions will be similar in spirit to the present version, but may differ in detail to address new problems or concerns. See http://www.gnu.org/copyleft/.

Each version of the License is given a distinguishing version number. If the Document specifies that a particular numbered version of this License "or any later version" applies to it, you have the option of following the terms and conditions either of that specified version or of any later version that has been published (not as a draft) by the Free Software Foundation. If the Document does not specify a version number of this License, you may choose any version ever published (not as a draft) by the Free Software Foundation. If the Document specifies that a proxy can decide which future versions of this License can be used, that proxy's public statement of acceptance of a version permanently authorizes you to choose that version for the Document.

 

11. RELICENSING

"Massive Multiauthor Collaboration Site" (or "MMC Site") means any World Wide Web server that publishes copyrightable works and also provides prominent facilities for anybody to edit those works. A public wiki that anybody can edit is an example of such a server. A "Massive Multiauthor Collaboration" (or "MMC") contained in the site means any set of copyrightable works thus published on the MMC site.

"CC-BY-SA" means the Creative Commons Attribution-Share Alike 3.0 license published by Creative Commons Corporation, a not-for-profit corporation with a principal place of business in San Francisco, California, as well as future copyleft versions of that license published by that same organization.

"Incorporate" means to publish or republish a Document, in whole or in part, as part of another Document.

An MMC is "eligible for relicensing" if it is licensed under this License, and if all works that were first published under this License somewhere other than this MMC, and subsequently incorporated in whole or in part into the MMC, (1) had no cover texts or invariant sections, and (2) were thus incorporated prior to November 1, 2008.

The operator of an MMC Site may republish an MMC contained in the site under CC-BY-SA on the same site at any time before August 1, 2009, provided the MMC is eligible for relicensing.

 

Disclaimer and Legal Information

INFORMATION IN THIS DOCUMENT IS PROVIDED IN CONNECTION WITH INTEL PRODUCTS. NO LICENSE, EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE, TO ANY INTELLECTUAL PROPERTY RIGHTS IS GRANTED BY THIS DOCUMENT. EXCEPT AS PROVIDED IN INTEL'S TERMS AND CONDITIONS OF SALE FOR SUCH PRODUCTS, INTEL ASSUMES NO LIABILITY WHATSOEVER, AND INTEL DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY, RELATING TO SALE AND/OR USE OF INTEL PRODUCTS INCLUDING LIABILITY OR WARRANTIES RELATING TO FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABILITY, OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT.
UNLESS OTHERWISE AGREED IN WRITING BY INTEL, THE INTEL PRODUCTS ARE NOT DESIGNED NOR INTENDED FOR ANY APPLICATION IN WHICH THE FAILURE OF THE INTEL PRODUCT COULD CREATE A SITUATION WHERE PERSONAL INJURY OR DEATH MAY OCCUR.
Intel may make changes to specifications and product descriptions at any time, without notice. Designers must not rely on the absence or characteristics of any features or instructions marked "reserved" or "undefined." Intel reserves these for future definition and shall have no responsibility whatsoever for conflicts or incompatibilities arising from future changes to them. The information here is subject to change without notice. Do not finalize a design with this information.
The products described in this document may contain design defects or errors known as errata which may cause the product to deviate from published specifications. Current characterized errata are available on request.
Contact your local Intel sales office or your distributor to obtain the latest specifications and before placing your product order.
Copies of documents which have an order number and are referenced in this document, or other Intel literature, may be obtained by calling 1-800-548-4725, or go to:  http://www.intel.com/design/literature.htm

Intel processor numbers are not a measure of performance. Processor numbers differentiate features within each processor family, not across different processor families. Go to:
http://www.intel.com/products/processor_number/

MPEG-1, MPEG-2, MPEG-4, H.261, H.263, H.264, MP3, DV, VC-1, MJPEG, AC3, AAC, G.711, G.722, G.722.1, G.722.2, AMRWB, Extended AMRWB (AMRWB+), G.167, G.168, G.169, G.723.1, G.726, G.728, G.729, G.729.1, GSM AMR, GSM FR are international standards promoted by ISO, IEC, ITU, ETSI, 3GPP and other organizations. Implementations of these standards, or the standard enabled platforms may require licenses from various entities, including Intel Corporation.

BunnyPeople, Celeron, Celeron Inside, Centrino, Centrino Inside, Cilk, Core Inside, i960, Intel, the Intel logo, Intel AppUp, Intel Atom, Intel Atom Inside, Intel Core, Intel Inside, Intel Inside logo, Intel NetBurst, Intel NetMerge, Intel NetStructure, Intel SingleDriver, Intel SpeedStep, Intel Sponsors of Tomorrow., the Intel Sponsors of Tomorrow. logo, Intel StrataFlash, Intel Viiv, Intel vPro, Intel XScale, InTru, the InTru logo, InTru soundmark, Itanium, Itanium Inside, MCS, MMX, Moblin, Pentium, Pentium Inside, skoool, the skoool logo, Sound Mark, The Journey Inside, vPro Inside, VTune, Xeon, and Xeon Inside are trademarks of Intel Corporation in the U.S. and other countries.

* Other names and brands may be claimed as the property of others.

Microsoft, Windows, Visual Studio, Visual C++, and the Windows logo are trademarks, or registered trademarks of Microsoft Corporation in the United States and/or other countries.

Java is a registered trademark of Oracle and/or its affiliates.

Copyright (C) 2008–2015, Intel Corporation. All rights reserved.

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Software Development Products Case Studies

September 11, 2015, 2:25 pm
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CADEX Resolves the Challenges of CAD Format Conversion

Parallelism brings CAD Exchanger* software dramatic gains in performance and user satisfaction, plus a competitive advantage
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High-Performance Computing Education and Research

Intel developer tools and online courseware enrich the high-performance computing curriculum at Ural Federal University.
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Pexip Speeds Enterprise-Grade Videoconferencing

Pexip, a Norway-based developer of a software-based videoconferencing solutions used Intel® Parallel Studio XE to boost video encoding performance by 2.5 times. This case study covers the issues they were facing, the methodology to identify issues and how they added vectorization into code that matters for better performance.
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Molecular Dynamics Software Optimized for Advanced HPC Computer Architectures

The Walker Molecular Dynamics Laboratory, seeking better performance of its molecular dynamics software, Amber, boosted parallel scalability and built a solid foundation for support of Intel® Xeon Phi™ coprocessor offload acceleration using Intel® VTune™ Amplifier and the latest features in Intel® MPI Library and Intel® Math Kernel Library.
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Boosting Long Term Evolution (LTE) Application Performance with Intel® System Studio

Intel® System Studio presents a wide variety of tools within a single tool chain for signal processing to application processing to obtain great computing performance, short development cycle and product simplification
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Parallelizing Oil and Gas Software with Intel® Software Development Tools

Schlumberger* increases performance for its PIPESIM* software by up to 10 times while streamlining the development process.
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Mentor Graphics Speeds Design Cycles with Intel® Software Tools

Thermal simulations get the performance boost for faster time to market
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AWE’s HPC Research Applications Get Performance Boost with the Intel® Xeon Phi™ Coprocessor

As a cornerstone of nuclear deterrence and national defense in the United Kingdom, AWE is a center of scientific and technological excellence, with some of the most advanced research, design, and production facilities in the world. Precision, performance, and reliability are mission critical capabilities for AWE in its high performance computing research and development.
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Speed Threading Prototyping with Intel® Advisor XE

How are software product companies meeting the challenge of increasing data and the corresponding performance demands? Here, we'll look at one leading design software company whose products are used by design and engineering professionals. The amount of data in customer models that needs to be processed is steadily expanding. Though trying to use parallel computing to improve product performance, the company was struggling to identify areas where multithreading could produce visible gains at reasonable cost—and at the same time, make affected source code thread-safe.
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Cutting-edge software and architecture advance product engineering innovation

Altair Speeds Complex Simulation and Workload Management with the Intel® Xeon Phi™ Coprocessor
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Aerospace Supercomputing Demonstrates the Parallelism Advantage

High Resolution Flow Solver on Unstructured Meshes (HiFUN) Offers Extreme Scalable Performance
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Delivering High-Speed Supercomputer Services

Kyoto University builds a 1,202-socket cluster supercomputer to deliver advanced information services to research institutes throughout Japan using the Intel® Xeon® processor E5 family.
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Mike Fricker from Epic Games Talks about Intel® VTune™ Amplifier

Mike Fricker, lead tool editor for Epic Games, responsible for Unreal Editor talks about use of Intel® VTune™ Amplifier. Mike describes how VTune Amplifier’s hotspot profiler has helped optimize the Unreal Editor. For more information on the Unreal Engine, see unrealengine.com.
Watch the video
For more information on VTune Amplifier, see http://software.intel.com/en-us/articles/intel-vtune-amplifier-xe/.

HPC Study: Biophysicists and Mathematicians

Learn how a group of research scientists in Russia parallelized their applications using Intel® Parallel Advisor in response to the growing data from biological experiences and increasing complexity of simulation requirements.
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NEC Corporation's Superresolution program is powered by

Intel® Software Development Tools
Development of Superresolution Program to Run on x86 Server Fitted with Intel® Xeon Phi™ Coprocessor
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Flow Science Enables Faster, More Accurate Simulation with Intel® Software Development Tools

Delivering improved results even as customer data sets grow larger
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Altair and Intel Help Engineers to Analyze Complex Designs, Faster (Altair)

Sophisticated simulation software breaks through performance barriers
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USC Students Use Intel® Game Development Tools to Increase Game Performance

Boosting performance, higher frame rates, and a reduction in input lag.
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Intel® Parallel Studio XE Adopted as Development Platform for High-speed Renderer (Fixstars®)

As a developer of services that use multi-core processors, Fixstars® has selected Intel® Parallel Studio XE as the development platform for its lucille* high-speed renderer
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Virtual Population Growth

Driving Innovation in Crowd Simulation.
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From Overtime to Real Time (Geometrics)

Intel® Technology Helps Geomerics Remove Bakeware from the Runtime.
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A Very Good Kitty Indeed (Dreamworks)

DreamWorks Animation's Puss in Boots Uses Intel® Math Kernel Library to Help Create Dazzling Special Effects.
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Altair advances frontal crash simulation with help from Intel® Software Development products.

Creating a new standard in virtual crash testing.
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Nik Software Increases Rendering Speed of HDR by 1.3x

By optimizing its software for Advanced Vector Extensions (AVX), Nik Software used Intel® Parallel Studio XE to identify hotspots 10x faster, and enable end users to render high dynamic range (HDR) imagery 1.3x faster.
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ESI Group* Achieves Up to 450 Percent Faster Performance on Quad-Core Processors

By optimizing its noise and vibration simulation software for a quad-core Intel® Xeon® processor, ESI Group used Intel® Parallel Amplifier to identify hotspots, improving overall performance by more than 400 percent on certain problems when compared with the previous performance on a single-core processor.
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Massachusetts General Hospital* Achieves 20X Faster Colonoscopy Screening Processing Time

Massachusetts General Hospital (MGH) 3D Imaging Research*, working with Intel, Microsoft*, and Vectorform*, used Intel® Parallel Studio 2011 to optimize key image processing libraries, reducing the compute-intensive colon-screening processing time from 60 minutes to 3 minutes.
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SIMULIA turns to Intel® Parallel Studio to enable easier model construction and boost engineering efficiencies

SIMULIA's realistic simulation solutions are designed to deliver significant business value when applied as an integral part of overall design, engineering, and research processes, helping accelerate the delivery of innovative, high-quality products to market. Use of Intel Parallel Studio contributed to better engineering efficiency and effectiveness, which in turn led to improved customer satisfaction. SIMULIA has achieved realistic simulations, more accurate representations of real physics, easier model construction, and faster results.
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Envivio* Brings Video Encoding Innovation to Multicore with Intel® Parallel Studio

As the only company to offer convergence solutions supporting the "three screens" of video (TVs, PCs, and mobile phones), Envivio makes IP video a reality over any type of network and to any multimedia device from mobile to HD. Creating IP video convergence encoding solutions for telcos and broadcasters in an industry where performance expectations are high, the innovative Envivio knows the difference the right software tools can make. Faced with challenges encoding HD video on single core platforms, Intel® Parallel Studio parallelism tools for Windows* is a natural fit.
Learn more

Open CASCADE* Gives Customers Greater Performance with Intel® Parallel Studio

Open CASCADE develops solutions for integrating complex software simulation tools for its clients in the science and technical computing industry. High performance of applications is very important for Open CASCADE and its clients because of the complexity of the tasks under investigation. The flexibility of Intel® Parallel Studio, its advanced error checking and tuning capabilities, and its C++ development environment, make it a valuable addition to Open CASCADE's software tools.
Learn more

RADVISION* leverages Intel® Parallel Studio to dramatically accelerate the performance of IP-based applications on multicore platforms

RADVISION* is the industry's leading provider of products and technologies for unified visual communications over IP and 3G networks. Their award-winning SIP Toolkit (Session Initiation Protocol) is a powerful and highly versatile set of tools that dramatically accelerates development time of SIP applications. The SIP Toolkit provides developers the ability to implement any type of application, including clients, servers, testing tools, and more. RADVISION found a gap beyond the causes of IPCs and synchronizations, prompting an inspection of the code to see where it spends time and why. They used Intel® Parallel Studio along with Intel® VTune™ Performance Analyzer with Intel® Thread Profiler for Windows* and Intel® Thread Checker to get a clear view of which process was waiting and why. It also acquired detailed information regarding the time the code spent in various sections, down to the exact location that needed to be investigated. Integration with the Microsoft Visual Studio IDE* also had a positive impact on the code analysis.
Learn more

RWTH Aachen University* adopts Intel® Parallel Studio to help developers more quickly move forward with multicore applications

RWTH Aachen University, one of Germany's foremost technical universities, operates some of the largest high performance computing (HPC) clusters in Europe. Offering both compute and consultative resources to the greater European community of universities and research labs, Aachen's technical staff has become a hub for parallelism. Its Center for Computing and Communication helps ease this transition with consulting and hands-on assistance for clients that include mechanical engineers writing their own code and conducting detailed analysis. Aachen wanted to move clients from Linux* to Windows* to maximize the benefit of all the cluster processor cores. The university also wanted to help clients develop applications based on a proper parallelization strategy, while addressing the many complex issues related to porting and parallelization. Aachen used Intel Parallel Studio throughout the development life cycle, from runtime analysis and serial tuning, to finding hotspots, debugging, and correctness checking. With Intel Parallel Studio, the Visual Studio environment is extended to make it easier to develop parallel applications, even by those new to parallelism, providing the foundation for applications that can get the most performance on multicore platforms.
Learn more

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Intel® XDK FAQs - Crosswalk

September 11, 2015, 2:44 pm
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Q1: How do I play audio with different playback rates?

Here is a code snippet that allows you to specify playback rate:

var myAudio = new Audio('/path/to/audio.mp3');
myAudio.play();
myAudio.playbackRate = 1.5;
Q2: Why are Intel XDKs Android build files so large?

If your app has been built with Crosswalk, it will be a minimum of 15-18MB in size because it includes a complete web browser to use instead of the built-in webview on the device. Despite the size, this is the preferred solution for Android, because the built-in webviews on the majority of Android devices are inconsistent.

When using the "Legacy" build option, changing the code base from "gold" to "lean" will reduce the size of your APK, but the "lean” option also excludes the Cordova 2.9 library components (among other elements). Investing time and effort in the legacy build system is not recommended as it has been deprecated and will be obsolete sometime during 2015. The legacy build system also cannot take advantage of the numerous Cordova plugins that are available for use with the Cordova and Crosswalk build systems.

Q3: Why does my Android Crosswalk build fail with the com.google.playservices plugin? [Plugin]

The Intel XDK Crosswalk build system does not support the library project format that was introduced in the com.google.playservices@21.0.0 plugin. Use "com.google.playservices@19.0.0" instead.

Q4: Why is the size of my installed app much larger than the apk for a Crosswalk application?

This is because the apk is a compressed image, so when installed it occupies more space due to being decompressed. Also, when your Crosswalk app starts running on your device it will create some data files for caching purposes which will increase the installed size of the application.

Q5: Why does my app fail to run on some devices?

There are some Android devices in which the GPU hardware/software subsystem does not work properly. This is typically due to poor design or improper validation by the manufacturer of that Android device. Your problem Android device probably falls under this category.

Note that each iteration of the Crosswalk system is based on more recent versions of the Chromium project. Each new version of the Chromium project has become more "agressive" with regard to its use of the GPU subsystem on Android devices. Our experience has been that the Crosswalk 7 build is the least aggressive regarding the use of the GPU subsystem and generally runs on the widest array of Android devices. If you desire maximum compatibility, you should use the Crosswalk 7 build option.

Q6: How to I stop the "pull to refresh" from resetting and restarting my Crosswalk app?

See the code posted in this forum thread for a solution: https://software.intel.com/en-us/forums/topic/557191#comment-1827376.

Q7: Which versions of Crosswalk are supported and why do you not support version X, Y or Z?

The specific versions of Crosswalk that are offered via the Intel XDK are based on what the Crosswalk project releases and the timing of those releases relative to Intel XDK build system updates. This is one of the reasons you do not see every version of Crosswalk supported by our Android-Crosswalk build system.

With the September, 2015 release of the Intel XDK, the method used to build embedded Android-Crosswalk versions changed to the "pluggable" webview Cordova build system. This new build system was implemented with the help of the Cordova project and became available with their release of the Android Cordova 4.0 framework (coincident with their Cordova CLI 5 release). With this change to the Android Cordova framework and the Cordova CLI build system, we can now more quickly adapt to new version releases of the Crosswalk project. Support for previous Crosswalk releases required updating a special build system that was forked from the Cordova Android project. This new "pluggable" webview build system means that the build system can now use the standard Cordova build system, because it now includes the Crosswalk library as a "pluggable" component.

The "old" method of building Android-Crosswalk APKs relied on a "forked" version of the Cordova Android framework, and is based on the Cordova Android 3.6.3 framework and is used when you select CLI 4.1.2 in the Project tab's build settings page. Only Crosswalk versions 7, 10, 11, 12 and 14 are supported by the Intel XDK when using this build setting.

Selecting CLI 5.1.1 in the build settings will generate a "pluggable" webview built app. A "pluggable" webview app (built with CLI 5.1.1) results in an app built with the Cordova Android 4.1.0 framework. Obviously, future releases of the Intel XDK and the build system may support higher versions of Cordova CLI and the Cordova Android framework.

In both cases, above, the net result will still be two processor architecture-specific APKs: one for use on an x86 device and one for use on an ARM device. The version codes of those APKs are modified to insure that both can be uploaded to the Android store under the same app name so that the appropriate APK is automatically delivered to the matching device (i.e., the x86 APK is delivered to Intel-based Android devices and the ARM APK is delivered to ARM-based Android devices).

For more information regarding Crosswalk and the Intel XDK, please review these documents:

Back to FAQs Main

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Intel® Parallel Studio XE 2015 Update 5 Composer Edition for C++ Windows*

September 16, 2015, 9:24 am
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Intel® Parallel Studio XE 2015 Update 5 Composer Edition for C++ Windows* includes the latest Intel C/C++ compilers and performance libraries for IA-32 and Intel® 64 architecture systems. This new product release now includes: Intel® C++ Compiler XE Version 15.0.4, Intel® Math Kernel Library (Intel® MKL) Version 11.2 Update 4, Intel® Integrated Performance Primitives (Intel® IPP) Version 8.2 Update 3, Intel® Threading Building Blocks (Intel® TBB) Version 4.3 Update 7, Intel® Debugger Extension for Intel® Many Integrated Core Architecture (Intel® MIC Architecture) Version 7.7-8.0

New in this release:

Note:  For more information on the changes listed above, please read the individual component release notes. See the previous releases's ReadMe to see what was new in that release.

Resources

Contents
File: w_ccompxe_online_2015.5.280.exe
Online installer

File: w_ccompxe_2015.5.280.exe
Product for developing 32-bit and 64-bit applications

File:  w_ccompxe_redist_msi_2015.5.280.zip
Redistributable Libraries for 32-bit and 64-bit msi files

File:  get-ipp-8.2-crypto-library.htm
Cryptography Library

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Intel® Parallel Studio XE 2015 Update 5 Composer Edition for Fortran Windows*

September 16, 2015, 10:10 am
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Intel® Parallel Studio XE 2015 Update 5 Composer Edition for Fortran Windows* includes the latest Intel Fortran compilers and performance libraries for IA-32 and Intel® 64 architecture systems. This new product release now includes: Intel® Visual Fortran Compiler XE Version 15.0.4, Intel® Math Kernel Library (Intel® MKL) Version 11.2 Update 4, Intel® Debugger Extension for Intel® Many Integrated Core Architecture (Intel® MIC Architecture) Version 7.7-8.0, Microsoft Visual Studio 2010 Shell and Libraries*

New in this release:

Note:  For more information on the changes listed above, please read the individual component release notes. See the previous releases's ReadMe to see what was new in that release.

Resources

Contents
File:  w_fcompxe_online_2015.5.280.exe
Online installer

File:  w_fcompxe_2015.5.280.exe
Product for developing 32-bit and 64-bit applications (with Microsoft Visual Studio 2010 Shell & Libraries*, English version)

File:  w_fcompxe_all_jp_2015.5.280.exe
Product for developing 32-bit and 64-bit applications (with Microsoft Visual Studio 2010 Shell & Libraries*, Japanese version)

File:  w_fcompxe_redist_msi_2015.5.280.zip
Redistributable Libraries for 32-bit and 64-bit msi files

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Search

Intel® Parallel Studio XE 2015 Update 5 Composer Edition for Windows*

September 16, 2015, 10:22 am
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Intel® Parallel Studio XE 2015 Update 5 Composer Edition for Windows* includes Intel's latest Fortran and C/C++ compilers and performance libraries for IA-32 and Intel® 64 architecture systems. This new product release now includes: Intel® Visual Fortran Compiler XE Version 15.0.4, Intel® C++ Compiler XE Version 15.0.4, Intel® Math Kernel Library (Intel® MKL) Version 11.2 Update 4, Intel® Integrated Performance Primitives (Intel® IPP) Version 8.2 Update 3, Intel® Threading Building Blocks (Intel® TBB) Version 4.3 Update 7, Intel® Debugger Extension for Intel® Many Integrated Core Architecture (Intel® MIC Architecture) Version 7.7-8.0

New in this release:

Note:  For more information on the changes listed above, please read the individual component release notes. See the previous releases's ReadMe to see what was new in that release.

Resources

Contents
File: w_compxe_online_2015.5.280.exe
Online installer

File: w_compxe_2015.5.280.exe
Product for developing 32-bit and 64-bit applications (with Microsoft Visual Studio 2010 Shell & Libraries*, English version)

File: w_compxe_all_jp_2015.5.280.exe
Product for developing 32-bit and 64-bit applications (with Microsoft Visual Studio 2010 Shell & Libraries*, Japanese version)

File:  w_ccompxe_redist_msi_2015.5.280.zip
C++ Redistributable Libraries for 32-bit and 64-bit msi files

File:  w_fcompxe_redist_msi_2015.5.280.zip
Fortran Redistributable Libraries for 32-bit and 64-bit msi files

File:  get-ipp-8.2-crypto-library.htm
Cryptography Library

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Intel® Math Kernel Library (Intel® MKL) 11.2 Update 4 for Linux*

September 17, 2015, 4:16 pm
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Intel® Math Kernel Library (Intel® MKL) is a highly optimized, extensively threaded, and thread-safe library of mathematical functions for engineering, scientific, and financial applications that require maximum performance. Intel MKL 11.2 Update 4 packages are now ready for download. Intel MKL is available as part of the Intel® Parallel Studio XE 2015 and Intel® System Studio 2015 . Please visit the Intel® Math Kernel Library Product Page .

Intel® MKL 11.2 Update 4 Bug fixes

New Features in MKL 11.2 Update 4:

  • Reduced memory consumption when using Intel MKL in GNU OMP parallel regions
  • BLAS
    • Improved parallel and serial performance of ?TRSM on Intel® Advanced Vector Extensions 2 (Intel® AVX2) for the 64-bit Intel MKL
    • Improved serial performance of STRMM for small triangular matrix (dimension less than or equal to 10) on Intel® AVX2 for 64-bit Intel MKL
    • Improved ?SYRK/?HERK/?SYR2K/?HER2K performance for beta=0 on Intel® Advanced Vector Extensions 2 (Intel® AVX2) for the 64-bit Intel MKL
    • Improved performance of BLAS level 3 functions for second generation of Intel Xeon Phi coprocessors

Check out the Release Notes

Contents

  • File:  l_mkl_online_11.2.4.223.sh

    Online Installer for Linux

  • File: l_mkl_11.2.4.223.tgz

    A File containing the complete product installation for Linux (32-bit/x86-64bit development)

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↧

Intel® Math Kernel Library (Intel® MKL) 11.2 Update 4 for Windows*

September 17, 2015, 4:21 pm
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Intel® Math Kernel Library (Intel® MKL) is a highly optimized, extensively threaded, and thread-safe library of mathematical functions for engineering, scientific, and financial applications that require maximum performance. Intel MKL 11.2 Update 4 packages are now ready for download. Intel MKL is available as part of the Intel® Parallel Studio XE 2015 and Intel® System Studio 2015 . Please visit the Intel® Math Kernel Library Product Page .

Intel® MKL 11.2 Update 4 Bug fixes

New Features in MKL 11.2 Update 4:

  • Reduced memory consumption when using Intel MKL in GNU OMP parallel regions
  • BLAS
    • Improved parallel and serial performance of ?TRSM on Intel® Advanced Vector Extensions 2 (Intel® AVX2) for the 64-bit Intel MKL
    • Improved serial performance of STRMM for small triangular matrix (dimension less than or equal to 10) on Intel® AVX2 for 64-bit Intel MKL
    • Improved ?SYRK/?HERK/?SYR2K/?HER2K performance for beta=0 on Intel® Advanced Vector Extensions 2 (Intel® AVX2) for the 64-bit Intel MKL
    • Improved performance of BLAS level 3 functions for second generation of Intel Xeon Phi coprocessors

Check out the Release Notes

Contents

  • File:  w_mkl_11.2.4.280_online.exe

    Online Installer for Windows

  • File: w_mkl_11.2.4.280.exe

    A File containing the complete product installation for Windows (32-bit/x86-64bit development)

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A Brief Survey of NUMA (Non-Uniform Memory Architecture) Literature

September 17, 2015, 5:06 pm
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This document presents a list of articles on NUMA (Non-uniform Memory Architecture) that the author considers particularly useful. The document is divided into categories corresponding to the type of article being referenced. Often the referenced article could have been placed in more than one category. In this situation, the reference to the article is placed in what the author thinks is the most relevant category. These articles were obtained from the Internet and, though every attempt was made to identify useful and informative material, Intel does not provide any guarantees as to the veracity of the material. It is expected that the reader will use their own experience and knowledge to challenge and confirm the material in these references.

Where beneficial, some comments (indented and in italics) as to the usefulness and content of an article is included.

Contents

INTRODUCTORY AND OVERVIEW

FUNDAMENTAL

HISTORICAL

OPERATING SYSTEMS

TOOLS

CHARACTERIZATION AND OPTIMIZATION

CASE STUDIES

 

INTRODUCTORY AND OVERVIEW

Lameter, Christoph. (August 2013). NUMA (Non-Uniform Memory Access): An Overview, ACM Queue, Vol. 11, no. 7. Retrieved on September 1st, 2015 from http://queue.acm.org/detail.cfm?id=2513149.

Comment: Linux focused with a moderate list of references.

Panourgias, Iakovos. (September 9th, 2011). NUMA effects on multicore, multi socket systems, MSc Thesis, University of Edinburgh. Retrieved on September 1st, 2015 from http://static.ph.ed.ac.uk/dissertations/hpc-msc/2010-2011/IakovosPanourgias.pdf.

Comment: HPC benchmark focused; discussed from a programming perspective (vs an OS administrative); comprehensive.

Non-uniform memory access, Wikipedia. Retrieved September 1st, 2015 from https://en.wikipedia.org/wiki/Non-uniform_memory_access.

Comment: Good set of references.

Manchanda, Nakul, and Karan Anand. (May 5th, 2010). "Non-Uniform Memory Access (NUMA)", Class thesis. New York University. Retrieved on September 1st, 2015 from http://cs.nyu.edu/~lerner/spring10/projects/NUMA.pdf.

Yatendra Sharma. (February 10th, 2014). NUMA (Non-Uniform Memory Access): An Overview, Blog. Retrieved on September 1st, 2015 from http://yattutime.blogspot.com/2014/02/numa-non-uniform-memory-access-overview.html.

FUNDAMENTAL

Müller, Daniel. (9th December, 2013). Memory and Thread Management on NUMA Systems, Diploma Thesis, Technische Universität Dresden. Retrieved on September 1st, 2015 from http://os.inf.tu-dresden.de/papers_ps/danielmueller-diplom.pdf.

Comment: Comprehensive and more technical.

Denneman, Frank. (February 27th, 2015). Memory Deep Dive: NUMA and Data Locality, Blog. Retrieved on September 1st, 2015 from http://frankdenneman.nl/2015/02/27/memory-deep-dive-numa-data-locality.

Comment: Part of a larger series on memory systems.

HISTORICAL

Bolosky, William J., Robert P. Fitzgerald, Michael L. Scott. (1989). Simple But Effective Techniques for NUMA Memory Management, ACM SIGOPS Oper. Syst. Rev., Vol. 23, No. 5, pp. 19-31. Retrieved on September 1st, 2015, from http://www.cs.berkeley.edu/~prabal/resources/osprelim/BFS89.pdf.

Comment: Seminal paper.

OPERATING SYSTEMS

Linux Operating System. (August 8, 2012). NUMA(7) Manpage. Retrieved on September 1st, 2015 from http://man7.org/linux/man-pages/man7/numa.7.html.

Drepper, Ulrich. (October 17th, 2007). Memory part 4: NUMA support, LWN.net. Retrieved on September 1st, 2015 from http://lwn.net/Articles/254445.

Comment: LWN is Linux focused.

Sourceforge. (November 20th, 2002). Linux Support for NUMA Hardware. Retrieved on September 1st, 2015 from http://lse.sourceforge.net/numa.

Microsoft Corporation. NUMA Support (Windows), Windows Dev Center. Retrieved on September 1st, 2015 from https://msdn.microsoft.com/en-us/library/windows/desktop/aa363804(v=vs.85).aspx.

Comment: Programming focused with API support.

TOOLS

McCurdy, Collin, and Jeffrey Vetter, (March 2010). Memphis: Finding and Fixing NUMA-related Performance Problems on Multi-core Platforms, ISPASS-2010: 2010 IEEE International Symposium on Performance Analysis of Systems and Software, March 28-30, 2010, White Plains, NY.

Levinthal, David. Performance Analysis Guide for Intel® Core™ i7 Processor and Intel® Xeon™ 5500 processors , v1.0, Intel Developer Zone. Retrieved on September 1st, 2015 from https://software.intel.com/sites/products/collateral/hpc/vtune/performance_analysis_guide.pdf.

Comment: Use of VTune to look at NUMA.

Lachaize, Renaud, Baptiste Lepers, and Vivien Quéma. (June 2012), MemProf: a Memory Profiler for NUMA Multicore Systems, 2012 USENIX Annual Technical Conference, June 13-15, 2012, Boston, MA.

Zickus, Don. (May 31st, 2013). Dive deeper in NUMA systems, Red Hat Developer Blog. Retrieved on September 1st, 2015 from http://developerblog.redhat.com/2013/05/31/dive-deeper-in-numa-systems.

Intel Corporation (March 1st, 2010). Detecting Memory Bandwidth Saturation in Threaded Applications, Intel Developer Zone. Retrieved on September 1st, 2015 from https://software.intel.com/en-us/articles/detecting-memory-bandwidth-saturation-in-threaded-applications/.

CHARACTERIZATION AND OPTIMIZATION

Ott, David. (November 2nd, 2011). Optimizing Applications for NUMA, Intel Developer Zone. Retrieved September 1st, 2015 from https://software.intel.com/en-us/articles/optimizing-applications-for-numa.

Comment: There is a considerably older version of this article (2004) that is still accessible.

Hently, David. (June 2012). Multicore Memory Caching Issues – NUMA. Series from Channel Cscsch, Centro Svizzero di Calcolo Scientifico. Presented at the PRACE Summer School 21-23 June 2012 - Summer School on Code Optimisation for Multi-Core and Intel MIC Architectures at the Swiss National Supercomputing Centre in Lugano, Switzerland. Video retrieved on September 1st, 2015 from https://www.youtube.com/watch?v=_cmViSD6Quw&index=17&list=PLAUXS_xuCc_rjvp-lJliGFtBPWpKNAY-y.

Mario, Joe and Don Zickus. (August 2013). NUMA - Verifying it's not hurting your application performance, Redhat Developer Exchange, August 27, 2013, Boston, MA, USA. Retrieved September 1st, 2015 from http://developerblog.redhat.com/2013/08/27/numa-hurt-app-perf/.

CASE STUDIES

Leis, Viktor, Peter Boncz, Alfons Kemper and Thomas Neumann. (June 2014). Morsel-Driven Parallelism: A NUMA-Aware Query, Evaluation Framework for the Many-Core Age, SIGMOD’14, June 22–27, 2014, Snowbird, UT, USA. Retrieved September 1st, 2015 from http://www-db.in.tum.de/~leis/papers/morsels.pdf.

Li, Yinan, Ippokratis Pandis Rene Mueller, Vijayshankar Raman and Guy Lohman. (January 2013). NUMA-aware algorithms: the case of data shuffling, 6th Biennial Conference on Innovative Data Systems Research (CIDR’13), January 6-9, 2013, Asilomar, California, USA. Retrieved September 1st, 2015 from http://www.cidrdb.org/cidr2013/Papers/CIDR13_Paper121.pdf.

 

 

 

Author

face

Taylor Kidd is an engineer and frequent contributor to the Intel Developer Zone. He currently works on the Intel® Xeon Phi™ Scale Engineering Team producing developer facing content, and answering a variety of developer questions. Taylor has worked in a variety of fields in the past, including HPC, embedded systems, research and teaching.

 

 

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Finite Differences on Heterogeneous Distributed Systems

September 18, 2015, 11:32 am
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Download Zip Source Code

Here we exemplify how to expand Finite Difference (FD) computational kernels to run on distributed systems. Additionally, we describe a technique that shows how to deal with the load imbalance of heterogeneous distributed systems where different nodes or compute devices may provide distinct compute speeds. A sample source code is provided to exemplify our implementation.

Our building block is the FD compute kernels that are typically used for RTM (reverse time migration) algorithms for seismic imaging. The computations performed by the ISO-3DFD (Isotropic 3-dimensional finite difference) stencils play a major role in accurate imaging of complex subsurface structures in oil and gas surveys and exploration. Here we leverage the ISO-3DFD discussed in [1] and [2] and illustrate a simple MPI-based distributed implementation that enables a distributed ISO-3DFD compute kernel to run on a hybrid hardware configuration consisting of host Intel® Xeon® processors and attached Intel® Xeon Phi™ coprocessors. We also explore Intel® software tools that help to analyze the load balance to improve performance and scalability.

The Distributed ISO-3DFD

Our illustrative case is a 1D decomposition of the ISO-3DFD compute stencil. We set up a computational domain that is split across MPI processes. For this example, we set up one MPI process per compute device (an Intel Xeon processor or an Intel Xeon Phi coprocessor). This implementation includes the halo exchanges required between MPI processes, that is, between processors and coprocessors. When domain decomposition is applied to an FD stencil as described in [1, 2], it is necessary to implement halo exchanges between subdomains at each time-step of the algorithm. This is because the value updates at domain points close to a border of the subdomain require values computed on an adjacent subdomain:

for(int k=1; k<=HL; k++)    //Stencil Half-Length HL
          u_0 += W[k]*(
            U0(ix+k,iy  ,iz  ) + U0(ix-k,iy  ,iz  ) +
            U0(ix  ,iy+k,iz  ) + U0(ix  ,iy-k,iz  ) +
            U0(ix  ,iy  ,iz+k) + U0(ix  ,iy  ,iz-k));

The order of the 3D stencil is defined by its half-length (HL) value: a stencil of 8th order has a half-length HL=8/2=4, for example. The “width” of the halos to be swapped between adjacent subdomains is also equal to HL.

This sample code uses a symmetric execution model: the code runs on host processors and coprocessors. This can be accomplished via fully symmetric MPI execution with distinct processes running on Intel Xeon processors and on Intel Xeon Phi coprocessors. For example, assume a single two-socket system named hostname1 with two Intel Xeon Phi coprocessor cards (named hostname1-mic0, and hostname1-mic1) attached to the system’s x16 PCIe* slots. Also assume two executable binaries rtm.cpu (complied for the processor architecture, such as Intel® Advanced Vector Extensions 2 (Intel® AVX2), and rtm.phi (compiled for the architecture of the Intel Xeon Phi coprocessor). Using the Intel® MPI Library, one can leverage both executables in a MPI+OpenMP* symmetric mode execution:

mpirun \
-n 1 -host  hostname1  -env I_MPI_PIN_DOMAIN=socket  -env OMP_NUM_THREADS=14 ./rtm.cpu : \
-n 1 -host  hostname1  -env I_MPI_PIN_DOMAIN=socket  -env OMP_NUM_THREADS=14 ./rtm.cpu : \
-n 1 -host  hostname1-mic0 –env OMP_NUM_THREADS=244 ./rtm.phi  : \
-n 1 -host  hostname1-mic1 –env OMP_NUM_THREADS=244 ./rtm.phi

The simplified single node example above assumes that both rtm.cpu and rtm.phi are parallelized via OpenMP threading as described in [1, 2]. MPI is used for data exchanges and synchronization between nodes, processors, and coprocessors. OpenMP is used to divide MPI process compute work through the cores of a given processor or coprocessor. The above example can also be expanded for multiple nodes with processors and coprocessors. See [3] for more details on MPI symmetric mode execution.

The simplified MPI harness presented here: 1) assumes that each Intel Xeon Phi coprocessor behaves like an independent compute node—no offloading programming syntax is used, and 2) allows asynchronous halo exchanges via non-blocking MPI calls. The overlapping of the compute and halo exchange with adjacent subdomains is accomplished by considering two types of compute regions on each subdomain:

  1. Local compute: Points with distance > HL from the adjacent borders. That is, points where the stencil computation relies only on values previously computed in the same subdomain.
  2. Halo compute: Points with distance <= HL from the adjacent borders. That is, points where the stencil computation relies only on values previously computed in the same subdomain.

Schematically we have:

The MPI implementation is in the style of a straightforward nearest-neighbor halo swap. First, buffers BufferPrev and BufferNext are used to post asynchronous receives for the halos needed from the neighbor subdomains:

Next, points in the Halo compute region are updated first, because these will be needed by the adjacent subdomains:

Updated values in the halo compute region are sent asynchronously to the adjacent domains: 

As the asynchronous halo exchange happens, the points in the local compute region can be updated because these computations do not depend on values from adjacent subdomains:

An MPI_Waitall synchronization call is then used to check for completion of the asynchronous halo exchanges. Finally, the values received in transfer buffers BufferPrev and BufferNext are copied to the subdomain:

The actual implementation can be found in the sample source code package attached to this article. It contains an MPI layer running on top of the ISO-3DFD code previously published in [1, 2]. Each MPI process can be tuned for performance either via hardware settings such as turbo mode, hyperthreading, and ECC mode (Intel Xeon Phi coprocessor) or tuned through software optimization and tuning such as cache blocking, thread affinitization, and data prefetching distances. Refer to the original articles for details on single process optimization and tuning.

Workload Balancing

Workload balancing is a critical part of heterogeneous systems. The distributed ISO-3DFD exemplified here has tuning parameters that permit statically balancing the amount of computation work assigned to processor sockets and Intel Xeon Phi coprocessors. It is accomplished by two command-line parameters accepted by the executables:
factor_speed_phi: Integer value representing how fast the FD code can run on the Intel Xeon Phi coprocessor.
factor_speed_xeon: Integer value representing how fast the FD code can run on the Intel Xeon processor.

The work-balance coefficient is the ratio factor_speed_phi / factor_speed_xeon that can be used to define how much work is assigned to an Intel Xeon processor and how much to an Intel Xeon Phi coprocessor. The balance between an Intel Xeon processor and an Intel Xeon Phi coprocessor can be defined at MPI launch time, allowing flexibility to support distinct Intel Xeon processors and Intel Xeon Phi coprocessor models.

The static load balancing can be easily obtained with the help of an MPI message-profiling tool. Here we use Intel® Trace Analyzer and Collector (ITAC) [4] as the message-profiling tool. One way to accomplish this is by collecting an MPI trace and analyzing the load balance:

  1. Before running the experiment, source ITAC to the runtime environment:
    . /opt/intel/itac_latest/bin/itacvars.sh
  2. Run the MPI job with the option “-t” added to the mpirun command. This causes the Intel® MPI Library runtime to collect MPI message traces that are saved on files with extensions *.stf and *.prot.
  3. To visualize the results, use the ITAC GUI by launching the application traceanalyzer:
    Select open to access the *.stf file, and then select Continue to skip the Summary Page.
  4. In the next window, select  Charts -> Event Timeline, and then use the mouse to zoom in to the time line to be better able to visualize the communication pattern between processors and coprocessors.

The following figures show an example of load balancing on a system with two processor sockets (MPI processes P2 and P3) and four Intel Xeon Phi coprocessors (MPI processes P0, P1, P4 and P5). Each MPI process is represented by a horizontal bar in the time-line graph. The time region marked in red represents the process potentially blocked by communication/synchronization; the time region marked in blue represents computing without communication. The goal of static load balancing is to minimize or eliminate the red regions, demonstrating good balance and processor unit utilization.

For this synthetic example, the experiments are run on a dual-socket system with two Intel® Xeon® processor E5-2697 v2 and 64 GB of DDR3-1866 MHz, populated with four Intel® Xeon Phi™ coprocessor 7120 PCIe x16, each with 61 cores at 1.3 GHz, and 16 GB DDR5. We consider three sets of values for the pair factor_speed_phi and factor_speed_xeon. For the first case we set factor_speed_phi=10 and factor_speed_xeon=5, representing the assumption of ratio 10/5= 2 where one Intel Xeon Phi coprocessor computes 2x faster than one single processor socket. Assume the MPI tracing of the experiment resulted in:

The above event time line suggests that processors (MPI process ranks P2 and P3) took longer to complete their work and the coprocessors (P0, P1, P4, and P5) were blocked idle (red regions) waiting for the work to be completed on the processors. In the second case we set factor_speed_phi=15 and factor_speed_xeon=5, representing the assumption of ratio 15/5= 3 where one Intel Xeon Phi coprocessor computes 3x faster than one single processor socket. The respective MPI tracing shows:

The above event time line suggests that the coprocessors (P0, P1, P4, and P5) took longer to complete their work now 3x larger than the amount assigned to the processors (P2 and P3), causing the processors to block idle (red regions) waiting for the work to be completed.

Finally, we set factor_speed_phi=13 and factor_speed_xeon=5, representing the assumption of ratio 13/5= 2.6 where one Intel Xeon Phi coprocessor computes 2.6x faster than one single processor socket:

For this case, there is basically no noticable idle time due to load imbalance. This case represents an optimal load-balancing configuration.

Note that the above static analysis applies to the specific hardware configuration (processor model, Intel Xeon Phi coprocessor model, number of processors, memory speed, and so on). Any change in hardware configuration or algorithm implementation would require a new static analysis.

Sample Code

To exemplify the above concepts, we provide sample source code in the attached sample source code package. The reader should be able to build, run, and analyze the example. The MPI job can be set to either run mpi ranks (processes) on both Intel Xeon processor sockets and on Intel Xeon Phi coprocessor; or only on processor sockets; or only on Intel Xeon Phi coprocessor cards.

For the sake of simplicity, we do not provide or discuss the single process version of ISO-3DFD already presented and released in [1, 2]. Instead, we provide an additional MPI harness that extends the ISO-3DFD to a distributed ISO-3DFD that supports halo exchanges and load balancing between processors and coprocessors. In this way, future versions of ISO-3DFD can be replaced into this same sample code.

The only dependencies to build this simple example are the original ISO-3DFD single process compute kernel that can be found in [1,2]; and Intel® software development tools (Intel® C and C++ compilers, Intel MPI Library, and ITAC).

The README file contains intructions on how to build and run the sample code. The Makefile creates two executables: dist-iso-3dfd that runs on the processors and dist-iso-3dfd.MIC that runs on the Intel Xeon Phi coprocessor. Use the variables VERSION_MIC and VERSION_CPU to choose which version of the ISO-3DFD to use.

The script run_example.sh suggests how to launch both executables using the Intel MPI Library. Refer to [3] for additonal information. The script exemplifies a way to run on a system populated with two processors and two Intel Xeon Phi coprocessor cards. It can be easily expanded to run on a cluster and on different node configurations. When the script variable TRACE_OPTION=-t is set, traces of the MPI communication are collected so that one can perform the static load balancing  as described in the previous section. The static load balancing is possible because the main source code dist-iso-3dfd.cc accepts the parameters factor_speed_phi and factor_speed_xeon as command-line options. Use these as described in the Workload Balancing section.

The script also supports all the command-line options required by the main executable:
nx  ny  nz  #threads  #iterations  x-blocking  y-blocking  z-blocking  factor_speed_phi  factor_speed_xeon
and additional MPI and OpenMP settings.

Note this is only an example. For optimal compiling options and runtime parameters for the ISO-3DFD compute kernel, refer to [1,2]. For performance results on single and multiple nodes refer to [5].

Conclusion

This article described a sample implementation for distributed FD methods, a 1D  decomposition of a ISO-3DFD stencil compute kernel. The implementation supports heterogenous systems with processors and coprocessors by supporting static loading balancing to deal with the different compute speeds of each device.

Using an MPI message-profiling tool, one is able to analyze if at each time step either 1) the Intel Xeon Phi coprocessors are waiting for processors to be completed, or 2) Intel Xeon processors are waiting for the Intel Xeon Phi coprocessors to complete.

References

[1] “Optimizing and Running ISO 3DFD with Support for Intel® Xeon Phi™ Coprocessor.” http://software.intel.com/en-us/articles/eight-optimizations-for-3-dimensional-finite-difference-3dfd-code-with-an-isotropic-iso

[2] “Characterization and Optimization Methodology Applied to Stencil Computations,” in the book High Performance Parallelism Pearls (J. Reinders and J. Jeffers, editors). http://www.techenablement.com/characterization-optimization-methodology-applied-stencil-computations/

[3] “How to run Intel MPI on Xeon Phi” http://software.intel.com/en-us/articles/how-to-run-intel-mpi-on-xeon-phi

[4] Tutorial: Analyzing MPI Applications with Intel® Trace Analyzer and Intel® VTune™ Amplifier XE. http://software.intel.com/en-us/analyzing-mpi-apps-with-itac-and-vtune

[5] “Intel® Xeon Phi™ Coprocessor Energy Application Benchmarks.” http://www.intel.com/content/www/xr/en/benchmarks/server/xeon-phi/xeon-phi-energy.html

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