Intel® MPI Library Release Notes

This page provides the current Release Notes for Intel® MPI Library. The notes are categorized by year, from newest to oldest, with individual releases listed within each year.

Click a version to expand it into a summary of new features and changes in that version since the last release, and access the download buttons for the detailed release notes, which include important information, such as pre-requisites, software compatibility, installation instructions, and known issues.

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2018

Update 1

Linux* Release NotesWindows* Release Notes

• Startup performance improvements.

Initial Release

Linux* Release NotesWindows* Release Notes

• Hydra startup improvements.
• Improved support for Intel® Omni-Path Architecture.
• Support removal for the Intel® Xeon Phi™ coprocessor (code named Knights Corner).
• New deprecations.

2017

Update 4

Linux* Release NotesWindows* Release Notes

• Performance tuning for processors based on Intel® microarchitecture codenamed Skylake and for Intel® Omni-Path Architecture.
• Deprecated support for the IPM statistics format.

Update 3

Linux* Release NotesWindows* Release Notes

• Hydra startup improvements.
• Default fabrics list change.

Update 2

Linux* Release NotesWindows* Release Notes

• New environment variables: I_MPI_HARD_FINALIZE and I_MPI_MEMORY_SWAP_LOCK.

Update 1

Linux* Release NotesWindows* Release Notes

• PMI-2 support for SLURM*, improved SLURM support by default.
• Improved mini-help and diagnostic messages, man1 pages for mpiexec.hydra, hydra_persist, and hydra_nameserver.
• New deprecations.

Initial Release

Linux* Release NotesWindows* Release Notes

• Support for the MPI-3.1 standard.
• New topology-aware collective communication algorithms.
• Effective MCDRAM (NUMA memory) support.
• Controls for asynchronous progress thread pinning.
• Performance tuning.
• New deprecations.

5.1

Update 3 Build 223

Linux* Release Notes

• Fix for issue with MPI_Abort call on threaded applications (Linux* only)

Update 3

Linux* Release NotesWindows* Release Notes

• Fixed shared memory problem on Intel® Xeon Phi™ processor (codename: Knights Landing)
• Added new algorithms and selection mechanism for nonblocking collectives
• Added new psm2 option for Intel® Omni-Path fabric
• Added I_MPI_BCAST_ADJUST_SEGMENT variable to control MPI_Bcast
• Fixed long count support for some collective messages
• Reworked the binding kit to add support for Intel® Many Integrated Core Architecture and support for ILP64 on third party compilers
• The following features are deprecated in this version of the Intel MPI Library. For complete list of all deprecated and removed features, visit our deprecation page.
  • SSHM
  • MPD (Linux*)/SMPD (Windows*)
  • Epoll
  • JMI
  • PVFS2

Update 2

Linux* Release NotesWindows* Release Notes

• Intel® MPI Library now supports YARN* cluster manager (Linux* only)
• DAPL library UCM settings are automatically adjusted for MPI jobs of more than 1024 ranks, resulting in more stable job start-up (Linux* only)
• ILP64 support enhancements, support for MPI modules in Fortran 90
• Added the direct receive functionality for the TMI fabric (Linux* only)
• Single copy intra-node communication using Linux* supported cross memory attach (CMA) is now default (Linux* only)

Update 1

Linux* Release NotesWindows* Release Notes

• Changes to the named-user licensing shceme. See more details in the Installation Instructions section of Intel® MPI Library Installation Guide.
• Various bug fixes for general stability and performance.

Initial Release

Linux* Release NotesWindows* Release Notes

• Added support for OpenFabrics Interface* (OFI*) v1.0 API
• Added support for Fortran* 2008
• Updated the default value for I_MPI_FABRICS_LIST
• Added brand new Troubleshooting chapter to the Intel® MPI Library User's Guide
• Added new application-specific features in the Automatic Tuner and Hydra process manager
• Added support for the MPI_Pcontrol feature for improved internal statistics
• Increased the possible space for MPI_TAG
• Changed the default product installation directories
• Various bug fixes for general stability and performance