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Open MPI

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Title: Open MPI  
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Subject: Message Passing Interface, LAM/MPI, Sun Constellation System, MPICH, Application checkpointing
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Open MPI

Open MPI
Stable release 1.10.0 / August 25, 2015 (2015-08-25)
Operating system Unix, Linux, Mac OS
Platform Cross-platform
Type Library
License New BSD License (free software)

Open MPI is a Message Passing Interface (MPI) library project combining technologies and resources from several other projects (FT-MPI, LA-MPI, LAM/MPI, and PACX-MPI). It is used by many TOP500 supercomputers including Roadrunner, which was the world's fastest supercomputer from June 2008 to November 2009,[1] and K computer, the fastest supercomputer from June 2011 to June 2012.[2][3]


  • Overview 1
  • Code modules 2
  • Commercial implementations 3
  • See also 4
  • References 5
  • External links 6


Open MPI represents the merger between three well-known MPI implementations:

with contributions from the PACX-MPI team at the University of Stuttgart. These four institutions comprise the founding members of the Open MPI development team.

The Open MPI developers selected these MPI implementations as excelling in one or more areas. Open MPI aims to use the best ideas and technologies from the individual projects and create one world-class open-source MPI implementation that excels in all areas. The Open MPI project specifies several top-level goals:

  • to create a free, open source software, peer-reviewed, production-quality complete MPI-3.0 implementation
  • to provide extremely high, competitive performance (low latency or high bandwidth)
  • to involve the high-performance computing community directly with external development and feedback (vendors, 3rd party researchers, users, etc.)
  • to provide a stable platform for 3rd-party research and commercial development
  • to help prevent the "forking problem" common to other MPI projects
  • to support a wide variety of high-performance computing platforms and environments

Code modules

The Open MPI code has 3 major code modules:

  • OMPI - MPI code
  • ORTE - the Open Run-Time Environment
  • OPAL - the Open Portable Access Layer

Commercial implementations

  • Sun HPC Cluster Tools - beginning with version 7, Sun switched to Open MPI
  • Bullx MPI—In 2010 Bull announced the release of bullx MPI, based on Open MPI[4]

See also


  1. ^ Jeff Squyres. "Open MPI: 10^15 Flops Can't Be Wrong" (PDF). Open MPI Project. Retrieved 2011-09-27. 
  2. ^ "Programming on K computer" (PDF). Fujitsu. Retrieved 2012-01-17. 
  3. ^ "Open MPI powers 8 petaflops".  
  4. ^ Aurélie Negro. "Bull launches bullx supercomputer suite". Bull SAS. Retrieved 2013-09-27. 

External links

  • Open MPI Project Homepage
  • RCE01: Open MPI - RCE Podcast interview
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