The Open MPI Team, representing a consortium of research, academic, and 
industry partners, is pleased to announce the release of Open MPI version 2.0.1.

v2.0.1 is a bug fix release. All users are encouraged to upgrade to v2.0.1 when 

Version 2.0.1 can be downloaded from the main Open MPI web site

2.0.1 -- 2 September 2016

Bug fixes/minor improvements:

- Short message latency and message rate performance improvements for
  all transports.
- Fix shared memory performance when using RDMA-capable networks.
  Thanks to Tetsuya Mishima and Christoph Niethammer for reporting.
- Fix bandwith performance degredation in the yalla (MXM) PML.  Thanks
  to Andreas Kempf for reporting the issue.
- Fix OpenSHMEM crash when running on non-Mellanox MXM-based networks.
  Thanks to Debendra Das for reporting the issue.
- Fix a crash occuring after repeated calls to MPI_FILE_SET_VIEW with
  predefined datatypes.  Thanks to Eric Chamberland and Matthew
  Knepley for reporting and helping chase down this issue.
- Fix stdin propagation to MPI processes.  Thanks to Jingchao Zhang
  for reporting the issue.
- Fix various runtime and portability issues by updating the PMIx
  internal component to v1.1.5.
- Fix process startup failures on Intel MIC platforms due to very
  large entries in /proc/mounts.
- Fix a problem with use of relative path for specifing executables to
  mpirun/oshrun.  Thanks to David Schneider for reporting.
- Various improvements when running over portals-based networks.
- Fix thread-based race conditions with GNI-based networks.
- Fix a problem with MPI_FILE_CLOSE and MPI_FILE_SET_SIZE.  Thanks
  to Cihan Altinay for reporting.
- Remove all use of rand(3) from within Open MPI so as not to perturb
  applications use of it.  Thanks to Matias Cabral and Noel Rycroft
  for reporting.
- Fix crash in MPI_COMM_SPAWN.
- Fix types for MPI_UNWEIGHTED and MPI_WEIGHTS_EMPTY.  Thanks to
  Lisandro Dalcin for reporting.
- Correctly report the name of MPI_INTEGER16.
- Add some missing MPI constants to the Fortran bindings.
- Fixed compile error when configuring Open MPI with --enable-timing.
- Correctly set the shared library version of  Thanks
  to Alastair McKinstry for reporting.
- Fix errors in the MPI_RPUT, MPI_RGET, MPI_RACCUMULATE, and
  MPI_RGET_ACCUMULATE Fortran bindings.  Thanks to Alfio Lazzaro and
  Joost VandeVondele for tracking this down.
- Fix problems with use of derived datatypes in non-blocking
  collectives.  Thanks to Yuki Matsumoto for reporting.
- Fix problems with OpenSHMEM header files when using CMake.  Thanks to
  Paul Kapinos for reporting the issue.
- Fix problem with use use of non-zero lower bound datatypes in
  collectives.  Thanks to Hristo Iliev for reporting.
- Fix a problem with memory allocation within MPI_GROUP_INTERSECTION.
  Thanks to Lisandro Dalcin for reporting.
- Fix an issue with MPI_ALLGATHER for communicators that don't consist
  of two ranks.  Thanks to David Love for reporting.
- Various fixes for collectives when used with esoteric MPI datatypes.
- Fixed corner cases of handling DARRAY and HINDEXED_BLOCK datatypes.
- Fix a problem with filesystem type check for OpenBSD.
  Thanks to Paul Hargrove for reporting.
- Fix some debug input within Open MPI internal functions.  Thanks to
  Durga Choudhury for reporting.
- Fix a typo in a configury help message.  Thanks to Paul Hargrove for
- Correctly support MPI_IN_PLACE in MPI_[I]ALLTOALL[V|W] and
- Fix alignment issues on SPARC platforms.

Known issues (to be addressed in v2.0.2):

- See the list of fixes slated for v2.0.2 here:, and
  (note that the "ompi-release" Github repo will be folded/absorbed
  into the "ompi" Github repo at some point in the future)

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