The first release candidate for Open MPI v4.0.7 is now available for testing:

Some fixes include:

- Numerous fixes from vendor partners.

- Fix a problem with a couple of MPI_IALLREDUCE algorithms.  Thanks to

  John Donners for reporting.

- Fix an edge case where MPI_Reduce is invoked with zero count and NULL

  source and destination buffers.

- Use the mfence instruction in opal_atomic_rmb on x86_64 cpus.  Thanks

  to George Katevenis for proposing a fix.

- Fix an issue with the Open MPI build system using the SLURM provided

  PMIx when not requested by the user.  Thanks to Alexander Grund for


- Fix a problem compiling Open MPI with clang on case-insensitive

  file systems.  Thanks to @srpgilles for reporting.

- Fix some OFI usNIC/OFI MTL interaction problems.  Thanks to

  @roguephysicist for reporting this issue.

- Fix a problem with the Posix fbtl component failing to load.

  Thanks to Honggang Li for reporting.

Your Open MPI release team.



Howard Pritchard
Research Scientist

Los Alamos National Laboratory


ompi-packagers mailing list

Reply via email to