Meeting 2022

Open MPI Developer's TBD 2022 Virtual Meeting

The meeting will be determined by most availability.

Meeting dates:

This is a link to a non-public repo for the Webex info (posting Webex links publicly just invites spam; sorry folks).

If you do not have access to the non-public repo, please email Jeff Squyres to get the Webex info.

Please put your name down here if you plan to attend. All rumors of snacks were greatly exaggerated.

Please add Agenda items we need to discuss here.

Big Payload operations
- What should we set MPI_Count to?
- What is the maximum payload we claim to support in Open MPI for collectives (and other MPI operations)
  - This can get quite large if count x datatype and be challenging to support internally.
- Do we need to check the payload against the supported payload limit and error out early?
- Big Count Collective Test Suite: link
- Bug reports:
  - coll/basic main v4.1
  - coll/adapt main v4.1
  - coll/han main v4.1
  - coll/tuned main v4.1
  - coll/ftagree
- Fixes already in place:
  - coll/libnbc:
    - https://github.com/open-mpi/ompi/pull/9606
    - https://github.com/open-mpi/ompi/pull/9616
  - coll/inter:
    - https://github.com/open-mpi/ompi/pull/9942
  - coll/basic:
    - https://github.com/open-mpi/ompi/pull/9956
GPU support
- there was some discussion on the mailing list whether we need to abstract out GPU support into a separate framework and have CUDA/ROCm/OneAPI etc. be just components in that framework.
Fortran 2018 ISO_Fortran_binding.h support and implications
- https://github.com/open-mpi/ompi/pull/10302
Review and revise the Open MPI Administrative rules
- See https://github.com/open-mpi/ompi/wiki/Administrative-rules
- For example, we haven't needed/used the Administrative Steering Committee in years
Need RMs for v5.1.x
Missing MPI 4.0 features project
- Large counts (Embiggenment) : https://github.com/mpi-forum/mpi-issues/issues/137