WeeklyTelcon_20190122

Open MPI Weekly Telecon

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• Dialup Info: (Do not post to public mailing list or public wiki)

Attendees (on Web-ex)

• Geoff Paulsen
• Ralph Castain
• Edgar Gabriel
• Jeff Squyres
• Aravind Gopalakrishnan (Intel)
• Josh Hursey
• Joshua Ladd
• Xin Zhao

not there today (I keep this for easy cut-n-paste for future notes)

• Todd Kordenbrock
• Brian Barrett
• Howard Pritchard
• Nathan Hjelm
• Dan Topa (LANL)
• Thomas Naughton
• Matias Cabral
• Akshay Venkatesh (nVidia)
• David Bernholdt
• Geoffroy Vallee
• Matthew Dosanjh
• Arm (UTK)
• George
• Peter Gottesman (Cisco)
• mohan

Agenda/New Business

• Doodle to select week for OMPI face-to-face

  • https://doodle.com/poll/rsf5gxsw9nypx3xe
  • Currently April 22 (voting closes end of the day) Face to Face.
  • Locations probably: Jeff will ping Brian, Dallas or San Jose

• Future of the Openib BTL on master: https://github.com/open-mpi/ompi/pull/6270

  • We won't have any verbs code at all in v5.0
  • --with-verbs might totally go away.
  • Several common components here.
  • hwloc might still need ibverbs

• OpenIB - is only verbs based BTL that supports Instant on (no modex in MPI)

  • was it integrated? No not been integated.
  • UCX also was not integrated.
  • Component that needs to go into the pmix pnet framework.

• github suggestion on email filtering

Minutes

Review All Open Blockers

Review v3.0.x Milestones v3.0.3

• Scheduled 3.1.4 may of 2019? Probably earlier
• Not sure of RC status.
• Should resolve https://github.com/open-mpi/ompi/issues/6198 before releasing

Review v3.1.x Milestones v3.1.0

• Brian will put out an RC on Friday
• Not sure of RC status.
• Should resolve https://github.com/open-mpi/ompi/issues/6198 before releasing

Review v4.0.x Milestones v4.0.1

• Schedule: Need a quick turn around for a v4.0.1
• v4.0.0
• Adding OSHMEM API - bug. Need to rev .so versions correctly
• https://github.com/open-mpi/ompi/issues/6278
  • Removed symbols and nice message on master and v4.0.x does not give a compile time error. What do we want?
    • Do we want compile time error? Or just removed symbol and linker error
    • Could add a Check for C11, and use 'static assert' for nice message.
    • For older compilers could just NOT declare the function.
      • but that doesn't work for v4.0.x since the symbols in the library will be there, and the comiler will only issue a warning that about no prototype, but will succeed and link correctly.
      • It was decided that this is okay, if the C11 static assert check is in mpi.h. Most users set 'no prototype' as an error.
  • Tests on v4.0.x started passing, but possibly false positives. We will look at how the ibm tests are passing with #6278 issue on master and v4.0.x
• Should resolve https://github.com/open-mpi/ompi/issues/6198 before releasing

v5.0.0

• Any Schedule for this yet? Summer of 2019
• Discussion of schedule depends on scope discussion
  • if we want to seperate Orte out for that? Might delay a bit
• May want to open up release-manager elections.

Master

PMIx

• There was a problem with PMIx v3.1.0 - should post another today.

MTT

• Cisco showing build failure.
• IBM test configure should have caused that.
• Cisco has a one-sided info check that failed a hundred times.
  • Cisco install fail looks like a legit compile fail (ipv6 master)

New topics

• March 4th is next MPI Forum (then June)
• We have a new open-mpi SLACK channel for Open MPI developers.
  • Not for users, just developers...
  • email Jeff If you're interested in being added.

Review Master Master Pull Requests

• didn't discuss today.

Review Master MTT testing

Oldest PR

Oldest Issue

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Status Updates:

Status Update Rotation

1. Mellanox, Sandia, Intel
2. LANL, Houston, IBM, Fujitsu
3. Amazon,
4. Cisco, ORNL, UTK, NVIDIA

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