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WeeklyTelcon_20210810

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Geoffrey Paulsen edited this page Aug 10, 2021 · 1 revision

Open MPI Weekly Telecon ---

Attendees (on Web-ex)

  • Austen Lauria (IBM)
  • Geoffrey Paulsen (IBM)
  • Sam Gutierrez (LANL)
  • Brendan Cunningham (Cornelis Networks)
  • Harumi Kuno (HPE)
  • Hessam Mirsadeghi (NVIDIA))
  • Howard Pritchard (LANL)
  • Naughton III, Thomas (ORNL)
  • Tomislav Janjusic (NVIDIA)
  • William Zhang (AWS)
  • George Bosilca (UTK)
  • David Bernholdt (ORNL)
  • Joseph Schuchart (HLRS)
  • Josh Hursey (IBM)

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

  • Michael Heinz (Cornelis Networks)
  • Todd Kordenbrock (Sandia)
  • Akshay Venkatesh (NVIDIA)
  • Artem Polyakov (NVIDIA)
  • Aurelien Bouteiller (UTK)
  • Brandon Yates (Intel)
  • Brian Barrett (AWS)
  • Charles Shereda (LLNL)
  • Christoph Niethammer (HLRS)
  • Edgar Gabriel (UH)
  • Erik Zeiske (HPE)
  • Geoffroy Vallee (ARM)
  • Jeff Squyres (Cisco)
  • Joshua Ladd (NVIDIA)
  • Marisa Roman (Cornelius)
  • Mark Allen (IBM)
  • Matias Cabral (Intel)
  • Matthew Dosanjh (Sandia)
  • Nathan Hjelm (Google)
  • Noah Evans (Sandia)
  • Raghu Raja
  • Ralph Castain (Intel)
  • Scott Breyer (Sandia?)
  • Shintaro iwasaki
  • Xin Zhao (NVIDIA)

New Topics For Today

  • Talk about Jenkins notifications
    • Anyone getting notifications from AWS server that runs Jenkins when somethings goes wrong.
      • Defer to discuss
  • Talk about OSHMEM link issue in v4.0 and v4.1 Do we want this change in the release branches? Or just wait for v5.0?
    • Consensus was to NOT take into release branches.
    • Leave issue open to investigate for different solution.
  • Remind everyone of the Annual Open MPI committer's review.
  • google sheet: https://docs.google.com/spreadsheets/d/1xjt4ruOXhFAM8NFMtma9AT-9t_TTKwrhIAj8Dlm_uqg/edit#gid=2132628157

v4.0.x

  • Schedule: milestone is set for September for 4.0.7
  • Should PR9210 - be PRed back to v4.0.x
  • Nothing special to discuss this week

v4.1.x

  • Schedule: Planning on late August (no reason for August) for accumulated bugfixes.
  • Nothing special to discuss this week

v5.0.x

  • PMIx v4.1.0 released
  • PRRTE v2.0.0 released
    • Geoff will check that our submodule pointers are updated correctly.
  • Went over the Github Project of [critical v5.0.x issues|https://github.com/open-mpi/ompi/projects/3]
  • Proposed rc1 on Sept 24th, 2021
    • No discussion, so we're going forward with that.
    • Worried that TCP OSC blockers might not be fixed in time, so will put in code to issue an error at runtime to prevent getting into those paths, and document it heavily.

Master

Documentation

  • No update

MPI 4.0 API

  • Howard showed off new [Open MPI 4.0 API Compliance Github Project|https://github.com/open-mpi/ompi/projects/2]
    • This is not yet the FULL list of things for 4.0, Howard is still working through minutes.
  • Please use MPI-4.0 label
  • Error handling changes are done, and in the Done catagory of
    • Random Notes about don't need to do something, or a way our implementation is already working correctly.
    • Comm Dup, and non-propagation of info.
  • MPI_T Events - someone needs to review
  • Sessions, just about to remove the WIP label.
    • Can leave it, or squish it, please comment on PR.
    • No intention to merge back to v5.0.0
  • Do need people to review oustanding PRs in the "In Progress" column of MPI 4.0
    • MPI_T events 8057
    • mpi_minimum_alignment info 7985
  • All of the issues in the MPI 4.0 Compliance
  • The To-Dos, some are big and some are small.
    • MPI_INFO_GET string is small, and infrastructure is small
    • Isendrecv and Isendrecv_replace should be easy
  • embiggening is big but not hard.
    • A lot of files will be impacted up at the top, but not much internally.
    • Important in next few years.
  • MPI_Comm_Idup_with_info - small one.
  • MPI_Cancel - should add deprecation warning
    • Tricky because it's only deprecated for sends. So can't just do what we did with headerfiles.
      • Could make the message in the header call out only send requests. If warning at compile time is happy enough.
      • Or might need runtime warning.
  • MPI_Sizeof should be deprecated
    • This is only for Fortran, and need to find a way at compiletime Particularly at F08
    • Geoff will see if XLF has something like this.
  • Can't gaurantee didn't miss anything with MPI Forum changelog.
  • Should use this these projects going forward.
  • What's intent of MPI-4.0 Label?
    • We'll keep using that for now, but in future may just use projects.

MTT

  • Hiccup yesterday. May have some data-loss from yesterday.
    • LANL - still having issue with cherry-pi
    • If you're posting MTT data but don't see it there, let Jeff or Howard Know.
  • NVIDIA will investigate to get v5.0 and master back online

Longer Term discussions

  • No discussion.
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