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WeeklyTelcon_20200407

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Geoffrey Paulsen edited this page Apr 7, 2020 · 1 revision

Open MPI Weekly Telecon ---

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

Attendees (on Web-ex)

  • Geoffrey Paulsen (IBM)
  • Jeff Squyres (Cisco)
  • Austen Lauria (IBM)
  • Akshay Venkatesh (NVIDIA)
  • Artem Polyakov (Mellanox)
  • Brian Barrett (AWS)
  • Brendan Cunningham (Intel)
  • David Bernhold (ORNL)
  • Edgar Gabriel (UH)
  • Geoffroy Vallee (ARM)
  • George Bosilca (UTK)
  • Harumi Kuno (HPE)
  • Howard Pritchard (LANL)
  • Joseph Schuchart
  • Josh Hursey (IBM)
  • Joshua Ladd (Mellanox)
  • Matthew Dosanjh (Sandia)
  • Thomas Naughton (ORNL)
  • Ralph Castain (Intel)
  • Scott Breyer (Sandia?)
  • Todd Kordenbrock (Sandia)
  • William Zhang (AWS)

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

  • Noah Evans (Sandia)
  • Michael Heinz (Intel)
  • Erik Zeiske
  • Shintaro iwasaki
  • Nathan Hjelm (Google)
  • Charles Shereda (LLNL)
  • Brandon Yates (Intel)
  • Mark Allen (IBM)
  • Matias Cabral (Intel)
  • Xin Zhao (Mellanox)
  • mohan (AWS)

New

  • Next week 4/7 - Discuss ompirun front end with python integration for -net

Old

  • MTT -
    • If you change your MTT to startup PRRTE at begining of session, and just use prun.
    • Can see times cut in half or more.
    • This is good, but also need to test mpirun wrapper.
    • Cisco is converting half of MPI installs to use prrte/prun

OMPI submodules

  • OMPI master submodule pointers setup to track PMIx and PRRTE master.

Release Branches

Blockers All Open Blockers

Review v4.0.x Milestones v4.0.4

  • v4.0.4 in the works.
  • Do we want to integrate with latest PMIx v3.1 branch (commits after v3.1.5)?
  • Comm Spawn failure on v4.0.3, possibly related to PMIx v3.1.4 commit.
    • Ralph is looking at.
    • If this is in PMIX, then this might drive a new v3.1 release.

v5.0.0

  • Schedule:

    • Feature Freeze: April 30
    • Release: End of June

  • Discussing Features on google sheets document

  • PMIx v4.0.0 - on track

    • Schedule:
    • PMIX - Won't release v4.0 in time for OMPI v5.0, but will drop a tag that Open-MPI can use.

  • PRRTE v2.0 - on track

  • Issues not tracked on spreadsheet.

    • libopal isn't slurped into Open-MPI correctly (related to 7560)
      • Jeff and Brian will meet Friday and

master

  • Heriarchacal collectives

    • If someone wants to do, PMIx has much of this information already.
    • Not too hard to do, and they're much faster. Will be in next version of competitor MPI
    • Probably not for v5.0

  • Static linking is failing on master right now.

    • Issue 7560
    • May be an issue in static build support in PMIx and PRTE as well as how we're pulling it in.
    • Affects everything, just masked at the moment because static linking is broken.
    • Jeff will investigate
    • No progress.

  • SLURM PMIx plugin has been locked on PMIx v2 for some time.

    • There are some NEW PMIx calls that SHOULD be added to bring it up.
      • Ralph has started a PR, but needs help.
    • So for now, there's some optional info that won't be passed correctly.
      • No OMPI_INFO for now.
      • Ralph gets pinged occasionally.
    • Not sure priority of this.

  • MTT on master is looking pretty good.

Face to face

  • Defered.

Infrastrastructure

  • scale-testing, PRs have to opt-into it.

Review Master Master Pull Requests

CI status

Depdendancies

PMIx Update

  • CI testing only tests build and did it run, but doesn't test HOW it ran.
    • Environment setup can be a bit different.
    • For example no-permissions in /tmp. Might pass on one machine, and fail on another without /tmp permissions.

ORTE/PRRTE

MTT

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