WeeklyTelcon_20181030

Open MPI Weekly Telecon

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

Attendees (in Person)

• Incomplete List this week, sorry.
• Geoff Paulsen
• Jeff Squyres
• Brian
• Edgar Gabriel
• Geoffroy Vallee
• Howard Pritchard
• Ralph Castain
• Josh Hursey
• Matthew Dosanjh
• Thomas Naughton
• Todd Kordenbrock
• Xin Zhao
• Aravind Gopalakrishnan (Intel)
• Matias Cabral

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

• Nathan Hjelm
• David Bernholdt
• Akshay Venkatesh
• Arm (UTK)
• Dan Topa (LANL)
• Akvenkatesh (nVidia)
• Dan Topa (LANL)
• George
• Peter Gottesman (Cisco)
• Joshua Ladd?
• mohan

Agenda/New Business

• Face to Face was next week

• Summary of PMIx re-architecturing for v5.0

• Lots of TCP wire-up discussion

• github suggestion on email filtering

Minutes

Review All Open Blockers

Review v2.1.6 (not going to do this in immediate future.

• Schedule:
• Dec 1st after super computing

Review v3.0.x Milestones v3.0.3

• Schedule:
• Yesterday 3.0.3 shipped.
• Scheduled 3.0.4 may of 2019

Review v3.1.x Milestones v3.1.0

• Schedule:
• Shipped 3.1.3 yesterday
• Scheduled 3.1.4 april of 2019

v4.0.0

• Schedule: Shoot
• Filed PR 5995 today to address PGI --enable-debug install fail.
• merged libevent fix
• Two rankfile mapper issues reported on mailing list. Howard will file issue.
• Want to issue MPR deprication warning in (master)PR 5947
• Need to add to FAQ, README, and NEWS (Important giant changes)
  • Decided to make a special website, we've never removed MPI symbols before.
  • Make it googlable.
  • MPI1 removal
    • How to transition from MPI_UB/MPI_LB
    • symbols that are missing.
    • How to transition is IN MPI 2.2 standard doc, but not in 3.1... haha
  • openib removal for infiniband cards.
    • go get ucx (or use this mca param)
  • configury defaults to external for some components (pmix, hwloc, libevent)
• On call Jeff discovered that We removed a bit too much (v4.0.x currently
  • Blocker, but can get it done today.
  • Jeff will work on writeup
  • Geoff will create PR to add by the depricated symbols back to mpi.h
  • We never removed the symobls from lib, just from header, so probably just header changes. Not sure if anything was done for Fortran.
• Mellanox will writeup some FAQ entries for UCX in Open MPI
• nVidia will writeup some GPU FAQ entries

PMIx

• Nothing new at this time.

Master

• IBM is getting PGI failures on v4.0 with --enable-debug to build.
  • Should be resolved by https://github.com/open-mpi/ompi/pull/5995
• openib is failing out at IBM MTT with device failure.
  • We should be memsetting a datastructure to 0 before ibv_x_query_device (mention in issue 5810) in 4.0 and master.
  • ibv_x_query_device - warning.
  • Then invalid window error - need to investigate this (possibly caused by above)
  • Howard will try memset and open PR if it works.

Super Computing Open MPI BOF, and PMIx BOF

• Invite your friends to BOF.
  • Wed is a social thing. (Jeff Squyres is organizing - email if interested)

MTT

• 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

• We have a new ibm-ompi 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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