WeeklyTelcon_20220712

Open MPI Weekly Telecon ---

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

Attendees (on Web-ex)

• Austen Lauria (IBM)
• Brendan Cunningham (Cornelis Networks)
• David Bernhold (ORNL)
• Edgar Gabriel (UoH)
• Geoffrey Paulsen (IBM)
• Howard Pritchard (LANL)
• Joseph Schuchart
• Josh Fisher (Cornelis Networks)
• Josh Hursey (IBM)
• Todd Kordenbrock (Sandia)
• Tommy Janjusic (nVidia)

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

• Akshay Venkatesh (NVIDIA)
• Artem Polyakov (nVidia)
• Aurelien Bouteiller (UTK)
• Brandon Yates (Intel)
• Brian Barrett (AWS)
• Charles Shereda (LLNL)
• Christoph Niethammer (HLRS)
• Erik Zeiske
• Geoffroy Vallee (ARM)
• George Bosilca (UTK)
• Harumi Kuno (HPE)
• Hessam Mirsadeghi (UCX/nVidia)
• Jeff Squyres (Cisco)
• Joshua Ladd (nVidia)
• Marisa Roman (Cornelius)
• Mark Allen (IBM)
• Matias Cabral (Intel)
• Matthew Dosanjh (Sandia)
• Michael Heinz (Cornelis Networks)
• Nathan Hjelm (Google)
• Noah Evans (Sandia)
• Raghu Raja (AWS)
• Ralph Castain (Intel)
• Sam Gutierrez (LLNL)10513
• Scott Breyer (Sandia?)
• Shintaro iwasaki
• Thomas Naughton (ORNL)
• William Zhang (AWS)
• Xin Zhao (nVidia)

---

v4.1.x

• v4.1.5

  • Schedule: targeting ~6 mon (Nov 1)
  • No driver on schedule yet.

• Looks like 5 PRs are reviewed and ready to be merged (https://github.com/open-mpi/ompi/pulls?q=is%3Apr+is%3Aopen+base%3Av4.1.x+)

  • William Would like merged PR#10513

• Brendan summarized 3 CVEs in libevent 2.0.x series, that are fixed in newer versions of libevent.

  • Two of the CVEs are almost certainly NOT built when Open MPI builds libevent.
  • Third CVE is in some search function supporting search (haven't traced if we actually compile it in for Open MPI).
  • Fixed in libevent 2.1.8
  • libevent fixes will be needed on v4.1.x and v4.0.x
  • Brian mentioned on RM Slack channel that upgrading libevent version would be best path
  • Brendan will post PR to show how little change is needed...
    • Balance between risk and reward.

• Last week discussion: Would not want to try upgrading libevent to v2.1.8 for v4.1.x

  • Fixes are contained to simple fixes (bounds/range checking fix)
  • Cherry-picks is much less risky
  • Decided Brendan will PR the small cherry-picks needed to v4.1.x and try v4.0.x.

v5.0.x

• Schedule:
  • Still Looking at end of summer
    • PRRTE (longest blocker task) is targeting late summer.
  • Still using Critical v5.0.x Issues (https://github.com/open-mpi/ompi/projects/3) yesterday
• Keeping an eye on PRRTE branch (ralph will create new v3 branch soon).
  • When this happens we'll swap out submodule pointer.
  • OMPI main prrte submodule pointer is already pointing to prrte main
• Sessions PR fix merged to v5.0.x

PRRTE

• Ralph is deleting PRRTE v2.1 branch, and create a new release branch off of PRRTE master
  • https://groups.google.com/g/pmix/c/6bT-mQq4Sqs/m/8Y0NsSbeBgAJ
  • Requires OMPIx v4.1.2
  • new branch not yet posted to PRRTE, but once it does Austen will PR a OMPI v5.0.x submoule pointer update.

Main branch

• Joseph is trying to do HAN / Adapt runs.
  • main branch.
  • x86 with infiniband.
  • Sometimes the startup hangs (really annouing).
  • Don't know if it's a prrte run hang?
  • Tried to run with GDB/DDT, but of course then it doesn't hang.
  • He'll try to see if it's before MPI_Init in PRRTE or something else.

Accelerator framework

• sm_cuda component was moved into framework.
  • nVidia has some issues building, and will try again to test

Attomics PRs.

• 10492 and link to 10487
  • Geoff STILL needs to test on ppc64le, will get to this, THIS week.
• Joseph will post some additional info thing in the ticket

MTT

Administrative tasks

• we're to review the admin steering committee in July (per our rules):
  • https://github.com/open-mpi/ompi/wiki/Administrative-rules#administrative-steering-committee-asc
• we're to review the technical steering committee in July (per our rules):
  • https://github.com/open-mpi/ompi/wiki/Administrative-rules#technical-steering-committees
• We should also review all the OMPI github, slack, and coverity members during the month of July.
  • Jeff will kick that off sometime this week or next week.
• In the call we mentioned this, but no real discussion.

Face-to-face

• Wiki for face to face: https://github.com/open-mpi/ompi/wiki/Meeting-2022
  • Might be better to do a half-day/day-long virtual working session.
    • Due to company's travel policies, and convenience.
    • Could do administrative tasks here too.