WeeklyTelcon_20220823

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)
• Brian Barrett (AWS)
• Christoph Niethammer (HLRS)
• Edgar Gabriel (UoH)
• Geoffrey Paulsen (IBM)
• Harumi Kuno (HPE)
• Howard Pritchard (LANL)
• Josh Fisher (Cornelis Networks)
• Thomas Naughton (ORNL)
• 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)
• Charles Shereda (LLNL)
• David Bernhold (ORNL)
• Erik Zeiske
• Geoffroy Vallee (ARM)
• George Bosilca (UTK)
• Hessam Mirsadeghi (UCX/nVidia)
• Jan (Sandia -ULT support in Open MPI)
• Jeff Squyres (Cisco)
• Jingyin Tang
• Joseph Schuchart
• Josh Hursey (IBM)
• 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
• William Zhang (AWS)
• Xin Zhao (nVidia)

---

Reminders

• Thursday HAN/Adapt wrapup decision.
  • Contact Geoff Paulsen if you need webex info

---

v4.1.x

• v4.1.5
  • Schedule: targeting ~6 mon (Nov?)
  • No driver on schedule yet.
• Potential CVE from 4 years ago issue in libevent.. but might not need to do anything.
  • Updated one company reported scanner didn't report anything.
  • Waiting on confirmation that patches to remove dead was enough.

v5.0.x

• Finally swapped out the PPRTE submodule pointer to point to v3.0 branch
• Did it without the SLURM fix, but there was some traction there.
• Posted Issue Open-MPI #10698 with about 13 issue, that will need
• NEED an mpirun manpage
• NEED mpirun --help
• Need all these fixes before PRTE ships v3.0.0
• Any of these issues complex?
• Testing mpirun command line options.
• Supposed to do automatic translations from old command line options to new options.
  • Are we planning to get rid of options at some point?
  • Not printing deprecated warning by default.
  • We've made new options (that are the new way), but if we're not encouraging people to go to them, why?
    • Can we even map old to new options one-to-one.
  • We "own" the szitso component and we could ditch new options, and only use old options if we want.
  • Before we force any change, we should get user's
  • Old ones had auto-completion.
  • If we have old options that are going to new options, weird that we don't print the messages.
  • v5.0 was supposed to be pretty disruptive, but if we go back and make it less disruptive, that's fine, but we are kinda saying that the old options are the way.
• Do we want HW_GUIDED in v5?
  • No discussion.
• It's be nice to make a test suite that assumes 2-4 Nodes with 4ppr or so... *
• Schedule:
  • PMIx and PRRTE changes coming at end of August.
    • PMIx v3.2 released.
    • Try to have bugfixes PRed end of August, to give time to iterate and merged.
  • Still using Critical v5.0.x Issues (https://github.com/open-mpi/ompi/projects/3) yesterday
• Docs
  • mpirun --help is OUT OF DATE.
    • Have to do this relatively quickly, before PRRTE releases.
    • Austen, Geoff and Tomi will be
    • REASON for this, is because mpirun command line is in PRRTE.
• mpirun manpage needs to be re-written.
  • Docs are online and can be updates asyncronously.
  • Jeff posted PR to document runpath vs rpath
    • Our configure checks some linker flags, but there might be default in linker or in system that really governs what happens.
• Symbol Pollution - Need an issue posted.
  • IS this a blocker? but need to clean up as much as possible.
  • Open-MPI community's perspective, our ABI is just MPI_Symbols
  • Still unfortunate. We need to clean up as much as possible.

Main branch

• HAN / Adapt runs.
  • Part 2 of discussion this Thursday.
  • Discuss making it default, with different tuned, tunings.
• Incompatibilities in User Level threading that Jan
  • What's the schedule for fixes to get into v5.0.x
  • Will try to get PRs in by end of August and then iterate.

Accelerator framework

• No discussion. Still some changes needed before we can retest/rereview.

Attomics PRs.

• Switching to builtin atomics,
  • 10613 - Prefered PR. GCC / Clang should have that.
  • Next step would be to refactor the atomics for post v5.0.
  • Waiting on Brian's review and CI fixes.
• Joseph will post some additional info thing in the ticket

MTT

Administrative tasks

• We're probably not getting together in person anytime soon.
  • So we'll send around a doodle to have time to talk about our rules.
  • Reflect the way we worked several years ago, but not really right now.
• 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.