[mpiwg-hybridpm] Meeting for June 12, 2024

Wed Jun 12 19:39:56 CDT 2024

Jim, thank you … I will talk to Ryan.
Let’s hold July 17 for now and he and I will decide if
I can share time on July 3.

The unprogrammed weeks we might wish to hold the
Next discussion on partition collectives on July 10.
And 24.

Tony

Anthony Skjellum, PhD
205-807-4968

On Jun 12, 2024, at 6:53 PM, Jim Dinan via mpiwg-hybridpm <mpiwg-hybridpm at lists.mpi-forum.org> wrote:

Hi Tony, Apologies for not catching this sooner. There was no WG meeting today. We moved to biweekly meetings because of reduced activity after the last spec release. Our next meeting is supposed to be next Wednesday; however, it lands on the
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Hi Tony,

Apologies for not catching this sooner. There was no WG meeting today. We moved to biweekly meetings because of reduced activity after the last spec release. Our next meeting is supposed to be next Wednesday; however, it lands on the Juneteenth holiday and I expect many folks from the US will be off work. The next open meeting is July 17, but your topics might also fit in well with Ryan's on July 3rd if you want to coordinate. Please let me know when you'd like to cover these topics. Full meeting schedule is posted here: https://urldefense.us/v3/__https://github.com/mpiwg-hybrid/hybrid-issues/wiki__;!!G_uCfscf7eWS!blJxdnXgTjq8QaGu6AvtW6n4LyAxdc4-x3iIIip37mdwW9pJSkJlI_qPsQrRvKzLo6w-3I6t2hBCq3ekR7FW6CqGKGLEapGjj6aQ$ <https://urldefense.us/v3/__https://github.com/mpiwg-hybrid/hybrid-issues/wiki__;!!G_uCfscf7eWS!c5CBn_SUKJL1lbGJXBAkDTIVDF9-2hnDwKce9siwV1BkqiwI8OEEkiKKF9xnbxL7eJYSvkjLTD2G3BSCy_aFCMXY-zftkEVKv-A$>

Best,
 ~Jim.

On Wed, Jun 5, 2024 at 10:32 AM Skjellum, Anthony via mpiwg-hybridpm <mpiwg-hybridpm at lists.mpi-forum.org<mailto:mpiwg-hybridpm at lists.mpi-forum.org>> wrote:
Jim, and others, I would like to discuss these topics (frozen proposals from MPI-4 and 4. 1) at the next meeting on June 12: Pbuf_prepare, Parrived_any I would like to see if we can get agreement on these and push into MPI-4. 2 or the next increment
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Jim, and others, I would like to discuss these topics (frozen proposals from MPI-4 and 4.1) at the next meeting on June 12:

Pbuf_prepare, Parrived_any

I would like to see if we can get agreement on these and push into MPI-4.2 or the next increment after that, rather than MPI-5.
I am sure this will take more than one discussion, since we didn't get these through before.

Note: They are both marked for MPI-5 currently, presumably because we don't have a broad opening for MPI-4.2, and we haven't agreed on an MPI-4.3.

Here are the tickets/issues:

https://urldefense.us/v3/__https://github.com/mpi-forum/mpi-issues/issues/537__;!!G_uCfscf7eWS!blJxdnXgTjq8QaGu6AvtW6n4LyAxdc4-x3iIIip37mdwW9pJSkJlI_qPsQrRvKzLo6w-3I6t2hBCq3ekR7FW6CqGKGLEaqWyuSFM$ <https://urldefense.us/v3/__https://github.com/mpi-forum/mpi-issues/issues/537__;!!G_uCfscf7eWS!ZyZVjdWV6k41axZ3KnxwyMryXZZVlkJeaQidg7_lF3bDw-Fk2VzEaU_IcX7dZ5Cv8ZqLwEhN8CC1BqwKhKj1hFpCxBMDLcELRBJq$> (PR:https://urldefense.us/v3/__https://github.com/mpi-forum/mpi-standard/pull/718__;!!G_uCfscf7eWS!blJxdnXgTjq8QaGu6AvtW6n4LyAxdc4-x3iIIip37mdwW9pJSkJlI_qPsQrRvKzLo6w-3I6t2hBCq3ekR7FW6CqGKGLEaqUwnmz5$ <https://urldefense.us/v3/__https://github.com/mpi-forum/mpi-standard/pull/718__;!!G_uCfscf7eWS!ZyZVjdWV6k41axZ3KnxwyMryXZZVlkJeaQidg7_lF3bDw-Fk2VzEaU_IcX7dZ5Cv8ZqLwEhN8CC1BqwKhKj1hFpCxBMDLYShSrSD$> ) – Ryan prepared the PR long ago.
[https://urldefense.us/v3/__https://opengraph.githubassets.com/6ac106e7db39c1db8f8d04107bddc2cd8f9e0b93935e59eb57244db11af8290a/mpi-forum/mpi-issues/issues/537__;!!G_uCfscf7eWS!blJxdnXgTjq8QaGu6AvtW6n4LyAxdc4-x3iIIip37mdwW9pJSkJlI_qPsQrRvKzLo6w-3I6t2hBCq3ekR7FW6CqGKGLEajEujrL1$ ]<https://urldefense.us/v3/__https://github.com/mpi-forum/mpi-issues/issues/537__;!!G_uCfscf7eWS!ZyZVjdWV6k41axZ3KnxwyMryXZZVlkJeaQidg7_lF3bDw-Fk2VzEaU_IcX7dZ5Cv8ZqLwEhN8CC1BqwKhKj1hFpCxBMDLcELRBJq$>
MPI_Parrived_any API as an addition for Partititioned Communication · Issue #537 · mpi-forum/mpi-issues<https://urldefense.us/v3/__https://github.com/mpi-forum/mpi-issues/issues/537__;!!G_uCfscf7eWS!ZyZVjdWV6k41axZ3KnxwyMryXZZVlkJeaQidg7_lF3bDw-Fk2VzEaU_IcX7dZ5Cv8ZqLwEhN8CC1BqwKhKj1hFpCxBMDLcELRBJq$>
Problem The ability to take the next available partition is not supported in the current MPI-4.0 API. Proposal The API: MPI_Parrived_any(MPI_Request prequest, int *partition, int *flag); /* C inter...
github.com<https://urldefense.us/v3/__http://github.com__;!!G_uCfscf7eWS!c5CBn_SUKJL1lbGJXBAkDTIVDF9-2hnDwKce9siwV1BkqiwI8OEEkiKKF9xnbxL7eJYSvkjLTD2G3BSCy_aFCMXY-zftAYJ-LYs$>

https://urldefense.us/v3/__https://github.com/mpi-forum/mpi-issues/issues/302__;!!G_uCfscf7eWS!blJxdnXgTjq8QaGu6AvtW6n4LyAxdc4-x3iIIip37mdwW9pJSkJlI_qPsQrRvKzLo6w-3I6t2hBCq3ekR7FW6CqGKGLEavq5B5Qv$ <https://urldefense.us/v3/__https://github.com/mpi-forum/mpi-issues/issues/302__;!!G_uCfscf7eWS!ZyZVjdWV6k41axZ3KnxwyMryXZZVlkJeaQidg7_lF3bDw-Fk2VzEaU_IcX7dZ5Cv8ZqLwEhN8CC1BqwKhKj1hFpCxBMDLUxIuITZ$>  (with outdated PR:  https://urldefense.us/v3/__https://github.com/mpi-forum/mpi-standard/pull/264__;!!G_uCfscf7eWS!blJxdnXgTjq8QaGu6AvtW6n4LyAxdc4-x3iIIip37mdwW9pJSkJlI_qPsQrRvKzLo6w-3I6t2hBCq3ekR7FW6CqGKGLEaixMgBXh$ <https://urldefense.us/v3/__https://github.com/mpi-forum/mpi-standard/pull/264__;!!G_uCfscf7eWS!ZyZVjdWV6k41axZ3KnxwyMryXZZVlkJeaQidg7_lF3bDw-Fk2VzEaU_IcX7dZ5Cv8ZqLwEhN8CC1BqwKhKj1hFpCxBMDLXOQpejn$>  ) – Ryan prepared the PR long ago.

My apologies for long delays in follow up.  We really need to resolve these issues as they impact both point-to-point partitioned and potential collective partitioned comms.

I would encourage additional commentary on the issues; Patrick has made new, relevant observations about the dual roles of Pbuf_prepare recently on ticket#302, for example.

Thank you all,
Tony

PS After that, I really do intend to hold a collective WG meeting to discuss partitioned collective ops 🙂 on June 19, or July 3 or 10, depending
what works in tandem with the Hybrid calendar.

Anthony Skjellum, PhD
Professor of Computer Science
Tennessee Technological University
email: askjellum at tntech.edu<mailto:askjellum at tntech.edu>
cell: +1-205-807-4968

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