Dear all,
As Tony and I are not available, today's meeting is canceled.
We will meet in two weeks.
If you have a specific subject you want to bring up, discuss or present in a coming meeting, do not hesitate to send a email to Tony and I so we can update the running agenda accordingly.
Best regards,
Julien Jaeger.
________________________________
De : mpiwg-persistence <mpiwg-persistence-bounces(a)lists.mpi-forum.org> de la part de Skjellum, Anthony via mpiwg-persistence <mpiwg-persistence(a)lists.mpi-forum.org>
Envoyé : mercredi 11 février 2026 15:47:20
À : mpiwg-coll(a)lists.mpi-forum.org; mpiwg-persistence(a)lists.mpi-forum.org
Objet : Re: [mpiwg-persistence] New meeting of MPI Forum Collective WG
Agenda for today (this will be on-going, and we will add to/resolve over time) AGENDA - FEB 11, 2026 Reconstitution - subsume partitioned, persistent, point-to-point and collective discussions Items for good of the order form participants not
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Agenda for today (this will be on-going, and we will add to/resolve over time)
AGENDA - FEB 11, 2026
1.
Reconstitution - subsume partitioned, persistent, point-to-point and collective discussions
2.
Items for good of the order form participants not covered below
3.
Align with hybrid/streams work in pt2pt scope
BIG PICTURE AGENDA FOR GROUP, NOT EVERYTHING FOR FIRST MEETING.
1.
Discuss partitioned collective status and plans
*
Prior papers
*
Issues with synchronizing collectives
*
Prototypes
*
New ideas with buffer management
*
Path to standardization
2.
Corollary issues with persistent collectives
*
Non-blocking init/free - not allowed
3.
Related issue - handoff of control of user state
*
Handling the registration and registration of index vectors and data pointers
*
C++ way
*
C (and Fortran) way with registration callbacks at free
*
Removing ambiguity in the “zero time use case” and whenever a free is allowed to lazy in MPI that holds user state (so it can be released before MPI_Finalize).
1.
Managing unexpected state in partitioned (and maybe persistent) operations
*
Elimination of PBUF_PREPARE in all partitioned considerations
*
Considering to “generalize” point-to-point partitioned to enable a) persistence better; b) buffer pools
1.
Streaming collectives
2.
Other things we “owe” short term
*
MPI_Parrived_any ticket — very useful with current partitioned point-to-point
3.
Document enhancements
*
Revamping the collective chapter front-to-back (ask Puri if he had some input on prior tries at this?)
*
Making uniform the presentation of blocking, nonblocking, persistent, and future (partitioned) collective
*
Front matter needs a look for terms, definitions…
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Running minutes will be captured and shared. Recording whenever possible :-)
Anthony Skjellum, PhD
Professor of Computer Science
Director, Advanced Scalable Computing,
Extreme Networks & Data (ASCEND) Center
Tennessee Technological University
email: askjellum(a)tntech.edu
cell: +1-205-807-4968
________________________________
From: Skjellum, Anthony
Sent: Friday, February 6, 2026 10:26 AM
To: mpiwg-coll(a)lists.mpi-forum.org <mpiwg-coll(a)lists.mpi-forum.org>; mpiwg-persistence(a)lists.mpi-forum.org <mpiwg-persistence(a)lists.mpi-forum.org>
Cc: Raffenetti, Ken <raffenet(a)anl.gov>; Julien.JAEGER(a)CEA.FR <Julien.JAEGER(a)CEA.FR>
Subject: New meeting of MPI Forum Collective WG
When: Wednesday, February 11, 2026 9:00 AM-10:00 AM.
Where: Via Zoom
All: Julien Jaeger and I are resuming. Agenda forthcoming. Will be every other week, to dovetail with RMA WG.
Tony Skjellum (TNTECH) is inviting you to a scheduled Zoom meeting.
Topic: MPI WG Collective (Persistent too)
Time: This is a recurring meeting Meet anytime
Join Zoom Meeting
https://urldefense.us/v3/__https://tntech.zoom.us/j/85895299644?pwd=UVeoehU… <https://urldefense.us/v3/__https://tntech.zoom.us/j/85895299644?pwd=UVeoehU…>
Meeting ID: 858 9529 9644
Passcode: mpi4eva
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