- mpiwg-persistence - mailman3.cels.anl.gov

Re: [mpiwg-persistence] New meeting of MPI Forum Collective WG
by Julien.JAEGER＠CEA.FR 20 May '26

20 May '26

We are meeting today in 30 minutes. Julien Jaeger. ________________________________ De : Skjellum, Anthony <askjellum(a)tntech.edu> Envoyé : mercredi 22 avril 2026 15:49:40 À : mpiwg-coll(a)lists.mpi-forum.org; mpiwg-persistence(a)lists.mpi-forum.org Cc : Raffenetti, Ken; JAEGER Julien 606512; Dosanjh, Matthew Gurbachan Fugelso; Bengisu Elis Objet : Re: New meeting of MPI Forum Collective WG We are meeting today. 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>; Dosanjh, Matthew Gurbachan Fugelso <mdosanj(a)sandia.gov>; Bengisu Elis <bengisu.elis(a)tum.de> Subject: New meeting of MPI Forum Collective WG When: Wednesday, April 22, 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… Meeting ID: 858 9529 9644 Passcode: mpi4eva --- One tap mobile +13017158592,,85895299644#,,,,*2477715# US (Washington DC) +13052241968,,85895299644#,,,,*2477715# US Join instructions https://urldefense.us/v3/__https://tntech.zoom.us/meetings/85895299644/invi…

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Re: [mpiwg-persistence] New meeting of MPI Forum Collective WG
by Skjellum, Anthony 22 Apr '26

22 Apr '26

We are meeting today. 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>; Dosanjh, Matthew Gurbachan Fugelso <mdosanj(a)sandia.gov>; Bengisu Elis <bengisu.elis(a)tum.de> Subject: New meeting of MPI Forum Collective WG When: Wednesday, April 22, 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… Meeting ID: 858 9529 9644 Passcode: mpi4eva --- One tap mobile +13017158592,,85895299644#,,,,*2477715# US (Washington DC) +13052241968,,85895299644#,,,,*2477715# US Join instructions https://urldefense.us/v3/__https://tntech.zoom.us/meetings/85895299644/invi…

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Re: [mpiwg-persistence] New meeting of MPI Forum Collective WG
by Julien.JAEGER＠CEA.FR 25 Mar '26

25 Mar '26

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 ZjQcmQRYFpfptBannerStart This Message Is From an External Sender This message came from outside your organization. ZjQcmQRYFpfptBannerEnd 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… --- 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 --- One tap mobile +13017158592,,85895299644#,,,,*2477715# US (Washington DC) +13052241968,,85895299644#,,,,*2477715# US Join instructions https://urldefense.us/v3/__https://tntech.zoom.us/meetings/85895299644/invi… <https://urldefense.us/v3/__https://tntech.zoom.us/meetings/85895299644/invi…>

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[MPI-Forum] Collective WG meeting today
by Julien.JAEGER＠CEA.FR 25 Feb '26

25 Feb '26

Dear all, MPI Collective WG is meeting today in a bit more than one hour. Please join us to discuss the different topics listed below. 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… Meeting ID: 858 9529 9644 Passcode: mpi4eva --- One tap mobile +13017158592,,85895299644#,,,,*2477715# US (Washington DC) +13052241968,,85895299644#,,,,*2477715# US Join instructions https://urldefense.us/v3/__https://tntech.zoom.us/meetings/85895299644/invi… -------------------------------- AGENDA - FEB 25, 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… --- Running minutes will be captured and shared. Recording whenever possible :-)

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Re: [mpiwg-persistence] New meeting of MPI Forum Collective WG
by Skjellum, Anthony 11 Feb '26

11 Feb '26

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… --- 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… Meeting ID: 858 9529 9644 Passcode: mpi4eva --- One tap mobile +13017158592,,85895299644#,,,,*2477715# US (Washington DC) +13052241968,,85895299644#,,,,*2477715# US Join instructions https://urldefense.us/v3/__https://tntech.zoom.us/meetings/85895299644/invi…

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New meeting of MPI Forum Collective WG
by Skjellum, Anthony 11 Feb '26

11 Feb '26

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… Meeting ID: 858 9529 9644 Passcode: mpi4eva --- One tap mobile +13017158592,,85895299644#,,,,*2477715# US (Washington DC) +13052241968,,85895299644#,,,,*2477715# US Join instructions https://urldefense.us/v3/__https://tntech.zoom.us/meetings/85895299644/invi…

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Canceled: New meeting of MPI Forum Collective WG
by Skjellum, Anthony 11 Feb '26

11 Feb '26

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… Meeting ID: 858 9529 9644 Passcode: mpi4eva --- One tap mobile +13017158592,,85895299644#,,,,*2477715# US (Washington DC) +13052241968,,85895299644#,,,,*2477715# US Join instructions https://urldefense.us/v3/__https://tntech.zoom.us/meetings/85895299644/invi…

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New meeting of MPI Forum Collective WG
by Skjellum, Anthony 11 Feb '26

11 Feb '26

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… Meeting ID: 858 9529 9644 Passcode: mpi4eva --- One tap mobile +13017158592,,85895299644#,,,,*2477715# US (Washington DC) +13052241968,,85895299644#,,,,*2477715# US Join instructions https://urldefense.us/v3/__https://tntech.zoom.us/meetings/85895299644/invi…

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New meeting of MPI Forum Collective WG
by Skjellum, Anthony 06 Feb '26

06 Feb '26

All: Julien Jaeger and I are resuming. Agenda forthcoming. ZOOM INFO TBD, because it will be a recurring meeting with recording.

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Canceled: MPI Persistent/HACC/Partitioned WGs Weekly Meeting---ZOOM NOT TEAMS
by Skjellum, Anthony 01 Nov '23

01 Nov '23

NOTE: Zoom, not TEAMS, see below. As of May 12, 2021, WG materials being archived here https://drive.google.com/drive/folders/1dxWKDUxvzol5PQfMET2bwiiNs7rZfimX?us… Weekly: https://tennessee.zoom.us/meeting/tJIsfuqtrDsiE9S0ICfXsuy-47_0ZqWvG71z/ics?… Join from PC, Mac, Linux, iOS or Android: https://tennessee.zoom.us/j/96193520890?pwd=T3k1NkFRQ3BJaUFkeXFQcmtYTlRHQT09 Password: 399650 ---- Hi there, Anthony Skjellum is inviting you to a scheduled Zoom meeting. Topic: Partition/HACC/etc Working Groups Time: Apr 6, 2022 10:00 AM Eastern Time (US and Canada) Every week on Wed, until Jan 25, 2023, 43 occurrence(s) Apr 6, 2022 10:00 AM Apr 13, 2022 10:00 AM Apr 20, 2022 10:00 AM Apr 27, 2022 10:00 AM May 4, 2022 10:00 AM May 11, 2022 10:00 AM May 18, 2022 10:00 AM May 25, 2022 10:00 AM Jun 1, 2022 10:00 AM Jun 8, 2022 10:00 AM Jun 15, 2022 10:00 AM Jun 22, 2022 10:00 AM Jun 29, 2022 10:00 AM Jul 6, 2022 10:00 AM Jul 13, 2022 10:00 AM Jul 20, 2022 10:00 AM Jul 27, 2022 10:00 AM Aug 3, 2022 10:00 AM Aug 10, 2022 10:00 AM Aug 17, 2022 10:00 AM Aug 24, 2022 10:00 AM Aug 31, 2022 10:00 AM Sep 7, 2022 10:00 AM Sep 14, 2022 10:00 AM Sep 21, 2022 10:00 AM Sep 28, 2022 10:00 AM Oct 5, 2022 10:00 AM Oct 12, 2022 10:00 AM Oct 19, 2022 10:00 AM Oct 26, 2022 10:00 AM Nov 2, 2022 10:00 AM Nov 9, 2022 10:00 AM Nov 16, 2022 10:00 AM Nov 23, 2022 10:00 AM Nov 30, 2022 10:00 AM Dec 7, 2022 10:00 AM Dec 14, 2022 10:00 AM Dec 21, 2022 10:00 AM Dec 28, 2022 10:00 AM Jan 4, 2023 10:00 AM Jan 11, 2023 10:00 AM Jan 18, 2023 10:00 AM Jan 25, 2023 10:00 AM Please download and import the following iCalendar (.ics) files to your calendar system. Weekly: https://tennessee.zoom.us/meeting/tJIsfuqtrDsiE9S0ICfXsuy-47_0ZqWvG71z/ics?… Join from PC, Mac, Linux, iOS or Android: https://tennessee.zoom.us/j/96193520890?pwd=T3k1NkFRQ3BJaUFkeXFQcmtYTlRHQT09 Password: 399650 Or iPhone one-tap (US Toll): +16468769923,96193520890# or +13017158592,96193520890# Or Telephone: Dial: +1 646 876 9923 (US Toll) +1 301 715 8592 (US Toll) +1 312 626 6799 (US Toll) +1 669 900 6833 (US Toll) +1 253 215 8782 (US Toll) +1 346 248 7799 (US Toll) Meeting ID: 961 9352 0890 International numbers available: https://tennessee.zoom.us/u/adIMYx6Jko Or an H.323/SIP room system: H.323: 162.255.37.11 (US West) or 162.255.36.11 (US East) Meeting ID: 961 9352 0890 Password: 399650 SIP: 96193520890(a)zoomcrc.com Password: 399650 <https://teams.microsoft.com/meetingOptions/?organizerId=e544ff3d-a271-4377-…> Microsoft Teams meeting Join on your computer, mobile app or room device Click here to join the meeting<https://teams.microsoft.com/l/meetup-join/19%3ameeting_ZTZlNjdhMGItZjM4Mi00…> Meeting ID: 251 308 468 346 Passcode: jqEhgw Download Teams<https://www.microsoft.com/en-us/microsoft-teams/download-app> | Join on the web<https://www.microsoft.com/microsoft-teams/join-a-meeting> Learn More<https://aka.ms/JoinTeamsMeeting> | Meeting options<https://teams.microsoft.com/meetingOptions/?organizerId=e544ff3d-a271-4377-…> Microsoft Teams meeting Join on your computer, mobile app or room device Click here to join the meeting<https://teams.microsoft.com/l/meetup-join/19%3ameeting_ZTZlNjdhMGItZjM4Mi00…> Meeting ID: 251 308 468 346 Passcode: jqEhgw Download Teams<https://www.microsoft.com/en-us/microsoft-teams/download-app> | Join on the web<https://www.microsoft.com/microsoft-teams/join-a-meeting> Or call in (audio only) +1 865-770-3798,,528403583#<tel:+18657703798,,528403583#> United States, Knoxville Phone Conference ID: 528 403 583# Find a local number<https://dialin.teams.microsoft.com/9264bf30-429c-4e7c-910b-e53ec47dbcf1?id=…> | Reset PIN<https://dialin.teams.microsoft.com/usp/pstnconferencing> Learn More<https://aka.ms/JoinTeamsMeeting> | Meeting options<https://teams.microsoft.com/meetingOptions/?organizerId=e544ff3d-a271-4377-…> ________________________________________________________________________________ ________________________________________________________________________________ Microsoft Teams meeting Join on your computer, mobile app or room device Click here to join the meeting<https://teams.microsoft.com/l/meetup-join/19%3ameeting_ZTZlNjdhMGItZjM4Mi00…> Meeting ID: 251 308 468 346 Passcode: jqEhgw Download Teams<https://www.microsoft.com/en-us/microsoft-teams/download-app> | Join on the web<https://www.microsoft.com/microsoft-teams/join-a-meeting> Learn More<https://aka.ms/JoinTeamsMeeting> | Meeting options<https://teams.microsoft.com/meetingOptions/?organizerId=e544ff3d-a271-4377-…> ________________________________________________________________________________

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