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June 2025 MPI Forum Meeting
by Wes Bland 04 Jun '25

04 Jun '25

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EuroMPI/USA October 1-3, 2025: Deadline Extension
by Joseph Schuchart 21 May '25

21 May '25

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Re: [Mpi-forum] MPI 5.0 Final Ratification Meeting Release Candidate Doc
by Wes Bland 09 May '25

09 May '25

For some reason, the URL in my email for the RC doc is getting linked incorrectly (it’s missing the “2” at the end. If you’re getting 404 errors, you might need to copy and paste the link directly. https://urldefense.us/v3/__https://github.com/mpi-forum/mpi-forum.github.io… Thanks, Wes > On May 9, 2025, at 10:54 AM, Wes Bland <WORK(a)WESBLAND.COM> wrote: > > Hi all, > > A couple of notes about the rest of the MPI 5.0 cycle. > > MPI 5.0 RC2 > > The release candidate doc is now available for the final ratification meeting next month. Huge thanks as always to Bill for putting in a ton of work to get this ready! You can find the doc here: https://urldefense.us/v3/__https://github.com/mpi-forum/mpi-forum.github.io… <https://urldefense.us/v3/__https://github.com/mpi-forum/mpi-forum.github.io… > > > The vast majority of the changes from RC1 to RC2 happened during the last meeting (thanks again to everyone for helping!), but there were a handful that came after that. You can find the full list of changes on the agenda page: https://urldefense.us/v3/__https://www.mpi-forum.org/meetings/2025/06/agend… > > Anything listed as a "first and only” vote is something we read at the last meeting and won’t read again unless someone has a specific concern. Those will be voted on using our normal rules, with one vote instead of two (like an errata). > > Anything listed as a no “no vote” is something that changed after the last meeting. Please pay extra attention to these to make sure you don’t see any issues. We’ll read them during the June meeting as well. Links to all of the issues and pull requests are available on the agenda page above. > > All of the changes scheduled for votes and plenaries have already been merged into the RC2 doc linked above so we get a complete doc ready to be reviewed. You may recall that we do it this way only for the FRM to make it easier on ourselves (and Bill) to be able to review the entire doc. If any of the votes fails, we’ll need to back that change out of the PDF and take a quick look at a new RC3 doc to make sure everything looks ok. > > MPI 5.0 Officers > > So far the only people nominated for officers for the next cycle are the current officers. We still have until May 21 to nominate new folks if anyone is interested. Please email the list if you’d like to be added (or nominate someone else). > > Meeting Registration > > If you haven’t already registered for the meeting, please do so here: https://urldefense.us/v3/__https://forms.gle/gWZHPWwsZAEGGT8B9__;!!G_uCfscf… > > I’ve just updated the website with all the attendees that have registered so far here: https://urldefense.us/v3/__https://www.mpi-forum.org/meetings/2025/06/atten… > > Call for Plenaries / Votes > > If anyone still has anything that they’d like to discuss at the upcoming meeting, please send an email to the list to let everyone know and we can put it on the agenda. The first part of the meeting will be taken up with completing MPI 5.0, but we should have plenty of time to discuss future topics after that. Let’s get back to technical discussions! > > > > If there’s any questions from any of this, or you think I’ve missed something, please let me know. > > Thanks, > Wes

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MPI 5.0 Final Ratification Meeting Release Candidate Doc
by Wes Bland 09 May '25

09 May '25

Hi all, A couple of notes about the rest of the MPI 5.0 cycle. MPI 5.0 RC2 The release candidate doc is now available for the final ratification meeting next month. Huge thanks as always to Bill for putting in a ton of work to get this ready! You can find the doc here: https://urldefense.us/v3/__https://github.com/mpi-forum/mpi-forum.github.io… <https://urldefense.us/v3/__https://github.com/mpi-forum/mpi-forum.github.io… > The vast majority of the changes from RC1 to RC2 happened during the last meeting (thanks again to everyone for helping!), but there were a handful that came after that. You can find the full list of changes on the agenda page: https://urldefense.us/v3/__https://www.mpi-forum.org/meetings/2025/06/agend… Anything listed as a "first and only” vote is something we read at the last meeting and won’t read again unless someone has a specific concern. Those will be voted on using our normal rules, with one vote instead of two (like an errata). Anything listed as a no “no vote” is something that changed after the last meeting. Please pay extra attention to these to make sure you don’t see any issues. We’ll read them during the June meeting as well. Links to all of the issues and pull requests are available on the agenda page above. All of the changes scheduled for votes and plenaries have already been merged into the RC2 doc linked above so we get a complete doc ready to be reviewed. You may recall that we do it this way only for the FRM to make it easier on ourselves (and Bill) to be able to review the entire doc. If any of the votes fails, we’ll need to back that change out of the PDF and take a quick look at a new RC3 doc to make sure everything looks ok. MPI 5.0 Officers So far the only people nominated for officers for the next cycle are the current officers. We still have until May 21 to nominate new folks if anyone is interested. Please email the list if you’d like to be added (or nominate someone else). Meeting Registration If you haven’t already registered for the meeting, please do so here: https://urldefense.us/v3/__https://forms.gle/gWZHPWwsZAEGGT8B9__;!!G_uCfscf… I’ve just updated the website with all the attendees that have registered so far here: https://urldefense.us/v3/__https://www.mpi-forum.org/meetings/2025/06/atten… Call for Plenaries / Votes If anyone still has anything that they’d like to discuss at the upcoming meeting, please send an email to the list to let everyone know and we can put it on the agenda. The first part of the meeting will be taken up with completing MPI 5.0, but we should have plenty of time to discuss future topics after that. Let’s get back to technical discussions! If there’s any questions from any of this, or you think I’ve missed something, please let me know. Thanks, Wes

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Nomination for MPI Forum Secretary
by Gropp, William D 07 May '25

07 May '25

I am nominating Wes Bland as MPI Forum Secretary. Bill William Gropp Director, NCSA Grainger Distinguished Chair in Engineering Siebel School of Computing and Data Science University of Illinois Urbana-Champaign https://urldefense.us/v3/__https://wgropp.cs.illinois.edu__;!!G_uCfscf7eWS!… <https://urldefense.us/v3/__https://wgropp.cs.illinois.edu/__;!!G_uCfscf7eWS… >

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Post MPI 5.0 Officer Nominations
by Wes Bland 07 May '25

07 May '25

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Editor fixes to document
by Gropp, William D 08 Apr '25

08 Apr '25

Hi everyone, I made a careful review of the mpi-50-rc document and identified a number of minor editor-level issues. I’ve created issues for them, along with pull requests to address them. They are 981<https://urldefense.us/v3/__https://github.com/mpi-forum/mpi-issues/issues/9… > Many minor formatting fixes 982<https://urldefense.us/v3/__https://github.com/mpi-forum/mpi-issues/issues/9… > Several minor grammar fixes 983<https://urldefense.us/v3/__https://github.com/mpi-forum/mpi-issues/issues/9… > Fix improper use of indexing macro 984<https://urldefense.us/v3/__https://github.com/mpi-forum/mpi-issues/issues/9… > Fix misspelled “MPI_COMMM_SELF” in example 985<https://urldefense.us/v3/__https://github.com/mpi-forum/mpi-issues/issues/9… > Fix {WAIT|TEST}{ANY|ALL|SOME} to be correct and consistent for the case of a single request 988<https://urldefense.us/v3/__https://github.com/mpi-forum/mpi-issues/issues/9… > Minor fixes for the code check step Note that in some cases, I’ve marked an issue as “Deferred”. That means that I did not provide a fix for the issue. These were not fixed because both the fix was not easy and the problem was not serious enough to hold up the standard. I will carry these issues forward to the next MPI version. The fixes have been merged with the current rc to make it easier to review them. They used relatively fine-grained commits, so it should be easy to revert individual issues if needed. Please review and ask about any you have questions about. Bill William Gropp Director, NCSA Grainger Distinguished Chair in Engineering Siebel School of Computing and Data Science University of Illinois Urbana-Champaign https://urldefense.us/v3/__https://wgropp.cs.illinois.edu__;!!G_uCfscf7eWS!… <https://urldefense.us/v3/__https://wgropp.cs.illinois.edu/__;!!G_uCfscf7eWS… >

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June 2025 Meeting
by Wes Bland 07 Apr '25

07 Apr '25

Hi all, The registration page for the June 2025 FRM meeting is now available here: https://urldefense.us/v3/__https://forms.gle/gWZHPWwsZAEGGT8B9__;!!G_uCfscf… Please fill that out soon so we can start figuring out quorum for the meeting from June 4 - 6. If you have any requests for readings, votes, plenaries, or discussions, please send those to the mailing list now. The deadline for announcements is May 21. You can find the current list of announced items here: https://urldefense.us/v3/__https://www.mpi-forum.org/meetings/2025/06/agend… . It’s pretty long of course, but everything under “first and only” was read at the March meeting and will only require a single vote to confirm the changes that happened at the RCM. Those items under no “no votes” are changes that happened after the RCM and need a little more scrutiny. We still don’t have any nominations for the officer positions for post MPI 5.0. If you’d like to nominate anyone, please make sure they’re ok with that and then send an email to the mailing list. We probably should have some officers for the next go around of MPI. 😀 Thanks for all the work everyone’s been doing to get MPI 5.0 out the door. We’re very close! Thanks, Wes

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Re: [Mpi-forum] MPI_Psend/recv_init_c Resolution
by Skjellum, Anthony 21 Mar '25

21 Mar '25

I can respond next Monday when back in office ! Anthony Skjellum, PhD 205-807-4968 On Mar 21, 2025, at 4:31 PM, Wes Bland via mpi-forum <mpi-forum(a)lists.mpi-forum.org> wrote: Hi folks, During the meeting in Stuttgart, we discovered some weirdness where we thought MPI_Psend_init_c and MPI_Precv_init_c should have been present in MPI 4. 1, but weren’t. Failing to find any reason why that was true, we assumed it was ZjQcmQRYFpfptBannerStart This Message Is From an External Sender This message came from outside your organization. ZjQcmQRYFpfptBannerEnd Hi folks, During the meeting in Stuttgart, we discovered some weirdness where we thought MPI_Psend_init_c and MPI_Precv_init_c should have been present in MPI 4.1, but weren’t. Failing to find any reason why that was true, we assumed it was a problem with a Git merge and I replayed those changes in PRs 1108<https://urldefense.us/v3/__https://github.com/mpi-forum/mpi-standard/pull/1…> and 1110<https://urldefense.us/v3/__https://github.com/mpi-forum/mpi-standard/pull/1…>. Yesterday, Ken found the place where we had discussed these specific topics in October, 2023 and decided not to put them in MPI 4.1 here<https://urldefense.us/v3/__https://github.com/mpi-forum/mpi-issues/issues/7…>. At that time, we decided to push them out of 4.1 and address them later (which we never circled back to do) and removed the changes here<https://urldefense.us/v3/__https://github.com/mpi-forum/mpi-standard/pull/9…>. Now that we know what happened there, I’m going to revert the PRs to put these changes back in and put us back to the situation we were in before the RCM and put this back in the Forum’s queue to discuss at some point post-MPI 5.0. You can find the PR for that here<https://urldefense.us/v3/__https://github.com/mpi-forum/mpi-standard/pull/1…>. I’ll leave that up for a few days before proposing it gets merged just so everyone has a chance to take a look. Sorry about all the mess. Hopefully we’re all back to the point that we previously agreed on. Thanks, Wes _______________________________________________ mpi-forum mailing list mpi-forum(a)lists.mpi-forum.org https://urldefense.us/v3/__https://lists.mpi-forum.org/mailman/listinfo/mpi…

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MPI_Psend/recv_init_c Resolution
by Wes Bland 21 Mar '25

21 Mar '25

Hi folks, During the meeting in Stuttgart, we discovered some weirdness where we thought MPI_Psend_init_c and MPI_Precv_init_c should have been present in MPI 4.1, but weren’t. Failing to find any reason why that was true, we assumed it was a problem with a Git merge and I replayed those changes in PRs 1108 <https://urldefense.us/v3/__https://github.com/mpi-forum/mpi-standard/pull/1… > and 1110 <https://urldefense.us/v3/__https://github.com/mpi-forum/mpi-standard/pull/1… >. Yesterday, Ken found the place where we had discussed these specific topics in October, 2023 and decided not to put them in MPI 4.1 here <https://urldefense.us/v3/__https://github.com/mpi-forum/mpi-issues/issues/7… >. At that time, we decided to push them out of 4.1 and address them later (which we never circled back to do) and removed the changes here <https://urldefense.us/v3/__https://github.com/mpi-forum/mpi-standard/pull/9… >. Now that we know what happened there, I’m going to revert the PRs to put these changes back in and put us back to the situation we were in before the RCM and put this back in the Forum’s queue to discuss at some point post-MPI 5.0. You can find the PR for that here <https://urldefense.us/v3/__https://github.com/mpi-forum/mpi-standard/pull/1… >. I’ll leave that up for a few days before proposing it gets merged just so everyone has a chance to take a look. Sorry about all the mess. Hopefully we’re all back to the point that we previously agreed on. Thanks, Wes

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