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Virtual MPI Forum Meeting Tomorrow (Dec. 14th, 10am US CT)
by Martin Schulz 13 Dec '22

13 Dec '22

Hi all, As discussed last week, we will have one more MIP virtual forum meeting this year, tomorrow (Dec. 14th at 10am US CT) – the access link is, as always, available via the MPI Forum website. Jim will talk about “Allocator kind info”. The meetings for next year (voting and non-voting), which we decided on on Friday, are also listed on the forum website. Thanks, Martin -- Prof. Dr. Martin Schulz, Chair of Computer Architecture and Parallel Systems Department of Informatics, TU-Munich, Boltzmannstraße 3, D-85748 Garching Member of the Board of Directors at the Leibniz Supercomputing Centre (LRZ) Email: schulzm(a)in.tum.de

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ABI working group is live
by Jeff Hammond 09 Dec '22

09 Dec '22

The MPI ABI workgroup was approved. You can sign up for the mailing list now: https://lists.mpi-forum.org/mailman/listinfo/mpiwg-abi. If you want access to the GitHub group (https://github.com/mpiwg-abi/) send me your GitHub username. If you want access to the Slack channel, DM me on Slack. If you are not on Slack already, send me your email address. Jeff On Wed, Nov 16, 2022 at 9:54 AM Jeff Hammond <jeff.science(a)gmail.com> wrote: > I don't know what we do to create new working groups with the post-COVID > rules, but I would like to create and chair a WG focused on ABI > standardization. > > There is strong support for this effort in many user communities, > including developers and maintainers of Spack, mpi4py, Julia MPI (MPI.jl), > Rust MPI (rsmpi), PETSc and NVHPC SDK, to name a few. There are even a few > implementers who have expressed support, but I won't name them for their > own protection. > > The problem is so exasperating for our users that there are at least two > different projects devoted to mitigating ABI problems (not including shims > built in to the aforementioned MPI wrappers): > > https://github.com/cea-hpc/wi4mpi > https://github.com/eschnett/MPItrampoline > > I've written about this a bit already, for those who are interested. More > material will be forthcoming once I have time for more experiments. > > https://github.com/jeffhammond/blog/blob/main/MPI_Needs_ABI.md > https://github.com/jeffhammond/blog/blob/main/MPI_Needs_ABI_Part_2.md > https://github.com/jeffhammond/blog/blob/main/MPI_Needs_ABI_Part_3.md > https://github.com/jeffhammond/blog/blob/main/MPI_Needs_ABI_Part_4.md > > I understand this is a controversial topic, particularly for > implementers. I hope that we can proceed objectively. > > Thanks, > > Jeff > > -- > Jeff Hammond > jeff.science(a)gmail.com > http://jeffhammond.github.io/ > -- Jeff Hammond jeff.science(a)gmail.com http://jeffhammond.github.io/

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Re: [Mpi-forum] no-no-votes for the readings yesterday - Re: December Meeting Draft Agenda Posted
by Wes Bland 07 Dec '22

07 Dec '22

Thanks Rolf, After talking to Martin last night, I think it makes the most sense to vote on the errata, first, and second ballots today. Then we’ll do the no-no votes tomorrow. I’m sure we’ll add at least one more no-no based on the discussion today. You can find the full list of ballots on the voting page: https://www.mpi-forum.org/meetings/2022/12/votes Thanks, Wes > On Dec 7, 2022, at 6:33 AM, Rolf Rabenseifner via mpi-forum <mpi-forum(a)lists.mpi-forum.org> wrote: > > Dear Wesley and Martin, > > the following small no-no-vote changes for/from the readings yesterday should be read and voted: > > > Issue 493 and PR 753 (on new progress section): > > https://github.com/mpi-forum/mpi-standard/pull/753/files/dc50cc9c6b40eb7328… > > > Issue 641 and PR 752 (on Annex A.2): > > https://github.com/mpi-forum/mpi-standard/pull/752/files/9141595df073078c60… > and > only inverting the sequence Wait / test(true) / test(false): > https://github.com/mpi-forum/mpi-standard/pull/752/files/af2b14e7b3c61541eb… > and > https://github.com/mpi-forum/mpi-standard/files/10175926/mpi41-report_Issue… > > > Issue 605 and PR 746 (Titles for topology examples) > > https://github.com/mpi-forum/mpi-standard/pull/746/commits/74936f003a4cb38f… > > > With those, I expect that my readings are done. > > > Best reagrds > Rolf > > > -- > Dr. Rolf Rabenseifner . . . . . . . . . .. . . rabenseifner(a)hlrs.de . > High Performance Computing Center (HLRS) . . . ++49(0)711/685-65530 . > University of Stuttgart . . . . . . www.hlrs.de/people/rabenseifner . > Nobelstr. 19, 70569 Stuttgart, Germany > _______________________________________________ > mpi-forum mailing list > mpi-forum(a)lists.mpi-forum.org > https://lists.mpi-forum.org/mailman/listinfo/mpi-forum

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no-no-votes for the readings yesterday - Re: December Meeting Draft Agenda Posted
by Rolf Rabenseifner 07 Dec '22

07 Dec '22

Dear Wesley and Martin, the following small no-no-vote changes for/from the readings yesterday should be read and voted: Issue 493 and PR 753 (on new progress section): https://github.com/mpi-forum/mpi-standard/pull/753/files/dc50cc9c6b40eb7328… Issue 641 and PR 752 (on Annex A.2): https://github.com/mpi-forum/mpi-standard/pull/752/files/9141595df073078c60… and only inverting the sequence Wait / test(true) / test(false): https://github.com/mpi-forum/mpi-standard/pull/752/files/af2b14e7b3c61541eb… and https://github.com/mpi-forum/mpi-standard/files/10175926/mpi41-report_Issue… Issue 605 and PR 746 (Titles for topology examples) https://github.com/mpi-forum/mpi-standard/pull/746/commits/74936f003a4cb38f… With those, I expect that my readings are done. Best reagrds Rolf -- Dr. Rolf Rabenseifner . . . . . . . . . .. . . rabenseifner(a)hlrs.de . High Performance Computing Center (HLRS) . . . ++49(0)711/685-65530 . University of Stuttgart . . . . . . www.hlrs.de/people/rabenseifner . Nobelstr. 19, 70569 Stuttgart, Germany

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Tuesday, December 6 MPI Forum Voting
by Wes Bland 06 Dec '22

06 Dec '22

Hi all, Given the large number of readings and ballots taking place at this meeting, I wanted to keep folks up to date on what we’ll be voting on and when. As usual, we’ll separate the "no-no" ballots from the “main” ballots with which they are paired. So today, we will vote on all of the existing "no-no” items: #553 <https://github.com/mpi-forum/mpi-issues/issues/553>: RMA: Add missing win-sync calls to Example 12.21 #551 <https://github.com/mpi-forum/mpi-issues/issues/551>: MPI_Win_free is synchronizing, except when it isn't #407 <https://github.com/mpi-forum/mpi-issues/issues/407>: Adjust RMA Chapter to New Terms or vice versa (and remove interims statement) #429 <https://github.com/mpi-forum/mpi-issues/issues/429>: RMA: Replace 'operation' with 'operator' where appropriate #590 <https://github.com/mpi-forum/mpi-issues/issues/590>: Remove Physical Requirement from Voting Meetings #589 <https://github.com/mpi-forum/mpi-issues/issues/589>: Errata: Issues with Partitioned Communication Example-4.4 #634 <https://github.com/mpi-forum/mpi-issues/issues/634>: Fix MPI_WIN_SYNC text Note that there were a couple of late additions to this list based on the readings yesterday. Tomorrow we’ll probably vote on everything else on the voting page: https://www.mpi-forum.org/meetings/2022/12/votes This ballot will take place at approximately 10am US Central time and you’ll vote by going to the link that I’ll email out to you at that time. As usual, we might start a minute or two late depending on the discussion going on at that time and you’ll have 30 minutes to cast your ballot once I send out the email. Remember that you must attend the meeting prior to the first ballot in order to be eligible to vote. The list of who has registered and who has attended is here: https://www.mpi-forum.org/meetings/2022/12/attendance. If I didn’t see you on the list of folks that joined the Zoom call yesterday, you (or someone else from your org) need to join the call before 10am US Central today to be able to vote. Here’s the list of orgs that I think are eligible and who aren’t: Eligible to vote AMD Amazon Atos Cornelis Networks HLRS, University of Stuttgart HPE IBM INRIA Intel Corporation Kichakato Kizito Lawrence Livermore National Laboratory Leibniz Supercomputing Centre Los Alamos National Laboratory Meta NVIDIA Oak Ridge National Laboratory ParaTools SAS Queen's University RWTH Aachen University Technical University of Munich The University of Tokyo University of Alabama University of Illinois Urbana-Champaign University of Tennessee, Chattanooga University of Tennessee, Knoxville Université Grenoble Alpes VSC Research Center, TU Wien ZIH, TU Dresden Did not register for 2 of last 3 meetings Lawrence Berkeley National Laboratory Tennessee Tech University Not present at current meeting Argonne National Laboratory CEA Ohio State University Sandia National Laboratory The Texas Advanced Computing Center University of New Mexico Did not attend 2 of last 3 meetings Forschungszentrum Julich University of Basel If you have any questions, let me know via email or Slack (for a faster response). Thanks, Wes

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Virtual MPI Forum meeting today (10am CT, Nov 30th)
by Martin Schulz 30 Nov '22

30 Nov '22

Hi all, As announced last week, we’ll have an MPI virtual meeting today at 10am US CT, in which Aurelian will cover ULFM Part 2. The link is in the usual place on the forum website. Thanks! Martin -- Prof. Dr. Martin Schulz, Chair of Computer Architecture and Parallel Systems Department of Informatics, TU-Munich, Boltzmannstraße 3, D-85748 Garching Member of the Board of Directors at the Leibniz Supercomputing Centre (LRZ) Email: schulzm(a)in.tum.de From: mpi-forum <mpi-forum-bounces(a)lists.mpi-forum.org> on behalf of Martin Schulz via mpi-forum <mpi-forum(a)lists.mpi-forum.org> Reply to: Main MPI Forum mailing list <mpi-forum(a)lists.mpi-forum.org> Date: Wednesday, 23. November 2022 at 08:28 To: Joseph Schuchart via mpi-forum <mpi-forum(a)lists.mpi-forum.org> Cc: Martin Schulz <schulzm(a)in.tum.de> Subject: [Mpi-forum] Today no virtual MPI Forum meeting, next meeting on 11/30 Hi all, We have no virtual MPI Forum meeting planned for today – we’ll meet next week at the usual time (topic ULFM) and then the following week for our December full meeting (Mo-Th). For the latter, please make sure you register asap if you plan to attend. Also, all please double check the agenda, to make sure we got it correct (it is rather lengthy and complex this time). Thanks! Martin -- Prof. Dr. Martin Schulz, Chair of Computer Architecture and Parallel Systems Department of Informatics, TU-Munich, Boltzmannstraße 3, D-85748 Garching Member of the Board of Directors at the Leibniz Supercomputing Centre (LRZ) Email: schulzm(a)in.tum.de

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Re: [Mpi-forum] Upcoming Meeting Schedule for the MPI Forum
by Jeff Hammond 24 Nov '22

24 Nov '22

I don’t see any major conflicts. Perth as a virtual meeting is going to be rough, because Europeans will be waking up around 2 AM and people in the New World will be working in the evening and into the night. It’s also the longest flight one can take from North America. It’s less than the flight time for Apollo 11 to get to the moon, but close. Jeff > On 24Nov 2022, at 2:12 AM, Martin Schulz via mpi-forum <mpi-forum(a)lists.mpi-forum.org> wrote: > > Hi all, > > We need to discuss the schedule for the upcoming meetings in 2023/24. Formally, we will decide on this during the MPI forum meeting, but I wanted to send out the following proposal ahead of time, so everyone can check for major conflicts and or other issues. Note, we decided to hold the spring meeting in person/hybrid (preferably ET/CT), summer and winter fully virtual and Fall together with EuroMPI (and keep co-locating EuroMPI and IWOMP). > > For the spring meeting, we have an offer to host this in Boston – location and dates are confirmed: > > Spring Meeting: > March 13 to 16, 2023, Boston (AWS Offices, thanks Quincey) > Start noon, end noon > > Assuming we finish all final reading in that spring meeting, and we want to hit SC for MPI 4.1, we need two voting meetings instead of one summer meeting (both virtual): > > Suggestions (decent spacing plus avoiding summer conflicts, I hope): > May 1 to 4, 2023, virtual > Could be fewer days if votes are the core items > > July 10 to 13, 2023, virtual > Could be fewer days if votes are the core items > > The fall meeting will be with EuroMPI in Bristol – this will be the RCS meeting (the one we read the entire standard page by page – hence, onsite will make things a lot easier): > > Fall Meeting: > September 13-15, 2023, Bristol (right after EuroMPI, parallel to IWOMP) > Three full days > > Again, assuming we intend to hit SC23 for MPI 4.1, we need an additional voting meeting. > > Suggestion: two weeks before SC23 > October 31 to November 3, 2023, virtual > Could be fewer days depending on agenda > > Starting after SC23 we would be back on a normal schedule: > > Winter Meeting: > December 4-7, 2023, virtual > > Spring Meeting (space reserved): > February 26-March 1, 2024, Chicago (Big Ten Center in Chicago, thanks to Maria and Bill) > Start noon, end Noon > > Summer Meeting: > June timeframe, virtual > Let’s wait for 2024 summer conflicts before fixing dates > > Fall Meeting: > September, again with EuroMPI and IWOMP > Location would be Pawsey Supercomputing Center near Perth, Australia > (the location was already picked by IWOMP - I know this is a stretch for many, but we will have a hybrid option and it would help cover an area that is traditionally underrepresented in the forum and – especially – the conference) > > Please take a look at the dates and send me any information about major conflicts. > > Thanks! > > Martin > > > > -- > Prof. Dr. Martin Schulz, Chair of Computer Architecture and Parallel Systems > Department of Informatics, TU-Munich, Boltzmannstraße 3, D-85748 Garching > Member of the Board of Directors at the Leibniz Supercomputing Centre (LRZ) > Email: schulzm(a)in.tum.de <mailto:[email protected]> > > _______________________________________________ > mpi-forum mailing list > mpi-forum(a)lists.mpi-forum.org <mailto:[email protected]> > https://lists.mpi-forum.org/mailman/listinfo/mpi-forum <https://lists.mpi-forum.org/mailman/listinfo/mpi-forum>

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Upcoming Meeting Schedule for the MPI Forum
by Martin Schulz 23 Nov '22

23 Nov '22

Hi all, We need to discuss the schedule for the upcoming meetings in 2023/24. Formally, we will decide on this during the MPI forum meeting, but I wanted to send out the following proposal ahead of time, so everyone can check for major conflicts and or other issues. Note, we decided to hold the spring meeting in person/hybrid (preferably ET/CT), summer and winter fully virtual and Fall together with EuroMPI (and keep co-locating EuroMPI and IWOMP). For the spring meeting, we have an offer to host this in Boston – location and dates are confirmed: Spring Meeting: March 13 to 16, 2023, Boston (AWS Offices, thanks Quincey) Start noon, end noon Assuming we finish all final reading in that spring meeting, and we want to hit SC for MPI 4.1, we need two voting meetings instead of one summer meeting (both virtual): Suggestions (decent spacing plus avoiding summer conflicts, I hope): May 1 to 4, 2023, virtual Could be fewer days if votes are the core items July 10 to 13, 2023, virtual Could be fewer days if votes are the core items The fall meeting will be with EuroMPI in Bristol – this will be the RCS meeting (the one we read the entire standard page by page – hence, onsite will make things a lot easier): Fall Meeting: September 13-15, 2023, Bristol (right after EuroMPI, parallel to IWOMP) Three full days Again, assuming we intend to hit SC23 for MPI 4.1, we need an additional voting meeting. Suggestion: two weeks before SC23 October 31 to November 3, 2023, virtual Could be fewer days depending on agenda Starting after SC23 we would be back on a normal schedule: Winter Meeting: December 4-7, 2023, virtual Spring Meeting (space reserved): February 26-March 1, 2024, Chicago (Big Ten Center in Chicago, thanks to Maria and Bill) Start noon, end Noon Summer Meeting: June timeframe, virtual Let’s wait for 2024 summer conflicts before fixing dates Fall Meeting: September, again with EuroMPI and IWOMP Location would be Pawsey Supercomputing Center near Perth, Australia (the location was already picked by IWOMP - I know this is a stretch for many, but we will have a hybrid option and it would help cover an area that is traditionally underrepresented in the forum and – especially – the conference) Please take a look at the dates and send me any information about major conflicts. Thanks! Martin -- Prof. Dr. Martin Schulz, Chair of Computer Architecture and Parallel Systems Department of Informatics, TU-Munich, Boltzmannstraße 3, D-85748 Garching Member of the Board of Directors at the Leibniz Supercomputing Centre (LRZ) Email: schulzm(a)in.tum.de

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Re: [Mpi-forum] December Meeting Draft Agenda Posted
by Rolf Rabenseifner 23 Nov '22

23 Nov '22

Hi Wes, in the agenda, the section "Part 3 - Updating Side Document Function Table (SDFT)" is without references. Can you please add an additional line: [641](https://github.com/mpi-forum/mpi-issues/issues/641) For all SDFT issues, see description of #641 Thank you for pulling all together in this longest meeting agenda that we probably ever had. Kind regards Rolf ----- Original Message ----- > From: "Main MPI Forum mailing list" <mpi-forum(a)lists.mpi-forum.org> > To: "Main MPI Forum mailing list" <mpi-forum(a)lists.mpi-forum.org> > Cc: "Wesley Bland" <work(a)wesbland.com> > Sent: Tuesday, November 22, 2022 3:29:08 PM > Subject: [Mpi-forum] December Meeting Draft Agenda Posted > Hi all, > > After the slew of announcements yesterday, I hope that Martin and I have gotten > everything posted on the agenda page correctly. > > [ https://www.mpi-forum.org/meetings/2022/12/agenda ] [ > https://www.mpi-forum.org/meetings/2022/12/agenda | MPI Forum ] > [ https://www.mpi-forum.org/meetings/2022/12/agenda | mpi-forum.org ] > [ https://www.mpi-forum.org/meetings/2022/12/agenda ] > > > Please have a look and make sure that everything you think should be on there is > present. If there’s an issue, please let us know. > > Registration for the meeting is also still open. > > [ https://forms.gle/R13aZ8VfayEKxkuX7 ] [ https://forms.gle/R13aZ8VfayEKxkuX7 | > December 2022 MPI Forum Meeting Registration ] > [ https://forms.gle/R13aZ8VfayEKxkuX7 | forms.gle ] > > Thanks, > Wes > > _______________________________________________ > mpi-forum mailing list > mpi-forum(a)lists.mpi-forum.org > https://lists.mpi-forum.org/mailman/listinfo/mpi-forum -- Dr. Rolf Rabenseifner . . . . . . . . . .. . . rabenseifner(a)hlrs.de . High Performance Computing Center (HLRS) . . . ++49(0)711/685-65530 . University of Stuttgart . . . . . . www.hlrs.de/people/rabenseifner . Nobelstr. 19, 70569 Stuttgart, Germany

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Re: [Mpi-forum] December Meeting Draft Agenda Posted
by Martin Schulz 23 Nov '22

23 Nov '22

Hi Jeff, This just means changes were made since the reading on the respective issues. If the No No passes, then we proceed to the first vote. If it fails, we either vote on the issue/PR without these changes or (more likely) restart the reading process, as the changes are deemed too large for the No No process. Hope this helps, Martin -- Prof. Dr. Martin Schulz, Chair of Computer Architecture and Parallel Systems Department of Informatics, TU-Munich, Boltzmannstraße 3, D-85748 Garching Member of the Board of Directors at the Leibniz Supercomputing Centre (LRZ) Email: schulzm(a)in.tum.de From: mpi-forum <mpi-forum-bounces(a)lists.mpi-forum.org> on behalf of Jeff Hammond via mpi-forum <mpi-forum(a)lists.mpi-forum.org> Reply to: Main MPI Forum mailing list <mpi-forum(a)lists.mpi-forum.org> Date: Wednesday, 23. November 2022 at 12:49 To: Main MPI Forum mailing list <mpi-forum(a)lists.mpi-forum.org> Cc: Jeff Hammond <jeff.science(a)gmail.com> Subject: Re: [Mpi-forum] December Meeting Draft Agenda Posted Why are 407, 429, 551 and 553 listed under both "NO NO" and "FIRST"? Is this because if they fail the "NO NO" vote then they proceed down the 2 vote path? Jeff On Tue, Nov 22, 2022 at 4:45 PM Wes Bland via mpi-forum <mpi-forum(a)lists.mpi-forum.org> wrote: Hi all, After the slew of announcements yesterday, I hope that Martin and I have gotten everything posted on the agenda page correctly. MPI Forummpi-forum.org favicon.ico Please have a look and make sure that everything you think should be on there is present. If there’s an issue, please let us know. Registration for the meeting is also still open. December 2022 MPI Forum Meeting Registrationforms.gle Thanks, Wes _______________________________________________ mpi-forum mailing list mpi-forum(a)lists.mpi-forum.org https://lists.mpi-forum.org/mailman/listinfo/mpi-forum -- Jeff Hammond jeff.science(a)gmail.com http://jeffhammond.github.io/

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