May 2022 - mpi-forum - mailman3.cels.anl.gov

MPI Forum This Week!
by Martin Schulz 22 May '22

22 May '22

Hi all, Just as a quick reminder: our next (exceptional voting) MPI Forum meeting is this week, starting tomorrow May 23 and will run until May 26. On all days, we will run from 9am US CT to 1pm US CT. The details, including dial in data, is at: https://www.mpi-forum.org/meetings/2022/05/agenda Note: the link is a different link specifically for this meeting. On May 23 we will have WG meetings – this time, this will be in one track. The rough split is: 9:00 HW Topologies 10:00 Hybrid/Accelerators 11:00 Sessions However, slight shifts may occur at the common discretion of the WG leads. The other three days are intended for plenaries, as listed on the agenda. We have several large reading scheduled we would like to get through. Hence, it would be good if for those readings everyone could work with the github versions of the PRs during the reading, so that small change suggestions can be made directly into the PR and will not derail the overall readings. I am sure the “readers” will appreciate this and it gives us a better chance to focus on the conceptual issues in the discussion. Thanks and talk to you all tomorrow! 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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No Virtual MPI Forum Meeting tomorrow / September dates changed
by Martin Schulz 17 May '22

17 May '22

Hi all, Tomorrow’s virtual MPI forum meeting is cancelled. We will meet for the voting meeting the following week. The agenda is online – Monday is WG day, Tue-Thu plenaries. Further, due to a conflict with another large event, the EuroMPI conference (and with that the forum) had to pushed back one week. The conference now starts on September 26, the MPI forum on September 28 and then runs to September 30. The webpages should all be updated by now. See you all next week! 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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No MPI Forum Virtual Meeting this week
by Martin Schulz 11 May '22

11 May '22

HI all, There will be no MPI Forum meeting today (Wednesday May 11th) – see/hear you all next week again. Thanks, Martin PS: Please register for the MPI Forum meeting in two weeks, if you haven’t done so, yet. -- 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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Agenda for May MPI Forum Meeting
by Martin Schulz 10 May '22

10 May '22

Hi all, I have updated the agenda for the May meeting and posted it on the website. Based on the requests, we will have 1 day of WG meetings (Monday) and 3 days of plenaries (with several large and probably long readings). If I missed anything or if there are other requests for discussion slots, please let me know. 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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Discussion time for Tools WG
by Marc-André Hermanns 10 May '22

10 May '22

Dear Martin, all, we don't have readings prepared, yet would like some discussion and plenary time for the Tools topics. A topic I would like to discuss (as it's currently blocking progress [no pun intended] for the MPI_Request_get_status* ticket) is whether get_status is intended to make progress. We would need Dan's input on the distinct states of communication operations, here. The other topic that touches people outside the WG would be the composite type pairs. Joseph wanted to do some performance tests and Jim is having a related topic (using Info objects on types) in the HACC group, so it would be great if we would not be co-scheduled so the two could join the discussion. Cheers, Marc-Andre -- Dr. rer. nat. Marc-André Hermanns IT Center Group: High Performance Computing Division: Computational Science and Engineering RWTH Aachen University Seffenter Weg 23 52074 Aachen Phone: +49 241 80-24381 hermanns(a)itc.rwth-aachen.de www.itc.rwth-aachen.de Social Media Kanäle des IT Centers: https://blog.rwth-aachen.de/itc/ https://www.facebook.com/itcenterrwth https://www.linkedin.com/company/itcenterrwth https://twitter.com/ITCenterRWTH https://www.youtube.com/channel/UCKKDJJukeRwO0LP-ac8x8rQ

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Error Handling WG reading requests for May 22 forum
by Aurelien Bouteiller 09 May '22

09 May '22

Hello Martin, The Error Handling Working Group would like to read the following PRs * expansion of error handler association to cover sessions (and clarifications) * https://github.com/mpi-forum/mpi-standard/pull/644 * fine-grain recovery (slice 1) (aka ULFM v2) * https://github.com/mpi-forum/mpi-standard/pull/665 Best Regards, Aurelien -- Aurelien Bouteiller, Ph.D. Innovative Computing Laboratory; The University of Tennessee; 1122 Volunteer Blvd.; Claxton suite 203; 37996, Knoxville, TN, USA +1 865 974 9308 (p); +1 865 974 8296 (f); Claxton 316 (f2f)

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Reading Request: strings for NULL objects
by Joseph Schuchart 09 May '22

09 May '22

I'd like to read the following proposal at the May 2022 meeting on behalf of JeffS: - MPI_*_GET_NAME functions accept MPI_*_NULL handles: https://github.com/mpi-forum/mpi-standard/pull/652 We will address Rolf's comment on the PR about the strings in the appendix later today and may have to request a no-no vote if it's past the deadline. Cheers Joseph

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Sessions WG reading requests for May 22 forum
by Pritchard Jr., Howard 09 May '22

09 May '22

Hello Martin, We’ve got a backlog of Sessions related PRs we would like to read at the upcoming forum: * Language bindings chapter needs updating for Sessions model * https://github.com/mpi-forum/mpi-standard/pull/658 * https://github.com/mpi-forum/mpi-issues/issues/535 * MPI_LASTUSEDCODE not covered in the sessions model * https://github.com/mpi-forum/mpi-standard/pull/657 * https://github.com/mpi-forum/mpi-issues/issues/545 * Clarify/fix description and usage of MPI_GROUP_NULL * https://github.com/mpi-forum/mpi-standard/pull/651 * https://github.com/mpi-forum/mpi-issues/issues/534 Thanks, Howard — [signature_61897647] Howard Pritchard Research Scientist HPC-ENV Los Alamos National Laboratory howardp(a)lanl.gov [signature_2587620371]<https://www.instagram.com/losalamosnatlab/>[signature_3454539606]<https://twitter.com/LosAlamosNatLab>[signature_1680406624]<https://www.linkedin.com/company/los-alamos-national-laboratory/>[signature_3881125065]<https://www.facebook.com/LosAlamosNationalLab/>

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Re: [Mpi-forum] [EXTERNAL] Re: Agenda items for May 2022 Meeting / deadline Monday (tomorrow)
by Pritchard Jr., Howard 09 May '22

09 May '22

HI Martin, The sessions WG could also use a 2h slot on one of the WG days. Howard On 5/8/22, 4:10 PM, "mpi-forum on behalf of Guillaume Mercier via mpi-forum" <mpi-forum-bounces(a)lists.mpi-forum.org on behalf of mpi-forum(a)lists.mpi-forum.org> wrote: Hi Martin, I'd like a 2h slot for the Topologies WG. thanks. Guillaume On 5/8/22 12:07 PM, Martin Schulz via mpi-forum wrote: > Hi all, > > Time is flying and our next voting meeting is coming up quickly on May > 23-26. As discussed in February, we will hold this meeting again fully > virtual in the usual timeslots, i.e., Mon-Thu of that week from 9am to > 1pm US CT. A first agenda draft is posted on the website, also in the > usual spot. > > https://www.mpi-forum.org/meetings/2022/05/agenda > <https://www.mpi-forum.org/meetings/2022/05/agenda> > > Please send any requests for ballots and/or reading requests to the list > by tomorrow/Monday and I will add them to the agenda. > > Also, since it worked well and seemed productive, I would like to > suggest to use the first one or two days (depending on demand and > depending on plenary time needed) to be used for longer WG discussions. > @Working Group Leads: please let me know if you would like a 2h or 4h > block on Mon and/or Tue for this. > > Wesley also already posted the registration link – please don’t forget > to register in time at: > > https://www.mpi-forum.org/meetings/2022/05/logistics > <https://www.mpi-forum.org/meetings/2022/05/logistics> > > 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 > > > _______________________________________________ > mpi-forum mailing list > mpi-forum(a)lists.mpi-forum.org > https://lists.mpi-forum.org/mailman/listinfo/mpi-forum >

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Reading requests May 2022 from the RMA WG
by Joseph Schuchart 09 May '22

09 May '22

The RMA WG would like to read the following proposals: - Fix semantic terms in RMA chapter: https://github.com/mpi-forum/mpi-standard/pull/611 - RMA: Add missing win-sync calls to Example 12.21: https://github.com/mpi-forum/mpi-standard/pull/663/files - MPI_Win_free is synchronizing, except when it isn't: https://github.com/mpi-forum/mpi-standard/pull/659 - RMA: Replace 'operation' with 'operator' where appropriate: https://github.com/mpi-forum/mpi-standard/pull/637 - RMA: both MPI_WIN_ALLOCATE and MPI_WIN_ALLOCATE_SHARED allocate memory: https://github.com/mpi-forum/mpi-standard/pull/664 All are first readings. #664 may qualify as a chapter committee fix, not sure what the procedure for that is though. This is gonna be fun :) Joseph

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