June 2024 - mpi-forum - mailman3.cels.anl.gov

EuroMPI/Australia 2024 - Call for Posters and Short Papers
by Blaas-Schenner, Claudia 24 Jun '24

24 Jun '24

1 0

Re: [Mpi-forum] Agenda for MPI Forum
by Martin Schulz 17 Jun '24

17 Jun '24

Hi all, Based on the availability of speakers, I have uploaded a revised agenda: The WG time on Monday is cancelled – to avoid confusion we will start the plenary still at 11am CT. Tomorrow (Tuesday) will be dedicated to WG time – currently Tony has scheduled a slot for the collectives/partitioned, but other WGs are welcome to use the slot as well – WG chairs, please send out separate zoom links for your sessions The rest is as indicated on the agenda – plenaries will be Monday and Thursday (with the ABI being scheduled for Thursday first thing) 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: Martin Schulz <schulzm(a)in.tum.de> Date: Monday, 17. June 2024 at 1:09 AM To: Joseph Schuchart via mpi-forum <mpi-forum(a)lists.mpi-forum.org> Subject: [Mpi-forum] Agenda for MPI Forum Hi all, I have collected all the input for the MPI Forum this week and assembled the agenda from there – it can be found here: https: //www. mpi-forum. org/meetings/2024/06/agenda We’ll start with a 2h WG session from the collective/partitioned ZjQcmQRYFpfptBannerStart This Message Is From an External Sender This message came from outside your organization. ZjQcmQRYFpfptBannerEnd Hi all, I have collected all the input for the MPI Forum this week and assembled the agenda from there – it can be found here: https://urldefense.us/v3/__https://www.mpi-forum.org/meetings/2024/06/agend… We’ll start with a 2h WG session from the collective/partitioned WG at 9am CT and will then switch at 11am CT to the plenary session. If anything is missing from the plenary part, 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

1 0

Re: [Mpi-forum] MPI Forum Next Week
by Jeff Hammond 17 Jun '24

17 Jun '24

I will provide an update on the MPI ABI discussions, including: 1. Why we need MPI_<handle>_{to,from}int instead of f2c/c2f in the C API in order to support Fortran in a non-stupid way. This is completely noncontroversial and makes the C API better since apparently even C++ users are using f2c/c2f to "(de)serialize" handles. 2. Why we need new callbacks to support third-party language bindings (including Fortran in an implementation-agnostic way). This is useful both for Vapaa and mpi4py. There's one unsolved issue to discuss. 3. Why we need some sort of sentinel registration. This addresses the hackish way the C implementation knows what MPI_IN_PLACE, .e.g, is in Fortran. 4. Why we need Fortran datatype registration. Basically, the Fortran API tells the C API the mapping from Fortran to C types so the C implementation doesn't need to know how the Fortran compiler works. There might need to be an init hook here since it is legal to initialize MPI from C and then use Fortran features. https://urldefense.us/v3/__https://github.com/pmodels/mpich/pull/6953__;!!G… and https://urldefense.us/v3/__https://github.com/pmodels/mpich/pull/6965__;!!G… have some discussion. You don't have to read these or the thousands of Slack messages if you don't want, as the purpose of this plenary is to summarize the situation and get guidance on the text changes I should make. Jeff On Wed, Jun 12, 2024 at 1:59 AM Martin Schulz via mpi-forum < mpi-forum(a)lists.mpi-forum.org> wrote: > Hi all, We have our next MPI Forum meeting scheduled for next week, at the > usual times for virtual meetings from 9am to 1pm CT on Monday, Tuesday and > Thursday (as Wednesday is a US holiday that we seemed to have missed when > scheduling this). > ZjQcmQRYFpfptBannerStart > This Message Is From an External Sender > This message came from outside your organization. > > ZjQcmQRYFpfptBannerEnd > > Hi all, > > > > We have our next MPI Forum meeting scheduled for next week, at the usual > times for virtual meetings from 9am to 1pm CT on Monday, Tuesday and > Thursday (as Wednesday is a US holiday that we seemed to have missed when > scheduling this). > > > > My apologies, though, for not sending a reminder for this – I have to > admit, this sneaked up on me a bit quicker than I thought and I did not see > this in time to catch it at the 2 week mark. Unfortunately, no-one else > happened to catch this either, which now leaves us with only ballot item, > the change of rules we discussed last time. Wes and I thought about whether > we could mitigate this with a “creative” use of no/no votes, but we both > quickly came to the conclusion that would not be in the spirit of the forum > and the rules and, hence, would like to refrain from this. > > > > Nevertheless, we can and should still use this meeting to make progress on > some the larger points, in particular the ABI text. With the timeline for > (what we commonly expect to be) MPI 4.2 not set, this should actually not > set us back in time. > > > > Therefore, if you have any particular items, you would like to have on the > agenda, please let Wes and me know, and we will add this to the agenda > asap. Also, if there are WGs who would like to use larger blocks for > dedicated discussion time, this would be a good opportunity as well. > > > > Wes has already created a registration link, so please register asap if > you plan to attend, so we can the needed data for eligibility and quorums. > > > > https://urldefense.us/v3/__https://www.mpi-forum.org/meetings/2024/06/logis… > <https://urldefense.us/v3/__https://www.mpi-forum.org/meetings/2024/06/logis…> > > > > Thanks and my apologies again for the missing reminder – let’s still make > the best out of it! > > > > 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://urldefense.us/v3/__https://lists.mpi-forum.org/mailman/listinfo/mpi… > -- Jeff Hammond jeff.science(a)gmail.com https://urldefense.us/v3/__http://jeffhammond.github.io/__;!!G_uCfscf7eWS!Y…

1 0

Agenda for MPI Forum
by Martin Schulz 16 Jun '24

16 Jun '24

Hi all, I have collected all the input for the MPI Forum this week and assembled the agenda from there – it can be found here: https://urldefense.us/v3/__https://www.mpi-forum.org/meetings/2024/06/agend… We’ll start with a 2h WG session from the collective/partitioned WG at 9am CT and will then switch at 11am CT to the plenary session. If anything is missing from the plenary part, 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

1 0

Re: [Mpi-forum] MPI Forum Next Week
by Joseph Schuchart 14 Jun '24

14 Jun '24

1 0

Re: [Mpi-forum] MPI Forum Next Week
by Aurelien Bouteiller 14 Jun '24

14 Jun '24

1 0

Re: [Mpi-forum] MPI Forum Next Week
by Benson Muite 12 Jun '24

12 Jun '24

1 0

MPI Forum Next Week
by Martin Schulz 11 Jun '24

11 Jun '24

Hi all, We have our next MPI Forum meeting scheduled for next week, at the usual times for virtual meetings from 9am to 1pm CT on Monday, Tuesday and Thursday (as Wednesday is a US holiday that we seemed to have missed when scheduling this). My apologies, though, for not sending a reminder for this – I have to admit, this sneaked up on me a bit quicker than I thought and I did not see this in time to catch it at the 2 week mark. Unfortunately, no-one else happened to catch this either, which now leaves us with only ballot item, the change of rules we discussed last time. Wes and I thought about whether we could mitigate this with a “creative” use of no/no votes, but we both quickly came to the conclusion that would not be in the spirit of the forum and the rules and, hence, would like to refrain from this. Nevertheless, we can and should still use this meeting to make progress on some the larger points, in particular the ABI text. With the timeline for (what we commonly expect to be) MPI 4.2 not set, this should actually not set us back in time. Therefore, if you have any particular items, you would like to have on the agenda, please let Wes and me know, and we will add this to the agenda asap. Also, if there are WGs who would like to use larger blocks for dedicated discussion time, this would be a good opportunity as well. Wes has already created a registration link, so please register asap if you plan to attend, so we can the needed data for eligibility and quorums. https://urldefense.us/v3/__https://www.mpi-forum.org/meetings/2024/06/logis… Thanks and my apologies again for the missing reminder – let’s still make the best out of it! 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

1 0