July 2019 - mpiwg-sessions - mailman3.cels.anl.gov

notes from 7/29/19 webex
by Pritchard Jr., Howard 29 Jul '19

29 Jul '19

Hello Folks Some notes from the 7/29/19 webex. Attending: Dan Holmes, Wesley Bland, Aurelien Bouteiller, Marc-Andre Hermanns, Howard Pritchard Dan turned on recording of the meeting. Dan pointed out a conflict about info keys – namely how they will be accessed before MPI initialization and after MPI finalization. Dan and Mark-Andre had discussed at ISC and were of the opinion that changes for MPI info keys should go into the sessions (PR 55) proposal. Sessions is being considered as a gating factor for 4.0. We need to figure out what is the difference between the info object changes in the. Aurelien says all the FT WG is wanting is to have MPI_INFO_ENV available before MPI initialization so the app can figure out what error handler has been set. Tools and Sessions don’t really care so much about this being available or not before MPI initialization. Dan discusses compromise that Sessions has taken. Wesley says FT needs MPI_Error_class and MPI_Error_string to be invocable prior to MPI initialization as well. Aurelien thinks this is in PR 50. Dan thinks the issue of argc/argv and how to fill in MPI_INFO_ENV is the key question. Aurelien thinks maybe add a new function to set MPI_INFO_ENV? Maybe a new ticket to handle this. FT group will work on this. Dan says we need to go through discrepancies between tickets. Sessions will need to pull in some of the FT adds to callable-prior-to-MPI Init to the table in Chapter 10 of PR 55. Mark-Andre raised some concerns about MPI_Info_get and error cases, but we think this will be covered by the setting-default-error handler before MPI initialization approach. Howard -- Howard Pritchard HPC-ENV Los Alamos National Laboratory

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Re: [mpiwg-sessions] MPI_Info before Init
by HOLMES Daniel 29 Jul '19

29 Jul '19

Hi all, As we have agreement from all key parties (except Kathryn), we should go ahead with this today. Connection details can be found here: https://mpi-forum.epcc.ed.ac.uk/mpiwg-sessions.php The time is, as Martin stated, 1pm Eastern US today (which is, indeed, 7pm in Germany). Cheers, Dan. — Dr Daniel Holmes PhD Architect (HPC Research) d.holmes(a)epcc.ed.ac.uk<mailto:[email protected]> Phone: +44 (0) 131 651 3465 Mobile: +44 (0) 7940 524 088 Address: Room 2.09, Bayes Centre, 47 Potterrow, Central Area, Edinburgh, EH8 9BT — The University of Edinburgh is a charitable body, registered in Scotland, with registration number SC005336. — On 23 Jul 2019, at 12:51, Martin Schulz <schulzm(a)in.tum.de<mailto:[email protected]>> wrote: Hi all, I just wanted to start a common thread between the three WGs who are interested in/need the MPI_Info before Init. During a few recent calls we decided to get everyone involved together to find a common approach, which seems to lead us to the ticket Dan and Howard are working on plus making sure the language covers tools and FT. Dan and Howard suggested to use the next Sessions WG call, which is according to my calendar Monday 7/29 at 7pm German time, which would then be noon central US time. Would this work for everyone? Who else do we need on the call? Once we have the “must attends” agreed upon a date, I would suggest to also announce it to the three WGs - if people want, I could also announce it to the whole forum. 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]>

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no webex today
by Pritchard Jr., Howard 08 Jul '19

08 Jul '19

Hello Sessions WG members, We are skipping today’s webex and next week’s as well owing to vacations, travel, etc. We will resume meeting on 6/22. Thanks, Howard -- Howard Pritchard HPC-ENV Los Alamos National Laboratory

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Re: [mpiwg-sessions] current status of sessions proposal
by Pritchard Jr., Howard 01 Jul '19

01 Jul '19

HI Dan, Yes let’s resume on the 22nd of July. Howard From: HOLMES Daniel <d.holmes(a)epcc.ed.ac.uk> Date: Monday, July 1, 2019 at 8:29 AM To: "Pritchard Jr., Howard" <howardp(a)lanl.gov> Cc: MPI Sessions working group <mpiwg-sessions(a)lists.mpi-forum.org> Subject: Re: [mpiwg-sessions] current status of sessions proposal Hi Howard (et al), I’m happy for today’s meeting to be cancelled. Also, I won’t be attending the next two meetings (vacation for me). Shall we cancel those meetings as well and meet next on 22nd July? Cheers, Dan. — Dr Daniel Holmes PhD Architect (HPC Research) d.holmes(a)epcc.ed.ac.uk<mailto:[email protected]> Phone: +44 (0) 131 651 3465 Mobile: +44 (0) 7940 524 088 Address: Room 2.09, Bayes Centre, 47 Potterrow, Central Area, Edinburgh, EH8 9BT — The University of Edinburgh is a charitable body, registered in Scotland, with registration number SC005336. — On 1 Jul 2019, at 15:03, Pritchard Jr., Howard via mpiwg-sessions <mpiwg-sessions(a)lists.mpi-forum.org<mailto:[email protected]>> wrote: Hello Folks, Unless someone has a topic to discuss, the sessions WG will not meet today. There is one PR open against the sessions proposal: https://github.com/mpiwg-sessions/mpi-standard/pull/33 which addresses remaining forum feedback tracking issues: https://github.com/mpiwg-sessions/sessions-issues/issues/13 https://github.com/mpiwg-sessions/sessions-issues/issues/16 We decided to defer to the FT WG for any rewording of the advice to implementors concerning MPI_Abort. The proposal is PR https://github.com/mpi-forum/mpi-standard/pull/55 Thanks, Howard -- Howard Pritchard HPC-ENV Los Alamos National Laboratory _______________________________________________ mpiwg-sessions mailing list mpiwg-sessions(a)lists.mpi-forum.org<mailto:[email protected]> https://lists.mpi-forum.org/mailman/listinfo/mpiwg-sessions

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Re: [mpiwg-sessions] current status of sessions proposal
by HOLMES Daniel 01 Jul '19

01 Jul '19

Hi Howard (et al), I’m happy for today’s meeting to be cancelled. Also, I won’t be attending the next two meetings (vacation for me). Shall we cancel those meetings as well and meet next on 22nd July? Cheers, Dan. — Dr Daniel Holmes PhD Architect (HPC Research) d.holmes(a)epcc.ed.ac.uk<mailto:[email protected]> Phone: +44 (0) 131 651 3465 Mobile: +44 (0) 7940 524 088 Address: Room 2.09, Bayes Centre, 47 Potterrow, Central Area, Edinburgh, EH8 9BT — The University of Edinburgh is a charitable body, registered in Scotland, with registration number SC005336. — On 1 Jul 2019, at 15:03, Pritchard Jr., Howard via mpiwg-sessions <mpiwg-sessions(a)lists.mpi-forum.org<mailto:[email protected]>> wrote: Hello Folks, Unless someone has a topic to discuss, the sessions WG will not meet today. There is one PR open against the sessions proposal: https://github.com/mpiwg-sessions/mpi-standard/pull/33 which addresses remaining forum feedback tracking issues: https://github.com/mpiwg-sessions/sessions-issues/issues/13 https://github.com/mpiwg-sessions/sessions-issues/issues/16 We decided to defer to the FT WG for any rewording of the advice to implementors concerning MPI_Abort. The proposal is PR https://github.com/mpi-forum/mpi-standard/pull/55 Thanks, Howard -- Howard Pritchard HPC-ENV Los Alamos National Laboratory _______________________________________________ mpiwg-sessions mailing list mpiwg-sessions(a)lists.mpi-forum.org<mailto:[email protected]> https://lists.mpi-forum.org/mailman/listinfo/mpiwg-sessions

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current status of sessions proposal
by Pritchard Jr., Howard 01 Jul '19

01 Jul '19

Hello Folks, Unless someone has a topic to discuss, the sessions WG will not meet today. There is one PR open against the sessions proposal: https://github.com/mpiwg-sessions/mpi-standard/pull/33 which addresses remaining forum feedback tracking issues: https://github.com/mpiwg-sessions/sessions-issues/issues/13 https://github.com/mpiwg-sessions/sessions-issues/issues/16 We decided to defer to the FT WG for any rewording of the advice to implementors concerning MPI_Abort. The proposal is PR https://github.com/mpi-forum/mpi-standard/pull/55 Thanks, Howard -- Howard Pritchard HPC-ENV Los Alamos National Laboratory

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