July 2020 - mpiwg-tools - mailman3.cels.anl.gov

Meeting reminder: Jul 30, 2020 (tomorrow)
by Joachim Protze 29 Jul '20

29 Jul '20

Hi all, This is a reminder of our regularly scheduled call tomorrow: Jul 30 at 8 am Pacific / 11 am Eastern / 5pm CET. Webex Info: https://github.com/mpiwg-tools/mpi-standard/wiki *NOTE*: The WebEx information moved to a non-public wiki. You have to be logged into Github *and* have to have access to the private Tools WG repositories. If you need access contact Marc-Andre in two weeks. Agenda: ------- Continue handle debugging discussion. Best Joachim -- Dipl.-Inf. Joachim Protze IT Center Group: High Performance Computing Division: Computational Science and Engineering RWTH Aachen University Seffenter Weg 23 D 52074 Aachen (Germany) Tel: +49 241 80- 24765 Fax: +49 241 80-624765 protze(a)itc.rwth-aachen.de www.itc.rwth-aachen.de

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Meeting reminder: Jul 23, 2020 (today)
by Marc-André Hermanns 23 Jul '20

23 Jul '20

Dear all, @John D.: No handle discussion, today. This is a reminder of our regularly scheduled call today: Jul 23 at 8 am Pacific / 11 am Eastern / 5pm CET. Webex Info: https://github.com/mpiwg-tools/mpi-standard/wiki *NOTE*: The WebEx information moved to a non-public wiki. You have to be logged into Github *and* have to have access to the private Tools WG repositories. If you need access contact me. Agenda: ------- - Diskussion of PR#168 [1] I am in a bit of a time crunch before a 2-week vacation starting next week, so I would just (quickly) want to finalize the PR and then end the meeting early. We should also discuss on whether we/you meet in the next to weeks to further Handles/QMPI, or whether we'd reconvene on Aug 13. Cheers, Marc-Andre [1] https://github.com/mpi-forum/mpi-standard/pull/168/files -- 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

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Meeting reminder: Jul 16, 2020 (today)
by Marc-André Hermanns 16 Jul '20

16 Jul '20

Dear all, @John D.: Today we would focus on the Handle introspection again. This is a reminder of our regularly scheduled call today: Jul 16 at 8 am Pacific / 11 am Eastern / 5pm CET. Webex Info: https://github.com/mpiwg-tools/mpi-standard/wiki *NOTE*: The WebEx information moved to a non-public wiki. You have to be logged into Github *and* have to have access to the private Tools WG repositories. If you need access contact me. Agenda: ------- - Handle Introspection Interface 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

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Re: [mpiwg-tools] Meeting reminder: Jul 09, 2020 (today)
by Marc-André Hermanns 10 Jul '20

10 Jul '20

Dear all, I uploaded some minutes of yesterday to the wiki at: https://github.com/mpiwg-tools/tools-issues/wiki/Notes-2020-07-09 Please add/adapt/comment as appropriate. The poll for the Issue 160 discussion clearly converged to Monday 13, 2020, 11-12 Central US. I put the meeting information up here: https://github.com/mpiwg-tools/mpi-standard/wiki/Issue-160-Discussion-Meeti… I can also forward to meeting information to any of you personally, if you drop me a short note. Cheers, Marc-Andre On 09.07.20 10:15, Marc-André Hermanns via mpiwg-tools wrote: > Dear all, > > @John D.: We will continue to focus on the Erratas for MPI 4.0, so we > will not discuss handles again. I will reach out to you again directly > when we start discussing handles, OK? > > This is a reminder of our regularly scheduled call today: > > Jul 09 at 8 am Pacific / 11 am Eastern / 5pm CET. > > Webex Info: > https://github.com/mpiwg-tools/mpi-standard/wiki > > *NOTE*: The WebEx information moved to a non-public wiki. You have to > be logged into Github *and* have to have access to the private Tools > WG repositories. If you need access contact me. > > Agenda: > ------- > - Quit feedback on #160/PR#161 discussion with sessions WG. > - Ticket #268/PR#168: Completely rethink what is to be said. > Potentially eliminate everything before "e.g." > - QMPI (if time permits) > > > For PR#161, the discussion took quite an interesting turn (please > check my comment on the PR) and I will schedule a separate meeting for > that to ensure more people can join. > > PR#161: https://github.com/mpi-forum/mpi-standard/pull/161 > PR@168: https://github.com/mpi-forum/mpi-standard/pull/168 > > Cheers, > Marc-Andre > > > _______________________________________________ > mpiwg-tools mailing list > mpiwg-tools(a)lists.mpi-forum.org > https://lists.mpi-forum.org/mailman/listinfo/mpiwg-tools > -- 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

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Cross-workinggroup discussion on Issue 160# / PR$161: Binding handles to MPI_T
by Marc-André Hermanns 09 Jul '20

09 Jul '20

Dear all, I was talking to Jeff Squyres about out discussion in the sessions working group on Monday about the MPI Tools WG Errata on binding to MPI_T variables. His suggestions was to plan for dedicated discussion hopefully with a broad implementors participation, because one of the discussion points was "is there anything preventing a "lazy binding" on parts of the implementations?" (see my comment on PR#161). Please indicate in this doodle poll as soon as possible whether you would be able to attend: https://doodle.com/poll/ruanc9szcfpeve8n The suggested time slots start already tomorrow, so please vote early and please also indicate if no option works for you (so I can estimate whether this email reached you) ;-) Please also forward this to any implementor not on the current recipient list. Thanks and 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

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Meeting reminder: Jul 09, 2020 (today)
by Marc-André Hermanns 09 Jul '20

09 Jul '20

Dear all, @John D.: We will continue to focus on the Erratas for MPI 4.0, so we will not discuss handles again. I will reach out to you again directly when we start discussing handles, OK? This is a reminder of our regularly scheduled call today: Jul 09 at 8 am Pacific / 11 am Eastern / 5pm CET. Webex Info: https://github.com/mpiwg-tools/mpi-standard/wiki *NOTE*: The WebEx information moved to a non-public wiki. You have to be logged into Github *and* have to have access to the private Tools WG repositories. If you need access contact me. Agenda: ------- - Quit feedback on #160/PR#161 discussion with sessions WG. - Ticket #268/PR#168: Completely rethink what is to be said. Potentially eliminate everything before "e.g." - QMPI (if time permits) For PR#161, the discussion took quite an interesting turn (please check my comment on the PR) and I will schedule a separate meeting for that to ensure more people can join. PR#161: https://github.com/mpi-forum/mpi-standard/pull/161 PR@168: https://github.com/mpi-forum/mpi-standard/pull/168 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

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Binding of predefined handles
by Marc-André Hermanns 08 Jul '20

08 Jul '20

Dear all, Howard, Dan, and I discussed the binding problem on Monday during the sessions WG time slot (thanks again for the time and input) and we came to quite a change in direction this errata is going. We were discussing what was available when for predefined handles (contemplating what *link-time constant* means) and live-testing a bit with Open-MPI. Result was that a test with MPI_Comm comm = MPI_COMM_WORLD; MPI_Init(...); MPI_Send(..., comm); works as we would expect from a link-time constant, in that the value (of the handle, not necessarily the object behind it) is known to MPI before Init and does not change. That gave rise to the question, "If that is possible, what prevents the implementation of 'lazy binding' for an MPI libary?" So this would be a question to all implementors on the list. I updated the Errata with a new suggested text (now actually allowing binding to predefined handles at any time between MPI_T initialization and finalization, as a start for discussing this thoroughly before September. https://github.com/mpi-forum/mpi-standard/pull/161/files#diff-f6fa82f9df45c… The core idea here is that, as a library should always be able to tell apart a predefined handle from a user-defined one, it could catch any binding and postpone it until the handle is initialized. 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

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Re: [mpiwg-tools] Meeting reminder: Jul 02, 2020 (today)
by Marc-André Hermanns 03 Jul '20

03 Jul '20

Hi all, I uploaded the minutes of yesterday's call to: https://github.com/mpiwg-tools/tools-issues/wiki/Notes-2020-07-03 Feel free to add/correct/comment as appropriate. Cheers, Marc-Andre On 02.07.20 13:57, Marc-André Hermanns via mpiwg-tools wrote: > Dear all, > > @John D.: due to the Errata discussion (while memory is still fresh), > I would skip the Handle discussion and would continue with that next > week. Is that OK for you? > > This is a reminder of our regularly scheduled call today: > > Jul 02 at 8 am Pacific / 11 am Eastern / 5pm CET. > > Webex Info: > https://github.com/mpiwg-tools/mpi-standard/wiki > > *NOTE*: The WebEx information moved to a non-public wiki. You have to > be logged into Github *and* have to have access to the private Tools > WG repositories. If you need access contact me. > > Agenda: > ------- > - Aftermath of MPI Forum Voting Meeting: > > - Ticket #160/PR#161: Wordsmith the sentence in positive language > > - Ticket #268/PR#168: Completely rethink what is to be said. > Potentially eliminate everything before "e.g." > > - QMPI (if time permits) > > PR#161: https://github.com/mpi-forum/mpi-standard/pull/161 > PR@168: https://github.com/mpi-forum/mpi-standard/pull/168 > > Cheers, > Marc-Andre > > > _______________________________________________ > mpiwg-tools mailing list > mpiwg-tools(a)lists.mpi-forum.org > https://lists.mpi-forum.org/mailman/listinfo/mpiwg-tools > -- 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

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Meeting reminder: Jul 02, 2020 (today)
by Marc-André Hermanns 02 Jul '20

02 Jul '20

Dear all, @John D.: due to the Errata discussion (while memory is still fresh), I would skip the Handle discussion and would continue with that next week. Is that OK for you? This is a reminder of our regularly scheduled call today: Jul 02 at 8 am Pacific / 11 am Eastern / 5pm CET. Webex Info: https://github.com/mpiwg-tools/mpi-standard/wiki *NOTE*: The WebEx information moved to a non-public wiki. You have to be logged into Github *and* have to have access to the private Tools WG repositories. If you need access contact me. Agenda: ------- - Aftermath of MPI Forum Voting Meeting: - Ticket #160/PR#161: Wordsmith the sentence in positive language - Ticket #268/PR#168: Completely rethink what is to be said. Potentially eliminate everything before "e.g." - QMPI (if time permits) PR#161: https://github.com/mpi-forum/mpi-standard/pull/161 PR@168: https://github.com/mpi-forum/mpi-standard/pull/168 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

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