June 2020 - mpi-forum - mailman3.cels.anl.gov

Hardware Topologies Working Group Announcements for the June Meeting
by Guillaume Mercier 12 Jun '20

12 Jun '20

Hi all, I'd like to make a couple of announcements for the upcoming Voting Meeting (aka Exceptional Virtual Meeting) : *second votes for: -PR1#42 (https://github.com/mpi-forum/mpi-standard/pull/142) : Guided Mode for Hardware Communicators Creation -PR#148 (https://github.com/mpi-forum/mpi-standard/pull/148) Unguided Mode for Hardware Communicators Creation * A reading for issue #120 (https://github.com/mpi-forum/mpi-issues/issues/120) (PR#98 https://github.com/mpi-forum/mpi-standard/pull/98) : MPI_Cart_create_weighted / Topology aware Cartesian communicators This reading will deal with the last changes made since the Portland meeting. We will request a no-no votes for this last item too. Regards Guillaume

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Procedures Reading and Vote Announcements for June 2020 Meeting
by Wesley Bland 10 Jun '20

10 Jun '20

Hi all, I’d like to announce formal readings and votes for the procedures changes that I read earlier today. For both of these proposals, I’ve made changes based on the feedback from the group so they are hopefully both acceptable to everyone. Please have a look and make any comments on the PR before Monday if there’s anything that’s still unclear. Proceedings PR #6 <https://github.com/mpi-forum/procedures/pull/6> - Update to RCM/FRM rules for GitHub Proceedings PR #7 <https://github.com/mpi-forum/procedures/pull/7> - Add procedures for officer elections Thanks, Wes

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Virtual MPI Forum Meeting Today/Wednesday June 10th 10am US Central Time
by Martin Schulz 10 Jun '20

10 Jun '20

Hi all, Just as a reminder (and as Rolf also already sent around yesterday), we have our next MPI Forum Virtual Meeting today (Wednesday) at the usual time at 10am US Central Time. The access link is, as usual, on the github page linked from the forum virtual meeting page. Agenda: - General updates - Suggested update to the rules to enable officer elections - MPI_Cart/Dims_create_weighted / Topology aware Cartesian communicators (Issue #120, as already announced by Rold yesterday) - Schedule other topics for virtual meetings, as needed If there are any other issues that we should discuss, please let Wesley and me know. As a reminder, there are several issues that require feedback from all chapter committees - they are assigned to all chapter chairs, but of course everyone in the CC should take a look at these as well. Wesley added a checkbox list into these tickets, so that CCs can check off a ticket once their chapter is done. 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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Re: [Mpi-forum] Virtual MPI Forum Meeting Tomorrow/Wednesday June 10, 10am US Central Time
by Rolf Rabenseifner 09 Jun '20

09 Jun '20

Hi all, As a reminder, we have our next MPI Forum Virtual Meeting tomorrow (Wednesday) at the usual time at 10am US Central Time. The access link is, as usual, on the github page linked from the forum virtual meeting page. The main topic is a discussion on ticket #120, the new MPI_Cart/Dims_create_weighted / Topology aware Cartesian communicators https://github.com/mpi-forum/mpi-issues/issues/120 This is another one of the last ticket(s) for consideration for MPI 4.0 and I hope that the text is now stable. it includes all the small changes from the comments/suggestions from the MPI Forum at the Portland meeting. It is an informal reading of the last changes to prepare for the official reading in the Exceptional Virtual meeting end of June. It would be helpful to get a comprehensive feedback from the entire forum. Hence, it would be great if we could get a broad participation in the call. The meeting will start with Wesley: "Additional MPI Forum Procedures Discussions" This is from Martin's usual reminder email: If there are any other issues that we should discuss, please let Wesley and Martin know. As a reminder, there are several issues that require feedback from all chapter committees - they are assigned to all chapter chairs, but of course everyone in the CC should take a look at these as well. Wesley added a checkbox list into these tickets, so that CCs can check off a ticket once their chapter is done. Best regards Rolf -- Dr. Rolf Rabenseifner . . . . . . . . . .. email rabenseifner(a)hlrs.de . High Performance Computing Center (HLRS) . phone ++49(0)711/685-65530 . University of Stuttgart . . . . . . . . .. fax ++49(0)711 / 685-65832 . Head of Dpmt Parallel Computing . . . www.hlrs.de/people/rabenseifner . Nobelstr. 19, D-70550 Stuttgart, Germany . . . . (Office: Room 1.307) .

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Additional MPI Forum Procedures Discussions
by Wesley Bland 08 Jun '20

08 Jun '20

Hi all, Now that we’ve made the urgent changes to be able to hold exceptional virtual meetings, I’d like to discuss two additional sets of changes. First, during the discussion of the virtual meetings, we realized and I mentioned that there were some minor changes necessary to the RCM/FRM procedures for completing an MPI Standard Document. Those changes are available here: Update to RCM/FRM rules for GitHub <https://github.com/mpi-forum/procedures/pull/6> Second, Martin and I have been discussing the need for a more formal elections system for a while to get ready for the next round of MPI Standard Documents so there would be a more clear process for replacing officers or confirming them in their existing roles (to avoid the more on-the-fly discussion that we had after MPI 3.1). I’m proposing some text to formalize that here: https://github.com/mpi-forum/procedures/pull/7 <https://github.com/mpi-forum/procedures/pull/7> A very short version of what’s in the proposal is: Add a definition for MPI Forum Treasurer (to replace the current role of Meeting Convener, which has largely morphed into treasurer over the past few years anyway). Officers serve through one “major release cycle” (from MPI 4.0 -> MPI 5.0) to provide longer term continuity by default. Nominations open at the Release Candidate Meeting and elections occur at the Final Ratification Meeting for the major versions. Elections are a simple majority (not plurality) to avoid deadlock. Officers may vacate their positions if needed and will be replaced at the next voting meeting. These rules would apply to the four “officer” positions that the MPI Forum currently recognizes: Chair Secretary Treasurer Document Editor All of the details are available in the relatively short pull request so please go over that when you have a chance. I’ll present both of these pull requests briefly on Wednesday during the virtual meeting before we start the main topic from Rolf on Virtual Topologies. Thanks, Wes

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Editor Pass Reading and Vote Announcements
by Wesley Bland 05 Jun '20

05 Jun '20

Hi all, Here’s the list of issues that have all been informally read as part of the general cleanup work we’ve been doing in virtual meetings for the last couple of months. Unless someone specifically steps up to contradict me, this will serve as an announcement for each of these items for an official reading during the June meeting and the person who will do the reading. Errata Reading and Vote Joseph - Omission: p. 440 - WIN_DETATCH Binding Fix · Issue #179 · mpi-forum/mpi-issues · GitHub <https://github.com/mpi-forum/mpi-issues/issues/179> PR: https://github.com/mpi-forum/mpi-standard/pull/229 <https://github.com/mpi-forum/mpi-standard/pull/229> PR: https://github.com/mpi-forum/mpi-standard/pull/230 <https://github.com/mpi-forum/mpi-standard/pull/230> Joseph - Omission: p. 439 - WIN_ATTACH_ Binding Fix · Issue #178 · mpi-forum/mpi-issues · GitHub <https://github.com/mpi-forum/mpi-issues/issues/178> PR: https://github.com/mpi-forum/mpi-standard/pull/229 <https://github.com/mpi-forum/mpi-standard/pull/229> Dan - Error: Section 3.3.2 - p. 38 - Replace C process · Issue #167 · mpi-forum/mpi-issues · GitHub <https://github.com/mpi-forum/mpi-issues/issues/167> PR: https://github.com/mpi-forum/mpi-standard/pull/201 <https://github.com/mpi-forum/mpi-standard/pull/201> Dan - Clarification: Section 3.2.2 - p. 27 - Datatype Footnote · Issue #252 · mpi-forum/mpi-issues · GitHub <https://github.com/mpi-forum/mpi-issues/issues/252> PR: https://github.com/mpi-forum/mpi-standard/pull/224 <https://github.com/mpi-forum/mpi-standard/pull/224> Dan - Update: Section 3.7.5 - p. 60 - Replace C-bias with LIS · Issue #190 · mpi-forum/mpi-issues · GitHub <https://github.com/mpi-forum/mpi-issues/issues/190> PR: https://github.com/mpi-forum/mpi-standard/pull/225 <https://github.com/mpi-forum/mpi-standard/pull/225> Wes - Update: Section 17.1 - p. 635 - Update Backward Incompatibility Text · Issue #218 · mpi-forum/mpi-issues · GitHub <https://github.com/mpi-forum/mpi-issues/issues/218> PR https://github.com/mpi-forum/mpi-standard/pull/183 <https://github.com/mpi-forum/mpi-standard/pull/183> Wes - Clarification: Section 11.3.5 - p. 458 - Error in Status Field Clarification · Issue #262 · mpi-forum/mpi-issues · GitHub <https://github.com/mpi-forum/mpi-issues/issues/262> PR: https://github.com/mpi-forum/mpi-standard/pull/210 <https://github.com/mpi-forum/mpi-standard/pull/210> Wes - Clarification: Section 11.7 - p. 482 - MPI Exception Clarification · Issue #263 · mpi-forum/mpi-issues · GitHub <https://github.com/mpi-forum/mpi-issues/issues/263> PR: https://github.com/mpi-forum/mpi-standard/pull/177 <https://github.com/mpi-forum/mpi-standard/pull/177> Wes - Error: Section 12.4.3 - p. 515 - MPI_INIT argc/argv values · Issue #168 · mpi-forum/mpi-issues · GitHub <https://github.com/mpi-forum/mpi-issues/issues/168> PR: https://github.com/mpi-forum/mpi-standard/pull/182 <https://github.com/mpi-forum/mpi-standard/pull/182> George - Error in text: Section 4.1.1 - p. 87 - INTEGER*8 Extension · Issue #171 · mpi-forum/mpi-issues · GitHub <https://github.com/mpi-forum/mpi-issues/issues/171> PR: https://github.com/mpi-forum/mpi-standard/pull/196 <https://github.com/mpi-forum/mpi-standard/pull/196> George - Omission: p. 387 - Initialized Binding Fix · Issue #176 · mpi-forum/mpi-issues · GitHub <https://github.com/mpi-forum/mpi-issues/issues/176> PR: https://github.com/mpi-forum/mpi-standard/pull/195 <https://github.com/mpi-forum/mpi-standard/pull/195> George - Oversight: Section 8.7 - p. 383 - Escape Spaces in Arguments · Issue #181 · mpi-forum/mpi-issues · GitHub <https://github.com/mpi-forum/mpi-issues/issues/181> PR: https://github.com/mpi-forum/mpi-standard/pull/172 <https://github.com/mpi-forum/mpi-standard/pull/172> George - Clarification: Example 4.17 - p. 128 - Example Comment · Issue #254 · mpi-forum/mpi-issues · GitHub <https://github.com/mpi-forum/mpi-issues/issues/254> PR: https://github.com/mpi-forum/mpi-standard/pull/181 <https://github.com/mpi-forum/mpi-standard/pull/181> Guillaume - Update: Section 6.2.4 - p. 248 - Remove Host Process · Issue #196 · mpi-forum/mpi-issues · GitHub <https://github.com/mpi-forum/mpi-issues/issues/196> PR: https://github.com/mpi-forum/mpi-standard/pull/176 <https://github.com/mpi-forum/mpi-standard/pull/176> Marc-Andre - Clarification: Section 14.3.7 - p. 615 - MPI_T Session Impact Clarifications · Issue #268 · mpi-forum/mpi-issues · GitHub <https://github.com/mpi-forum/mpi-issues/issues/268> PR: https://github.com/mpi-forum/mpi-standard/pull/168 <https://github.com/mpi-forum/mpi-standard/pull/168> Martin - Error: Section 13.4.1 - p. 535 - MPI_FILE_READ Equivalency · Issue #169 · mpi-forum/mpi-issues · GitHub <https://github.com/mpi-forum/mpi-issues/issues/169> PR: https://github.com/mpi-forum/mpi-standard/pull/216 <https://github.com/mpi-forum/mpi-standard/pull/216> Julien - Clarification: Section 5.1 - p. 144 - Collective Synchronization · Issue #257 · mpi-forum/mpi-issues · GitHub <https://github.com/mpi-forum/mpi-issues/issues/257> PR: https://github.com/mpi-forum/mpi-standard/pull/222 <https://github.com/mpi-forum/mpi-standard/pull/222> Julien - Question: Section 5.12.4 - p. 206 - MPI_ISCATTERV sendcounts and displs Consistency · Issue #182 · mpi-forum/mpi-issues · GitHub <https://github.com/mpi-forum/mpi-issues/issues/182> PR: https://github.com/mpi-forum/mpi-standard/pull/223 <https://github.com/mpi-forum/mpi-standard/pull/223> Reading Wes - Clarification: Section 8.5 - p. 377 - Error Class and Code Advice to Implementors · Issue #259 · mpi-forum/mpi-issues · GitHub <https://github.com/mpi-forum/mpi-issues/issues/259> PR: https://github.com/mpi-forum/mpi-standard/pull/178 <https://github.com/mpi-forum/mpi-standard/pull/178> Thanks, Wes

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Virtual MPI Forum Meeting Tomorrow/Wednesday June 3rd 10am US Central Time
by Martin Schulz 02 Jun '20

02 Jun '20

Hi all, As a reminder, we have our next MPI Forum Virtual Meeting tomorrow (Wednesday) at the usual time at 10am US Central Time. The access link is, as usual, on the github page linked from the forum virtual meeting page. The main topic is a discussion on ticket #96, the update of the terms chapter: https://github.com/mpi-forum/mpi-issues/issues/96 <https://github.com/mpi-forum/mpi-issues/issues/96> This is one of the (or rather the) last ticket(s) for consideration for MPI 4.0 and it would be helpful to get a comprehensive feedback from the entire forum. Hence, it would be great if we could get a broad participation in the call. Additional agenda if time permits: - Go over progress made on assigned clean-up tickets - Schedule other topics for virtual meetings, as needed If there are any other issues that we should discuss, please let Wesley and me know. As a reminder, there are several issues that require feedback from all chapter committees - they are assigned to all chapter chairs, but of course everyone in the CC should take a look at these as well. Wesley added a checkbox list into these tickets, so that CCs can check off a ticket once their chapter is done. 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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June MPI Forum Votes and Reading Announcements
by Wesley Bland 01 Jun '20

01 Jun '20

Hi all, I’d like to announce a bunch of readings a votes for the upcoming meeting. The issue and pull request links can be found for each below. Thanks, Wes Readings #263 <https://github.com/mpi-forum/mpi-issues/issues/263> - Clarification: Section 11.7 - p. 482 - MPI Exception Clarification (Pull Request <https://github.com/mpi-forum/mpi-standard/pull/177>) #168 <https://github.com/mpi-forum/mpi-issues/issues/168> - Error: Section 12.4.3 - p. 515 - MPI_INIT argc/argv values (Pull Request <https://github.com/mpi-forum/mpi-standard/pull/182>) #218 <https://github.com/mpi-forum/mpi-issues/issues/218> - Update: Section 17.1 - p. 635 - Update Backward Incompatibility Text (Pull Request <https://github.com/mpi-forum/mpi-standard/pull/183>) #262 <https://github.com/mpi-forum/mpi-issues/issues/262> - Clarification: Section 11.3.5 - p. 458 - Error in Status Field Clarification (Pull Request <https://github.com/mpi-forum/mpi-standard/pull/210>) #259 <https://github.com/mpi-forum/mpi-issues/issues/259> - Clarification: Section 8.5 - p. 377 - Error Class and Code Advice to Implementors (Pull Request <https://github.com/mpi-forum/mpi-standard/pull/178>) #283 <https://github.com/mpi-forum/mpi-issues/issues/283> - Add MPI_Remove_error_class, MPI_Remove_error_code, MPI_Remove_error_string (Pull Request <https://github.com/mpi-forum/mpi-standard/pull/166>) Errata Votes #263 <https://github.com/mpi-forum/mpi-issues/issues/263> - Clarification: Section 11.7 - p. 482 - MPI Exception Clarification (Pull Request <https://github.com/mpi-forum/mpi-standard/pull/177>) #168 <https://github.com/mpi-forum/mpi-issues/issues/168> - Error: Section 12.4.3 - p. 515 - MPI_INIT argc/argv values (Pull Request <https://github.com/mpi-forum/mpi-standard/pull/182>) #218 <https://github.com/mpi-forum/mpi-issues/issues/218> - Update: Section 17.1 - p. 635 - Update Backward Incompatibility Text (Pull Request <https://github.com/mpi-forum/mpi-standard/pull/183>) #262 <https://github.com/mpi-forum/mpi-issues/issues/262> - Clarification: Section 11.3.5 - p. 458 - Error in Status Field Clarification (Pull Request <https://github.com/mpi-forum/mpi-standard/pull/210>) 2nd Votes #143 <https://github.com/mpi-forum/mpi-issues/issues/143> - Create MPI_INFO_ENV before MPI_INIT (Pull Request <https://github.com/mpi-forum/mpi-standard/pull/126>)

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