May 2019 - mpi-forum - mailman3.cels.anl.gov

MPI Standard Now Has an MPI-3 Branch and an MPI-4 Branch
by Wesley Bland 30 May '19

30 May '19

Hi all, I want to start by saying that this email is targeted at those writing proposals for the MPI Forum and should not be read as a plan for whether the MPI Forum will be releasing a 3.x version or a 4.x version next. I recently realized that we’ve been merging all of our proposals into the mpi-3.x branch lately, including those which explicitly say that they should not be in a 3.x release. To resolve this, I’ve reverted the commits containing MPI-4 text and moved them to a new branch called mpi-4.x. What this means for everyone else is that if you have a proposal targeted at MPI-4, you will need to make a small change to your pull request on GitHub and you’ll need to make a small change to your workflow when keeping your pull request up to date. The GitHub change is trivial (THIS WILL TAKE LESS THAN 30 SECONDS SO PLEASE DO IT RIGHT NOW!). There is a good help page from the GitHub folks here: https://help.github.com/en/articles/changing-the-base-branch-of-a-pull-requ… <https://help.github.com/en/articles/changing-the-base-branch-of-a-pull-requ…>. Please follow that and change your base branch from mpi-3.x to mpi-4.x. When updating the pull request (branch) in the future, instead of rebasing onto or merging with the mpi-3.x branch, you’ll use the mpi-4.x branch. Those commands look like this: For rebasing: git fetch mpi-forum # Assumes your remote that points to the “official” repository is named mpi-forum git checkout your_branch git rebase mpi-forum/mpi-4.x For merging: git fetch mpi-forum # Assumes your remote that points to the “official” repository is named mpi-forum git checkout your_branch git merge mpi-forum/mpi-4.x If you have any questions, feel free to ping me. I’m happy to help out. Thanks, Wesley

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MPI Forum Plenary Agenda / Tomorrow (Wednesday)
by Martin Schulz 28 May '19

28 May '19

Hi all, As listed on the agenda, we will start tomorrow at 8:30 local time with a plenary session. The rooms will be available starting at 8am and we hope/assume breakfast as well. However, as some attendees had problems with their flights we will have to shuffle the order of the plenaries a bit. If one of the readings is ready to go early (i.e., tomorrow first thing), 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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Re: [Mpi-forum] Webex for Tools WG
by Jeff Squyres (jsquyres) 28 May '19

28 May '19

Track 2 is tools. > On May 28, 2019, at 2:17 PM, Jithin Jose via mpi-forum <mpi-forum(a)lists.mpi-forum.org> wrote: > > Hi Marc Andre, > > We are just setting it up, please wait for a few more minutes. > > Thanks. > Jithin > > -----Original Message----- > From: mpi-forum <mpi-forum-bounces(a)lists.mpi-forum.org> On Behalf Of Marc-Andre Hermanns via mpi-forum > Sent: Tuesday, May 28, 2019 2:12 PM > To: MPI Forum <mpi-forum(a)lists.mpi-forum.org> > Cc: Marc-Andre Hermanns <hermanns(a)jara.rwth-aachen.de> > Subject: [Mpi-forum] Webex for Tools WG > > Hello to everyone in Chicago, > > which Webex Track is used for the Tools WG? > > I tried both, and on both I was the only participant. > > Cheers, > Marc-Andre > -- > Dr. Marc-Andre Hermanns > Jülich Aachen Research Alliance, > High Performance Computing (JARA-HPC) > Jülich Supercomputing Centre (JSC) > > Wilhelm-Johnen-Str. > 52425 Jülich > Germany > > Phone: +49 2461 61 2509 | +49 241 80 24381 > Fax: +49 2461 80 6 99753 > https://nam06.safelinks.protection.outlook.com/?url=www.jara.org%2Fjara-hpc… > email: hermanns(a)jara.rwth-aachen.de > > _______________________________________________ > mpi-forum mailing list > mpi-forum(a)lists.mpi-forum.org > https://lists.mpi-forum.org/mailman/listinfo/mpi-forum -- Jeff Squyres jsquyres(a)cisco.com

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Re: [Mpi-forum] Webex for Tools WG
by Jithin Jose 28 May '19

28 May '19

Hi Marc Andre, We are just setting it up, please wait for a few more minutes. Thanks. Jithin -----Original Message----- From: mpi-forum <mpi-forum-bounces(a)lists.mpi-forum.org> On Behalf Of Marc-Andre Hermanns via mpi-forum Sent: Tuesday, May 28, 2019 2:12 PM To: MPI Forum <mpi-forum(a)lists.mpi-forum.org> Cc: Marc-Andre Hermanns <hermanns(a)jara.rwth-aachen.de> Subject: [Mpi-forum] Webex for Tools WG Hello to everyone in Chicago, which Webex Track is used for the Tools WG? I tried both, and on both I was the only participant. Cheers, Marc-Andre -- Dr. Marc-Andre Hermanns Jülich Aachen Research Alliance, High Performance Computing (JARA-HPC) Jülich Supercomputing Centre (JSC) Wilhelm-Johnen-Str. 52425 Jülich Germany Phone: +49 2461 61 2509 | +49 241 80 24381 Fax: +49 2461 80 6 99753 https://nam06.safelinks.protection.outlook.com/?url=www.jara.org%2Fjara-hpc… email: hermanns(a)jara.rwth-aachen.de

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Webex for Tools WG
by Marc-Andre Hermanns 28 May '19

28 May '19

Hello to everyone in Chicago, which Webex Track is used for the Tools WG? I tried both, and on both I was the only participant. Cheers, Marc-Andre -- Dr. Marc-Andre Hermanns Jülich Aachen Research Alliance, High Performance Computing (JARA-HPC) Jülich Supercomputing Centre (JSC) Wilhelm-Johnen-Str. 52425 Jülich Germany Phone: +49 2461 61 2509 | +49 241 80 24381 Fax: +49 2461 80 6 99753 www.jara.org/jara-hpc email: hermanns(a)jara.rwth-aachen.de

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Webex for Forum Meeting
by Martin Schulz 20 May '19

20 May '19

Hi Jeff, Could you please again setup Webex Sessions for the forum meeting? We’ll have two tracks on Tuesday PM and Wednesday PM, but one should do for the rest. Thanks! Martin PS: How should we link them? Should we also link them from the Wiki with login? — 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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MPI Forum Agenda for May
by Martin Schulz 19 May '19

19 May '19

Hi all, I have posted the tentative agenda for the upcoming meeting. Since we have quite some plenary requests, I we need to keep the WG time to one day in total, which I have (due to room availability reasons) scheduled for Tuesday and Wednesday afternoon - i.e., Wednesday morning is plenary time. This does mean that we are currently 3 way with WGs on Wednesday afternoon, which I hope will work out, worst case using the open discussion areas in the building. However, all WGs, please take a look at the schedule and let me know if you actually intend to use the whole time allotted or if we can shorten some. As for plenaries, I think I caught all requests, but please double check and let me know if there are discrepancies. As for the order Thanks and see you soon, Martin PS: Please don’t forget to register in the next few days or you won’t get into the building. — 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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Re: [Mpi-forum] Tools working group
by Marc-Andre Hermanns 14 May '19

14 May '19

Hi Kathryn, thanks for the announcement. What's the plan for the remaining changes? Shall we talk briefly? Cheers, Marc-Andre On 14.05.19 21:46, Mohror, Kathryn via mpi-forum wrote: > Hi all, > > > > The tools working group will read the following two proposals at the > next meeting: > > > > 1. https://github.com/mpi-forum/mpi-issues/issues/79 (pull request > https://github.com/mpi-forum/mpi-standard/pull/33) > 2. https://github.com/mpi-forum/mpi-issues/issues/115 (pull request > https://github.com/mpi-forum/mpi-standard/pull/110) > > > > Kathryn > > > _______________________________________________ > mpi-forum mailing list > mpi-forum(a)lists.mpi-forum.org > https://lists.mpi-forum.org/mailman/listinfo/mpi-forum > -- Dr. Marc-Andre Hermanns Jülich Aachen Research Alliance, High Performance Computing (JARA-HPC) Jülich Supercomputing Centre (JSC) Wilhelm-Johnen-Str. 52425 Jülich Germany Phone: +49 2461 61 2509 | +49 241 80 24381 Fax: +49 2461 80 6 99753 www.jara.org/jara-hpc email: hermanns(a)jara.rwth-aachen.de

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Tools working group
by Mohror, Kathryn 14 May '19

14 May '19

Hi all, The tools working group will read the following two proposals at the next meeting: 1. https://github.com/mpi-forum/mpi-issues/issues/79 (pull request https://github.com/mpi-forum/mpi-standard/pull/33) 2. https://github.com/mpi-forum/mpi-issues/issues/115 (pull request https://github.com/mpi-forum/mpi-standard/pull/110) Kathryn

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Partitioned Communication First Reading Announcement---Chicago
by Skjellum, Anthony 14 May '19

14 May '19

Dear MPI Forum Colleagues: The Persistent WG in collaboration with the Point-to-point WG plans to read a new proposal entitled "Partitioned Communication." https://github.com/mpi-forum/mpi-issues/issues/136 PR: https://github.com/mpi-forum/mpi-standard/pull/117 A brief explanation follows since this is new to many of you as a formal proposal for MPI-4: MPI currently provides all multi-threaded functionality through the existing interface that was designed primarily for single-threaded operation. There are no interfaces designed specifically to address the unique requirements of multi-threaded communication in MPI. Partitioned communication modes extend the behavior of persistent point-to-point communication using a non-local initialization call. Partitioned communication is "Partitioned" because it allows for multiple contributions of data to be made from potentially multiple threads/tasks to a single communication operation. This is the proposal formerly known as finepoints, which we've been working on for several years. Ryan Grant will lead this reading in Chicago. Regards, Tony Skjellum Anthony Skjellum, PhD Professor of Computer Science and Chair of Excellence Director, SimCenter University of Tennessee at Chattanooga (UTC) tony-skjellum(a)utc.edu [or skjellum(a)gmail.com] cell: 205-807-4968

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