March 2018 - mpiwg-ft - mailman3.cels.anl.gov

FTWG Con Call 2018-03-21 Meeting Notes
by Bland, Wesley 21 Mar '18

21 Mar '18

Here's the notes from today's meeting: Note that we are cancelling next week's call due to the SC submission deadline and to give us time to work on reorganizing the text for the proposals. https://github.com/mpiwg-ft/ft-issues/wiki/2018-03-21 Thanks, Wesley Attendees • Intel - Wesley, Rob • Argonne - Yanfei • UTK - Aurelien • LLNL - Ignacio Agenda • Noncatastrophic Errors and Error Handling Wrapup • ULFM Plans Non Catastrophic Errors • Made some minor edits to the proposal based on feedback from February 2018 meeting • We'll need to read for a no-no vote at the June 2018 meeting Error Handling Wrap-up • 1st vote passed even after discussion of intercommunicator error handling • 2nd vote scheduled for June 2018 meeting ULFM • Aurelien attempted a reading of the full ticket • Feedback started by Martin but echoed by others in the forum (Dan, Tony, etc.) was that they are still uncomfortable with this proposal and would like to see it broken into multiple pieces: • Error Notification and Discovery • New error class: MPI_ERR_PROC_FAILED • New API functions: MPI_COMM_FAILURE_ACK & MPI_COMM_FAILURE_GET_ACKED • Agreement • MPI_COMM_AGREE • Recovery • MPI_COMM_REVOKE & MPI_COMM_SHRINK • These pieces are the most contentious, particularly for Martin who believe the asynchronous failure notification but synchronous recovery introduces a deadlock problem. • 1 & 2 above can probably be accepted quickly and could form the basis of basic-FT to provide reliable a point-to-point model. • We would need to keep working to figure out the best way to repair/replace communicators to enable collectives, RMA, Files, etc. • Ignacio mentioned user that really only care about point-to-point so they can construct their own collectives. • As a WG, we agreed to work on splitting ULFM as described above. • Aurelien will start this work and bring it back to the WG for future discussion. • We don't expect a lot of progress over the next two weeks during the SC submission period.

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Canceled: Fault Tolerance Working Group Con Call
by Bland, Wesley 21 Mar '18

21 Mar '18

Cancel due to SC deadline and to give us time to work on proposal reorganization

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FTWG Con Call Today
by Bland, Wesley 21 Mar '18

21 Mar '18

The Fault Tolerance Working Group’s weekly con call is today at 12:00 PM Eastern. Today's agenda: * Post-mortem of the F2F meeting in Portland * Discuss next steps for ULFM and related efforts * Wrap up next steps for non-ULFM issues If there's something else that people would like to discuss, please just send an email to the WG so we can get it on the agenda. Thanks, Wesley ......................................................................................................................................... Join from PC, Mac, Linux, iOS or Android: https://tennessee.zoom.us/j/632356722?pwd=lI4%2F169CGcewIumekTziMw%3D%3D Password: mpiforum Or iPhone one-tap (US Toll): +14086380968,632356722# or +16465588656,632356722# Or Telephone: Dial: +1 408 638 0968 (US Toll) or +1 646 558 8656 (US Toll) Meeting ID: 632 356 722 International numbers available: https://tennessee.zoom.us/zoomconference?m=GscM59o_Qoig8v4aJl1OrsnXL-7Blrke Or an H.323/SIP room system: H.323: 162.255.37.11 (US West) or 162.255.36.11 (US East) Meeting ID: 632 356 722 Password: 366244 SIP: 632356722(a)zoomcrc.com Password: 366244 .........................................................................................................................................

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Re: [mpiwg-ft] Meetings Next Two Weeks (2018-03-07 and 2018-03-14)
by Aurelien Bouteiller 07 Mar '18

07 Mar '18

Hi Wesley, I will also be unavailable for the next two weeks so that suits my agenda as well. Best, Aurelien > On Mar 6, 2018, at 09:35, Bland, Wesley <wesley.bland(a)intel.com> wrote: > > Hi all, > > I won't be able to attend the calls for the next two weeks. Usually when I can't come, we just cancel them, but if someone else wants to run the meetings, that'd be great. Otherwise, we can get back together on 2018-03-21. > > If I don't hear something on the mailing list by the end of the day, I'll assume that we'll just cancel the next two meetings. > > Thanks, > Wesley > _______________________________________________ > mpiwg-ft mailing list > mpiwg-ft(a)lists.mpi-forum.org > https://lists.mpi-forum.org/mailman/listinfo/mpiwg-ft

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Fault Tolerance Working Group Con Call
by Bland, Wesley 06 Mar '18

06 Mar '18

Weekly con call to discuss Fault Tolerance Topics as they relate to the MPI Standard. I’ll try to update the agenda before the call weekly (as opposed to the old way of sending a reminder email). === Join from PC, Mac, Linux, iOS or Android: https://tennessee.zoom.us/j/632356722?pwd=lI4%2F169CGcewIumekTziMw%3D%3D Password: mpiforum Or iPhone one-tap (US Toll): +14086380968,632356722# or +16465588656,632356722# Or Telephone: Dial: +1 408 638 0968 (US Toll) or +1 646 558 8656 (US Toll) Meeting ID: 632 356 722 International numbers available: https://tennessee.zoom.us/zoomconference?m=GscM59o_Qoig8v4aJl1OrsnXL-7Blrke Or an H.323/SIP room system: H.323: 162.255.37.11 (US West) or 162.255.36.11 (US East) Meeting ID: 632 356 722 Password: 366244 SIP: 632356722(a)zoomcrc.com Password: 366244

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Fault Tolerance Working Group Con Call
by Bland, Wesley 06 Mar '18

06 Mar '18

Weekly con call to discuss Fault Tolerance Topics as they relate to the MPI Standard. I’ll try to update the agenda before the call weekly (as opposed to the old way of sending a reminder email). === Join from PC, Mac, Linux, iOS or Android: https://tennessee.zoom.us/j/632356722?pwd=lI4%2F169CGcewIumekTziMw%3D%3D Password: mpiforum Or iPhone one-tap (US Toll): +14086380968,632356722# or +16465588656,632356722# Or Telephone: Dial: +1 408 638 0968 (US Toll) or +1 646 558 8656 (US Toll) Meeting ID: 632 356 722 International numbers available: https://tennessee.zoom.us/zoomconference?m=GscM59o_Qoig8v4aJl1OrsnXL-7Blrke Or an H.323/SIP room system: H.323: 162.255.37.11 (US West) or 162.255.36.11 (US East) Meeting ID: 632 356 722 Password: 366244 SIP: 632356722(a)zoomcrc.com Password: 366244

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Meetings Next Two Weeks (2018-03-07 and 2018-03-14)
by Bland, Wesley 06 Mar '18

06 Mar '18

Hi all, I won't be able to attend the calls for the next two weeks. Usually when I can't come, we just cancel them, but if someone else wants to run the meetings, that'd be great. Otherwise, we can get back together on 2018-03-21. If I don't hear something on the mailing list by the end of the day, I'll assume that we'll just cancel the next two meetings. Thanks, Wesley

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Re: [mpiwg-ft] FTWG Notes from F2F WG Session
by Bland, Wesley 01 Mar '18

01 Mar '18

I'm in progress on that. I have a few notes that I'm putting up on the main forum page that I'll add to our WG. My notes may not be complete though since I was participating at the time so please feel free to add more. > On Mar 1, 2018, at 9:38 AM, Ignacio Laguna <lagunaperalt1(a)llnl.gov> wrote: > > Do we want to add notes from the plenary as well? The suggestions from the reading I think were really useful and will help us improve the proposals later. > > Ignacio > > On 2/28/18 8:30 AM, Bland, Wesley wrote: >> The notes from yesterday's WG session are now posted on the wiki: >> https://github.com/mpiwg-ft/ft-issues/wiki/2018-02-27 >> _______________________________________________ >> mpiwg-ft mailing list >> mpiwg-ft(a)lists.mpi-forum.org >> https://lists.mpi-forum.org/mailman/listinfo/mpiwg-ft

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Re: [mpiwg-ft] FTWG Notes from F2F WG Session
by Ignacio Laguna 01 Mar '18

01 Mar '18

Do we want to add notes from the plenary as well? The suggestions from the reading I think were really useful and will help us improve the proposals later. Ignacio On 2/28/18 8:30 AM, Bland, Wesley wrote: > The notes from yesterday's WG session are now posted on the wiki: > > https://github.com/mpiwg-ft/ft-issues/wiki/2018-02-27 > _______________________________________________ > mpiwg-ft mailing list > mpiwg-ft(a)lists.mpi-forum.org > https://lists.mpi-forum.org/mailman/listinfo/mpiwg-ft >

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