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

Re: [mpiwg-persistence] Summary of Semantics for Partitioned Communication Operations
by Bangalore, Purushotham 15 Jul '20

15 Jul '20

Here are the other footnotes (I should have pasted them near footnote 20): 7) Addresses are cached on the request handle. 9) One shall not free or deallocate the bu er before the operation is freed, that is MPI_REQUEST_FREE returned. 14) Nonblocking procedure without an I pre fix. ===== I will move PREADY,...,PARRIVED after START... good suggestion. I also agree with "ic" for the PREADY, PARRIVED procedures. ________________________________ From: HOLMES Daniel <d.holmes(a)epcc.ed.ac.uk> Sent: Wednesday, July 15, 2020 12:42 PM To: Bangalore, Purushotham <puri(a)uab.edu> Cc: mpiwg-persistence(a)lists.mpi-forum.org <mpiwg-persistence(a)lists.mpi-forum.org>; mpiwg-semantic-terms(a)lists.mpi-forum.org <mpiwg-semantic-terms(a)lists.mpi-forum.org> Subject: Re: [mpiwg-persistence] Summary of Semantics for Partitioned Communication Operations Hi Puri, Thanks for this - a great way to provoke some progress (no pun intended). I would suggest: move the rows dealing with MPI_PREADY and MPI_PARRIVED between MPI_START and MPI_WAIT, i.e. in the approximate calling order. Also, I would add “ic” for the new MPI_PREADY, MPI_PARRIVED, etc procedures - because the operation is definitely incomplete at the point in time they are called, during the time interval of their entire execution, and at the point in time they return - there is no possibility they could be completing or freeing procedures. What are the other footnotes: 7, 9, and 14? (I could look them up but I’d have to choose the same draft version as you because the numbering changed recently.) 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 15 Jul 2020, at 18:24, Bangalore, Purushotham via mpiwg-persistence <mpiwg-persistence(a)lists.mpi-forum.org<mailto:[email protected]>> wrote: <MPI-semantics-appendix.xlsx>

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Re: [mpiwg-persistence] Summary of Semantics for Partitioned Communication Operations
by Skjellum, Anthony 15 Jul '20

15 Jul '20

We had a short meeting with Ryan and students---he advocates for a blocking PSYNC on both sides now... after start... before kernel launch on send side... 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 ________________________________ From: mpiwg-persistence <mpiwg-persistence-bounces(a)lists.mpi-forum.org> on behalf of HOLMES Daniel via mpiwg-persistence <mpiwg-persistence(a)lists.mpi-forum.org> Sent: Wednesday, July 15, 2020 1:42 PM To: Purushotham Bangalore <puri(a)uab.edu> Cc: mpiwg-semantic-terms(a)lists.mpi-forum.org <mpiwg-semantic-terms(a)lists.mpi-forum.org>; mpiwg-persistence(a)lists.mpi-forum.org <mpiwg-persistence(a)lists.mpi-forum.org> Subject: Re: [mpiwg-persistence] Summary of Semantics for Partitioned Communication Operations Hi Puri, Thanks for this - a great way to provoke some progress (no pun intended). I would suggest: move the rows dealing with MPI_PREADY and MPI_PARRIVED between MPI_START and MPI_WAIT, i.e. in the approximate calling order. Also, I would add “ic” for the new MPI_PREADY, MPI_PARRIVED, etc procedures - because the operation is definitely incomplete at the point in time they are called, during the time interval of their entire execution, and at the point in time they return - there is no possibility they could be completing or freeing procedures. What are the other footnotes: 7, 9, and 14? (I could look them up but I’d have to choose the same draft version as you because the numbering changed recently.) 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 15 Jul 2020, at 18:24, Bangalore, Purushotham via mpiwg-persistence <mpiwg-persistence(a)lists.mpi-forum.org<mailto:[email protected]>> wrote: <MPI-semantics-appendix.xlsx>

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Re: [mpiwg-persistence] Summary of Semantics for Partitioned Communication Operations
by HOLMES Daniel 15 Jul '20

15 Jul '20

Hi Puri, Thanks for this - a great way to provoke some progress (no pun intended). I would suggest: move the rows dealing with MPI_PREADY and MPI_PARRIVED between MPI_START and MPI_WAIT, i.e. in the approximate calling order. Also, I would add “ic” for the new MPI_PREADY, MPI_PARRIVED, etc procedures - because the operation is definitely incomplete at the point in time they are called, during the time interval of their entire execution, and at the point in time they return - there is no possibility they could be completing or freeing procedures. What are the other footnotes: 7, 9, and 14? (I could look them up but I’d have to choose the same draft version as you because the numbering changed recently.) 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 15 Jul 2020, at 18:24, Bangalore, Purushotham via mpiwg-persistence <mpiwg-persistence(a)lists.mpi-forum.org<mailto:[email protected]>> wrote: <MPI-semantics-appendix.xlsx>

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Summary of Semantics for Partitioned Communication Operations
by Bangalore, Purushotham 15 Jul '20

15 Jul '20

Hi All, I was planning to bring this topic at today's meeting. Since we did not meet, I would like all of you to review the attached spreadsheet and complete the corresponding columns for stages, completion, blocking/nonblocking, type of operation, and resources blocked/comment. I have copied the persistent point-to-point section of the table and used it as a starting point. Please review and let me know what you all think. For the operation column, I have entered ?-op. Do we need to define "pp-op" to denote partitioned communication operation? I have added a footnote that indicates the difference between persistent initialization functions and partitioned initialization functions. Thanks, Puri

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Canceled: MPI Persistent/Collective WGs Weekly Meeting
by Skjellum, Anthony 14 Jul '20

14 Jul '20

Conflicts with Forum Virtual Meeting, canceled.

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MPI Persistent/Collective WGs Weekly Meeting
by Skjellum, Anthony 14 Jul '20

14 Jul '20

[1.5 hours books, but starting @ 11am Eastern next week; have a 10am conflict sorry] Now, we use only zoom meetings: Hi there, Anthony Skjellum is inviting you to a scheduled Zoom meeting. Topic: Anthony Skjellum's Personal Meeting Room Join from PC, Mac, Linux, iOS or Android: https://tennessee.zoom.us/j/9916910516 Or iPhone one-tap (US Toll): +16468769923,9916910516# or +16699006833,9916910516# Or Telephone: Dial: +1 646 876 9923 (US Toll) +1 669 900 6833 (US Toll) Meeting ID: 991 691 0516 International numbers available: https://zoom.us/u/acVk33oBeV Or an H.323/SIP room system: H.323: 162.255.37.11 (US West) or 162.255.36.11 (US East) Meeting ID: 991 691 0516 SIP: 9916910516(a)zoomcrc.com

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Re: [mpiwg-persistence] MPI Persistent/Collective WGs Weekly Meeting
by Skjellum, Anthony 09 Jul '20

09 Jul '20

FYI, on July 22, I might have to miss the meeting, but it should still go on; I will arrange with Dan or Puri to host if I have to miss. 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 ________________________________ From: Skjellum, Anthony Sent: Wednesday, October 11, 2017 7:04 AM To: mpiwg-persistence(a)lists.mpi-forum.org <mpiwg-persistence(a)lists.mpi-forum.org>; mpiwg-coll(a)lists.mpi-forum.org <mpiwg-coll(a)lists.mpi-forum.org>; Julien JAEGER <Julien.JAEGER(a)CEA.FR> Subject: MPI Persistent/Collective WGs Weekly Meeting When: Wednesday, July 22, 2020 10:00 AM-11:00 AM. Where: Now, we use only zoom meetings: Hi there, Anthony Skjellum is inviting you to a scheduled Zoom meeting. Topic: Anthony Skjellum's Personal Meeting Room Join from PC, Mac, Linux, iOS or Android: https://tennessee.zoom.us/j/9916910516 Or iPhone one-tap (US Toll): +16468769923,9916910516# or +16699006833,9916910516# Or Telephone: Dial: +1 646 876 9923 (US Toll) +1 669 900 6833 (US Toll) Meeting ID: 991 691 0516 International numbers available: https://zoom.us/u/acVk33oBeV Or an H.323/SIP room system: H.323: 162.255.37.11 (US West) or 162.255.36.11 (US East) Meeting ID: 991 691 0516 SIP: 9916910516(a)zoomcrc.com

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MPI Persistent/Collective WGs Weekly Meeting
by Skjellum, Anthony 08 Jul '20

08 Jul '20

[1.5 hours books, but starting @ 11am Eastern next week; have a 10am conflict sorry] Now, we use only zoom meetings: Hi there, Anthony Skjellum is inviting you to a scheduled Zoom meeting. Topic: Anthony Skjellum's Personal Meeting Room Join from PC, Mac, Linux, iOS or Android: https://tennessee.zoom.us/j/9916910516 Or iPhone one-tap (US Toll): +16468769923,9916910516# or +16699006833,9916910516# Or Telephone: Dial: +1 646 876 9923 (US Toll) +1 669 900 6833 (US Toll) Meeting ID: 991 691 0516 International numbers available: https://zoom.us/u/acVk33oBeV Or an H.323/SIP room system: H.323: 162.255.37.11 (US West) or 162.255.36.11 (US East) Meeting ID: 991 691 0516 SIP: 9916910516(a)zoomcrc.com

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