October 2018 - mpi-forum - mailman3.cels.anl.gov

Re: [Mpi-forum] Reminder: MPI Virtual Meeting Wednesday Oct. 31. (For most of us already TODAY)
by Martin Schulz 31 Oct '18

31 Oct '18

Hi all, Just as a quick reminder (since I just realized this myself): due to the fact that Europe has already changed off daylight savings, the meeting in Europe is an hour earlier today, i.e., in 10 minutes. For participants in the US, the time is as usual - 10am Central. I have to admit, I don’t know the situation in Asia, but I think also there the time should be as usual. Martin — Prof. Dr. Martin Schulz, Chair of Computer Architecture and Parallel Systems Department of Informatics, TU-Munich, Boltzmannstraße 3, D-85748 Garching Email: schulzm(a)in.tum.de > On 31. Oct 2018, at 10:41, Martin Schulz <schulzm(a)in.tum.de> wrote: > > Hi all, > > Just as a reminder, today (i.e., THIS Wednesday) we will have our next virtual meeting in this quarter. The webex information can be reached via > > https://www.mpi-forum.org/meetings/ <https://www.mpi-forum.org/meetings/> > > The topic will be "Failure Behavior for MPI_Init” and Aurelian will lead the discussion. > > Thanks, > Martin > > — > Prof. Dr. Martin Schulz, Chair of Computer Architecture and Parallel Systems > Department of Informatics, TU-Munich, Boltzmannstraße 3, D-85748 Garching > Email: schulzm(a)in.tum.de <mailto:[email protected]> > > > > > > >

1 0

Reminder: MPI Virtual Meeting Wednesday Oct. 31. (For most of us already TODAY)
by Martin Schulz 31 Oct '18

31 Oct '18

Hi all, Just as a reminder, today (i.e., THIS Wednesday) we will have our next virtual meeting in this quarter. The webex information can be reached via https://www.mpi-forum.org/meetings/ <https://www.mpi-forum.org/meetings/> The topic will be "Failure Behavior for MPI_Init” and Aurelian will lead the discussion. Thanks, Martin — Prof. Dr. Martin Schulz, Chair of Computer Architecture and Parallel Systems Department of Informatics, TU-Munich, Boltzmannstraße 3, D-85748 Garching Email: schulzm(a)in.tum.de <mailto:[email protected]>

1 0

Re: [Mpi-forum] Reminder: MPI Virtual Meeting THIS Wednesday Oct. 17.
by Mohror, Kathryn 29 Oct '18

29 Oct '18

Has the time and date for this meeting been decided? Kathryn -----Original Message----- From: mpi-forum <mpi-forum-bounces(a)lists.mpi-forum.org> On Behalf Of Rolf Rabenseifner via mpi-forum Sent: Thursday, October 25, 2018 12:51 AM To: Main MPI Forum mailing list <mpi-forum(a)lists.mpi-forum.org> Cc: Rolf Rabenseifner <rabenseifner(a)hlrs.de> Subject: Re: [Mpi-forum] Reminder: MPI Virtual Meeting THIS Wednesday Oct. 17. For me, all date+time are okay. Rolf ----- Original Message ----- > From: "Main MPI Forum mailing list" <mpi-forum(a)lists.mpi-forum.org> > To: "Main MPI Forum mailing list" <mpi-forum(a)lists.mpi-forum.org> > Cc: "Anthony Skjellum" <skjellum(a)gmail.com> > Sent: Wednesday, October 24, 2018 6:24:28 PM > Subject: Re: [Mpi-forum] Reminder: MPI Virtual Meeting THIS Wednesday Oct. 17. > Dear Forum Members: > > We would like to schedule a meeting about "new language bindings" as > an action item from our virtual last meeting (just ended). > > This covers this topic with sub-topics raised in the Virtual Meeting > (plus > more): > > "MPI object that contains an entire language binding" ... which is due > to Jeff Squyres :-) > > With these questions (among others to be answered) > --- How to descrtibe this, such as with a normative header, from C, > C++, Fortran > --- How to guarantee that a given library (e.g., MPI-4) can also allow > internal and layered components (e.g., MPI3) to work. > [Imagine an MPI-3 based library receiving a communicator from an MPI-4 > main program in this way] > --- How this approach can alleviate the need for the following > a) _X Big MPI APIs, because the MPI.fn() [maybe MPI->fn() in C] > provides the old and new APIs either through multiplicity of APIs, or > through compile-time polymorphism > b) Explanation of how this is strongly typed at compile time > c) Explanation of how this works with PMPI and tools (or what changes > it may > imply) > d) DIscussion of how this could interact with > --- eliminating MPI_COMM_WORLD and new MPI_Init() variants > --- Sessions and Topological groups > --- Subset APIs > --- Fault Tolerance > [others?] > e) Timing of such a proposal once we agree to formalize it. Probably December. > TBD. > > > Right now, I am proposing 9am US Eastern on October 31, 2018 > (Halloween in the US and elsewhere), since some of you may find this to be a scary conversation. > This is 2 hours before our next virtual meeting (11am Eastern on > 10/31). Alt > time: 10am Same day. Third alternative, November 2 @ 8am eastern. > > AGAIN: > 9am Eastern, 10/31 > 10am Eastern, 10/31 (right before Virtual Meeting) 8am Eastern, 11/1 , > > Of those of you who would actually attend, do these possible times work :-) . > [Let me know -- if you can make and can't make, and I'll try to > intersect the data.] > > If all time fails, I will do a formal doodle poll. > > Thanks, > Tony > > > > > On Wed, Oct 17, 2018 at 5:10 AM Martin Schulz via mpi-forum < [ > mailto:[email protected] | mpi-forum(a)lists.mpi-forum.org ] > wrote: > > > > Hi all, > > Just as a reminder, today (i.e., THIS Wednesday) we will have our next > virtual meeting in this quarter. The webex information can be reached > via > > [ https://www.mpi-forum.org/meetings/ | > https://www.mpi-forum.org/meetings/ ] > > The topic will be “MPI_T Events” and Marc-Andre will lead the discussion. > > Thanks, > Martin > > — > Prof. Dr. Martin Schulz, Chair of Computer Architecture and Parallel > Systems Department of Informatics, TU-Munich, Boltzmannstraße 3, > D-85748 Garching [ mailto:[email protected] | Email: schulzm(a)in.tum.de > ] > > > > > > _______________________________________________ > mpi-forum mailing list > [ mailto:[email protected] | mpi-forum(a)lists.mpi-forum.org > ] [ https://lists.mpi-forum.org/mailman/listinfo/mpi-forum | > https://lists.mpi-forum.org/mailman/listinfo/mpi-forum ] > > > -- > Anthony Skjellum, PhD > [ mailto:[email protected] | skjellum(a)gmail.com ] > Cell: +1-205-807-4968 > > > > _______________________________________________ > mpi-forum mailing list > mpi-forum(a)lists.mpi-forum.org > https://lists.mpi-forum.org/mailman/listinfo/mpi-forum -- 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) . _______________________________________________ mpi-forum mailing list mpi-forum(a)lists.mpi-forum.org https://lists.mpi-forum.org/mailman/listinfo/mpi-forum

1 0

Re: [Mpi-forum] Reminder: MPI Virtual Meeting THIS Wednesday Oct. 17.
by Rolf Rabenseifner 25 Oct '18

25 Oct '18

For me, all date+time are okay. Rolf ----- Original Message ----- > From: "Main MPI Forum mailing list" <mpi-forum(a)lists.mpi-forum.org> > To: "Main MPI Forum mailing list" <mpi-forum(a)lists.mpi-forum.org> > Cc: "Anthony Skjellum" <skjellum(a)gmail.com> > Sent: Wednesday, October 24, 2018 6:24:28 PM > Subject: Re: [Mpi-forum] Reminder: MPI Virtual Meeting THIS Wednesday Oct. 17. > Dear Forum Members: > > We would like to schedule a meeting about "new language bindings" as an action > item from our virtual last meeting (just ended). > > This covers this topic with sub-topics raised in the Virtual Meeting (plus > more): > > "MPI object that contains an entire language binding" ... which is due to Jeff > Squyres :-) > > With these questions (among others to be answered) > --- How to descrtibe this, such as with a normative header, from C, C++, Fortran > --- How to guarantee that a given library (e.g., MPI-4) can also allow internal > and layered components (e.g., MPI3) to work. > [Imagine an MPI-3 based library receiving a communicator from an MPI-4 main > program in this way] > --- How this approach can alleviate the need for the following > a) _X Big MPI APIs, because the MPI.fn() [maybe MPI->fn() in C] provides the old > and new APIs either through multiplicity > of APIs, or through compile-time polymorphism > b) Explanation of how this is strongly typed at compile time > c) Explanation of how this works with PMPI and tools (or what changes it may > imply) > d) DIscussion of how this could interact with > --- eliminating MPI_COMM_WORLD and new MPI_Init() variants > --- Sessions and Topological groups > --- Subset APIs > --- Fault Tolerance > [others?] > e) Timing of such a proposal once we agree to formalize it. Probably December. > TBD. > > > Right now, I am proposing 9am US Eastern on October 31, 2018 (Halloween in the > US and elsewhere), since some of you may find this to be a scary conversation. > This is 2 hours before our next virtual meeting (11am Eastern on 10/31). Alt > time: 10am Same day. Third alternative, November 2 @ 8am eastern. > > AGAIN: > 9am Eastern, 10/31 > 10am Eastern, 10/31 (right before Virtual Meeting) > 8am Eastern, 11/1 , > > Of those of you who would actually attend, do these possible times work :-) . > [Let me know -- if you can make and can't make, and I'll try to intersect the > data.] > > If all time fails, I will do a formal doodle poll. > > Thanks, > Tony > > > > > On Wed, Oct 17, 2018 at 5:10 AM Martin Schulz via mpi-forum < [ > mailto:[email protected] | mpi-forum(a)lists.mpi-forum.org ] > wrote: > > > > Hi all, > > Just as a reminder, today (i.e., THIS Wednesday) we will have our next virtual > meeting in this quarter. The webex information can be reached via > > [ https://www.mpi-forum.org/meetings/ | https://www.mpi-forum.org/meetings/ ] > > The topic will be “MPI_T Events” and Marc-Andre will lead the discussion. > > Thanks, > Martin > > — > Prof. Dr. Martin Schulz, Chair of Computer Architecture and Parallel Systems > Department of Informatics, TU-Munich, Boltzmannstraße 3, D-85748 Garching > [ mailto:[email protected] | Email: schulzm(a)in.tum.de ] > > > > > > _______________________________________________ > mpi-forum mailing list > [ mailto:[email protected] | mpi-forum(a)lists.mpi-forum.org ] > [ https://lists.mpi-forum.org/mailman/listinfo/mpi-forum | > https://lists.mpi-forum.org/mailman/listinfo/mpi-forum ] > > > -- > Anthony Skjellum, PhD > [ mailto:[email protected] | skjellum(a)gmail.com ] > Cell: +1-205-807-4968 > > > > _______________________________________________ > mpi-forum mailing list > mpi-forum(a)lists.mpi-forum.org > https://lists.mpi-forum.org/mailman/listinfo/mpi-forum -- 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) .

1 0

Re: [Mpi-forum] Reminder: MPI Virtual Meeting THIS Wednesday Oct. 17.
by HOLMES Daniel 24 Oct '18

24 Oct '18

I can do 10am Eastern on 31st Oct or any time on 2nd Nov but not 9am Eastern on 31st Oct. Cheers, Dan. — Dr Daniel Holmes PhD Applications Consultant in 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 24 Oct 2018, at 19:07, Wesley Bland via mpi-forum <mpi-forum(a)lists.mpi-forum.org<mailto:[email protected]>> wrote: I prefer the Halloween horror. :) On Oct 24, 2018, at 11:24 AM, Anthony Skjellum via mpi-forum <mpi-forum(a)lists.mpi-forum.org<mailto:[email protected]>> wrote: Dear Forum Members: We would like to schedule a meeting about "new language bindings" as an action item from our virtual last meeting (just ended). This covers this topic with sub-topics raised in the Virtual Meeting (plus more): "MPI object that contains an entire language binding" ... which is due to Jeff Squyres :-) With these questions (among others to be answered) --- How to descrtibe this, such as with a normative header, from C, C++, Fortran --- How to guarantee that a given library (e.g., MPI-4) can also allow internal and layered components (e.g., MPI3) to work. [Imagine an MPI-3 based library receiving a communicator from an MPI-4 main program in this way] --- How this approach can alleviate the need for the following a) _X Big MPI APIs, because the MPI.fn() [maybe MPI->fn() in C] provides the old and new APIs either through multiplicity of APIs, or through compile-time polymorphism b) Explanation of how this is strongly typed at compile time c) Explanation of how this works with PMPI and tools (or what changes it may imply) d) DIscussion of how this could interact with --- eliminating MPI_COMM_WORLD and new MPI_Init() variants --- Sessions and Topological groups --- Subset APIs --- Fault Tolerance [others?] e) Timing of such a proposal once we agree to formalize it. Probably December. TBD. Right now, I am proposing 9am US Eastern on October 31, 2018 (Halloween in the US and elsewhere), since some of you may find this to be a scary conversation. This is 2 hours before our next virtual meeting (11am Eastern on 10/31). Alt time: 10am Same day. Third alternative, November 2 @ 8am eastern. AGAIN: 9am Eastern, 10/31 10am Eastern, 10/31 (right before Virtual Meeting) 8am Eastern, 11/1 , Of those of you who would actually attend, do these possible times work :-) . [Let me know -- if you can make and can't make, and I'll try to intersect the data.] If all time fails, I will do a formal doodle poll. Thanks, Tony On Wed, Oct 17, 2018 at 5:10 AM Martin Schulz via mpi-forum <mpi-forum(a)lists.mpi-forum.org<mailto:[email protected]>> wrote: Hi all, Just as a reminder, today (i.e., THIS Wednesday) we will have our next virtual meeting in this quarter. The webex information can be reached via https://www.mpi-forum.org/meetings/ The topic will be “MPI_T Events” and Marc-Andre will lead the discussion. Thanks, Martin — Prof. Dr. Martin Schulz, Chair of Computer Architecture and Parallel Systems Department of Informatics, TU-Munich, Boltzmannstraße 3, D-85748 Garching Email: schulzm(a)in.tum.de<mailto:[email protected]> _______________________________________________ mpi-forum mailing list mpi-forum(a)lists.mpi-forum.org<mailto:[email protected]> https://lists.mpi-forum.org/mailman/listinfo/mpi-forum -- Anthony Skjellum, PhD skjellum(a)gmail.com<mailto:[email protected]> Cell: +1-205-807-4968 _______________________________________________ mpi-forum mailing list mpi-forum(a)lists.mpi-forum.org<mailto:[email protected]> https://lists.mpi-forum.org/mailman/listinfo/mpi-forum _______________________________________________ mpi-forum mailing list mpi-forum(a)lists.mpi-forum.org<mailto:[email protected]> https://lists.mpi-forum.org/mailman/listinfo/mpi-forum The University of Edinburgh is a charitable body, registered in Scotland, with registration number SC005336.

1 0

Re: [Mpi-forum] Reminder: MPI Virtual Meeting THIS Wednesday Oct. 17.
by Wesley Bland 24 Oct '18

24 Oct '18

I prefer the Halloween horror. :) > On Oct 24, 2018, at 11:24 AM, Anthony Skjellum via mpi-forum <mpi-forum(a)lists.mpi-forum.org> wrote: > > Dear Forum Members: > > We would like to schedule a meeting about "new language bindings" as an action item from our virtual last meeting (just ended). > > This covers this topic with sub-topics raised in the Virtual Meeting (plus more): > > "MPI object that contains an entire language binding" ... which is due to Jeff Squyres :-) > > With these questions (among others to be answered) > --- How to descrtibe this, such as with a normative header, from C, C++, Fortran > --- How to guarantee that a given library (e.g., MPI-4) can also allow internal and layered components (e.g., MPI3) to work. > [Imagine an MPI-3 based library receiving a communicator from an MPI-4 main program in this way] > --- How this approach can alleviate the need for the following > a) _X Big MPI APIs, because the MPI.fn() [maybe MPI->fn() in C] provides the old and new APIs either through multiplicity > of APIs, or through compile-time polymorphism > b) Explanation of how this is strongly typed at compile time > c) Explanation of how this works with PMPI and tools (or what changes it may imply) > d) DIscussion of how this could interact with > --- eliminating MPI_COMM_WORLD and new MPI_Init() variants > --- Sessions and Topological groups > --- Subset APIs > --- Fault Tolerance > [others?] > e) Timing of such a proposal once we agree to formalize it. Probably December. TBD. > > > Right now, I am proposing 9am US Eastern on October 31, 2018 (Halloween in the US and elsewhere), since some of you may find this to be a scary conversation. This is 2 hours before our next virtual meeting (11am Eastern on 10/31). Alt time: 10am Same day. Third alternative, November 2 @ 8am eastern. > > AGAIN: > 9am Eastern, 10/31 > 10am Eastern, 10/31 (right before Virtual Meeting) > 8am Eastern, 11/1 , > > Of those of you who would actually attend, do these possible times work :-) . [Let me know -- if you can make and can't make, and I'll try to intersect the data.] > > If all time fails, I will do a formal doodle poll. > > Thanks, > Tony > > > > > On Wed, Oct 17, 2018 at 5:10 AM Martin Schulz via mpi-forum <mpi-forum(a)lists.mpi-forum.org <mailto:[email protected]>> wrote: > Hi all, > > Just as a reminder, today (i.e., THIS Wednesday) we will have our next virtual meeting in this quarter. The webex information can be reached via > > https://www.mpi-forum.org/meetings/ <https://www.mpi-forum.org/meetings/> > > The topic will be “MPI_T Events” and Marc-Andre will lead the discussion. > > Thanks, > Martin > > — > Prof. Dr. Martin Schulz, Chair of Computer Architecture and Parallel Systems > Department of Informatics, TU-Munich, Boltzmannstraße 3, D-85748 Garching > Email: schulzm(a)in.tum.de <mailto:[email protected]> > > > > > > _______________________________________________ > mpi-forum mailing list > mpi-forum(a)lists.mpi-forum.org <mailto:[email protected]> > https://lists.mpi-forum.org/mailman/listinfo/mpi-forum <https://lists.mpi-forum.org/mailman/listinfo/mpi-forum> > > > -- > Anthony Skjellum, PhD > skjellum(a)gmail.com <mailto:[email protected]> > Cell: +1-205-807-4968 > > > _______________________________________________ > mpi-forum mailing list > mpi-forum(a)lists.mpi-forum.org > https://lists.mpi-forum.org/mailman/listinfo/mpi-forum

1 0

Re: [Mpi-forum] Reminder: MPI Virtual Meeting THIS Wednesday Oct. 17.
by Nathan Hjelm 24 Oct '18

24 Oct '18

All but 11/2 works for me. I am really interested in participating in this call. -Nathan On Wed, Oct 24, 2018 at 12:24:28PM -0400, Anthony Skjellum via mpi-forum wrote: > Dear Forum Members: > We would like to schedule a meeting about "new language bindings" as an > action item from our virtual last meeting (just ended). > This covers this topic with sub-topics raised in the Virtual Meeting (plus > more): > "MPI object that contains an entire language binding" ... which is due to > Jeff Squyres :-) > With these questions (among others to be answered) > --- How to descrtibe this, such as with a normative header, from C, C++, > Fortran > --- How to guarantee that a given library (e.g., MPI-4) can also allow > internal and layered components (e.g., MPI3) to work. > [Imagine an MPI-3 based library receiving a communicator from an MPI-4 > main program in this way] > --- How this approach can alleviate the need for the following > a) _X Big MPI APIs, because the MPI.fn() [maybe MPI->fn() in C] provides > the old and new APIs either through multiplicity > of APIs, or through compile-time polymorphism > b) Explanation of how this is strongly typed at compile time > c) Explanation of how this works with PMPI and tools (or what changes it > may imply) > d) DIscussion of how this could interact with > --- eliminating MPI_COMM_WORLD and new MPI_Init() variants > --- Sessions and Topological groups > --- Subset APIs > --- Fault Tolerance > [others?] > e) Timing of such a proposal once we agree to formalize it. Probably > December. TBD. > Right now, I am proposing 9am US Eastern on October 31, 2018 (Halloween in > the US and elsewhere), since some of you may find this to be a scary > conversation. This is 2 hours before our next virtual meeting (11am > Eastern on 10/31). Alt time: 10am Same day. Third alternative, > November 2 @ 8am eastern. > AGAIN: > 9am Eastern, 10/31 > 10am Eastern, 10/31 (right before Virtual Meeting) > 8am Eastern, 11/1 , > Of those of you who would actually attend, do these possible times work > :-) . [Let me know -- if you can make and can't make, and I'll try to > intersect the data.] > If all time fails, I will do a formal doodle poll. > Thanks, > Tony > On Wed, Oct 17, 2018 at 5:10 AM Martin Schulz via mpi-forum > <mpi-forum(a)lists.mpi-forum.org> wrote: > > Hi all, > Just as a reminder, today (i.e., THIS Wednesday) we will have our next > virtual meeting in this quarter. The webex information can be reached > via > https://www.mpi-forum.org/meetings/ > The topic will be “MPI_T Events” and Marc-Andre will lead the > discussion. > > Thanks, > Martin > > — > Prof. Dr. Martin Schulz, Chair of Computer Architecture and Parallel > Systems > Department of Informatics, TU-Munich, Boltzmannstraße 3, D-85748 > Garching > Email: schulzm(a)in.tum.de > > _______________________________________________ > mpi-forum mailing list > mpi-forum(a)lists.mpi-forum.org > https://lists.mpi-forum.org/mailman/listinfo/mpi-forum > > -- > Anthony Skjellum, PhD > skjellum(a)gmail.com > Cell: +1-205-807-4968 > _______________________________________________ > mpi-forum mailing list > mpi-forum(a)lists.mpi-forum.org > https://lists.mpi-forum.org/mailman/listinfo/mpi-forum

1 0

Re: [Mpi-forum] Reminder: MPI Virtual Meeting THIS Wednesday Oct. 17.
by Jeff Squyres (jsquyres) 24 Oct '18

24 Oct '18

9am or 10am US Eastern on 10/31 works for me. > On Oct 24, 2018, at 12:24 PM, Anthony Skjellum via mpi-forum <mpi-forum(a)lists.mpi-forum.org> wrote: > > Dear Forum Members: > > We would like to schedule a meeting about "new language bindings" as an action item from our virtual last meeting (just ended). > > This covers this topic with sub-topics raised in the Virtual Meeting (plus more): > > "MPI object that contains an entire language binding" ... which is due to Jeff Squyres :-) > > With these questions (among others to be answered) > --- How to descrtibe this, such as with a normative header, from C, C++, Fortran > --- How to guarantee that a given library (e.g., MPI-4) can also allow internal and layered components (e.g., MPI3) to work. > [Imagine an MPI-3 based library receiving a communicator from an MPI-4 main program in this way] > --- How this approach can alleviate the need for the following > a) _X Big MPI APIs, because the MPI.fn() [maybe MPI->fn() in C] provides the old and new APIs either through multiplicity > of APIs, or through compile-time polymorphism > b) Explanation of how this is strongly typed at compile time > c) Explanation of how this works with PMPI and tools (or what changes it may imply) > d) DIscussion of how this could interact with > --- eliminating MPI_COMM_WORLD and new MPI_Init() variants > --- Sessions and Topological groups > --- Subset APIs > --- Fault Tolerance > [others?] > e) Timing of such a proposal once we agree to formalize it. Probably December. TBD. > > > Right now, I am proposing 9am US Eastern on October 31, 2018 (Halloween in the US and elsewhere), since some of you may find this to be a scary conversation. This is 2 hours before our next virtual meeting (11am Eastern on 10/31). Alt time: 10am Same day. Third alternative, November 2 @ 8am eastern. > > AGAIN: > 9am Eastern, 10/31 > 10am Eastern, 10/31 (right before Virtual Meeting) > 8am Eastern, 11/1 , > > Of those of you who would actually attend, do these possible times work :-) . [Let me know -- if you can make and can't make, and I'll try to intersect the data.] > > If all time fails, I will do a formal doodle poll. > > Thanks, > Tony > > > > > On Wed, Oct 17, 2018 at 5:10 AM Martin Schulz via mpi-forum <mpi-forum(a)lists.mpi-forum.org> wrote: > Hi all, > > Just as a reminder, today (i.e., THIS Wednesday) we will have our next virtual meeting in this quarter. The webex information can be reached via > > https://www.mpi-forum.org/meetings/ > > The topic will be “MPI_T Events” and Marc-Andre will lead the discussion. > > Thanks, > Martin > > — > Prof. Dr. Martin Schulz, Chair of Computer Architecture and Parallel Systems > Department of Informatics, TU-Munich, Boltzmannstraße 3, D-85748 Garching > Email: schulzm(a)in.tum.de > > > > > > _______________________________________________ > mpi-forum mailing list > mpi-forum(a)lists.mpi-forum.org > https://lists.mpi-forum.org/mailman/listinfo/mpi-forum > > > -- > Anthony Skjellum, PhD > skjellum(a)gmail.com > Cell: +1-205-807-4968 > > > _______________________________________________ > 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

1 0

Re: [Mpi-forum] Reminder: MPI Virtual Meeting THIS Wednesday Oct. 17.
by Anthony Skjellum 24 Oct '18

24 Oct '18

Dear Forum Members: We would like to schedule a meeting about "new language bindings" as an action item from our virtual last meeting (just ended). This covers this topic with sub-topics raised in the Virtual Meeting (plus more): "MPI object that contains an entire language binding" ... which is due to Jeff Squyres :-) With these questions (among others to be answered) --- How to descrtibe this, such as with a normative header, from C, C++, Fortran --- How to guarantee that a given library (e.g., MPI-4) can also allow internal and layered components (e.g., MPI3) to work. [Imagine an MPI-3 based library receiving a communicator from an MPI-4 main program in this way] --- How this approach can alleviate the need for the following a) _X Big MPI APIs, because the MPI.fn() [maybe MPI->fn() in C] provides the old and new APIs either through multiplicity of APIs, or through compile-time polymorphism b) Explanation of how this is strongly typed at compile time c) Explanation of how this works with PMPI and tools (or what changes it may imply) d) DIscussion of how this could interact with --- eliminating MPI_COMM_WORLD and new MPI_Init() variants --- Sessions and Topological groups --- Subset APIs --- Fault Tolerance [others?] e) Timing of such a proposal once we agree to formalize it. Probably December. TBD. Right now, I am proposing 9am US Eastern on October 31, 2018 (Halloween in the US and elsewhere), since some of you may find this to be a scary conversation. This is 2 hours before our next virtual meeting (11am Eastern on 10/31). Alt time: 10am Same day. Third alternative, November 2 @ 8am eastern. AGAIN: 9am Eastern, 10/31 10am Eastern, 10/31 (right before Virtual Meeting) 8am Eastern, 11/1 , Of those of you who would actually attend, do these possible times work :-) . [Let me know -- if you can make and can't make, and I'll try to intersect the data.] If all time fails, I will do a formal doodle poll. Thanks, Tony On Wed, Oct 17, 2018 at 5:10 AM Martin Schulz via mpi-forum < mpi-forum(a)lists.mpi-forum.org> wrote: > Hi all, > > Just as a reminder, today (i.e., THIS Wednesday) we will have our next > virtual meeting in this quarter. The webex information can be reached via > > https://www.mpi-forum.org/meetings/ > > The topic will be “MPI_T Events” and Marc-Andre will lead the discussion. > > Thanks, > Martin > > — > Prof. Dr. Martin Schulz, Chair of Computer Architecture and Parallel > Systems > Department of Informatics, TU-Munich, Boltzmannstraße 3, D-85748 Garching > Email: schulzm(a)in.tum.de <schulzm(a)in.tum.de> > > > > > > _______________________________________________ > mpi-forum mailing list > mpi-forum(a)lists.mpi-forum.org > https://lists.mpi-forum.org/mailman/listinfo/mpi-forum > -- Anthony Skjellum, PhD skjellum(a)gmail.com Cell: +1-205-807-4968

1 0

Reminder: MPI Virtual Meeting THIS Wednesday Oct. 24.
by Martin Schulz 24 Oct '18

24 Oct '18

Hi all, Just as a reminder, today (i.e., THIS Wednesday) we will have our next virtual meeting in this quarter. The webex information can be reached via https://www.mpi-forum.org/meetings/ <https://www.mpi-forum.org/meetings/> The topic will be a discussion on how we want to proceed with the MPI standard in general, what our roadmap is and how much we want to stick to backwards compatibility. This topic come out of a discussion towards the end of the MPI Forum in Barcelona and was triggered on how to handle “BigCount”, but then quickly went much wider. We ended up with a large majority (of those present only, of course) wanting to investigate this further and possible opting for something we called a “fork” of the standard, i.e., having an MPI 3.x line and an MPI 4.x line, which would no longer be backwards compatible, but still composable. The meeting today is intended to be an open discussion to a) continue the discussion from Barcelona and to b) get the pulse from people who were not at the meeting. Thanks, Martin — Prof. Dr. Martin Schulz, Chair of Computer Architecture and Parallel Systems Department of Informatics, TU-Munich, Boltzmannstraße 3, D-85748 Garching Email: schulzm(a)in.tum.de <mailto:[email protected]>

1 0