December 2008 - mpiwg-rma - mailman3.cels.anl.gov

Re: [Mpi3-rma] FW: draft of a proposal for RMA interfaces
by Vinod tipparaju 08 Dec '08

08 Dec '08

As I am preparing the faq Rajeev suggested, please send me any more questions you want included.Thanks,Vinod.From: thakur(a)mcs.anl.govTo: mpi3-rma(a)lists.mpi-forum.orgDate: Mon, 8 Dec 2008 12:04:14 -0600Subject: [Mpi3-rma] FW: draft of a proposal for RMA interfaces RE: [Mpi3-rma] draft of a proposal for RMA interfaces Just resending this as a reminder. It would be good to have an FAQ that answers commonly asked questions. Rajeev From: Rajeev Thakur [mailto:[email protected]] Sent: Sunday, October 19, 2008 6:43 PMTo: 'MPI 3.0 Remote Memory Access working group'Subject: RE: [Mpi3-rma] draft of a proposal for RMA interfaces I think it would be good to add an FAQ section at the end, containing answers to questions that will be asked of any RMA proposal, such as non-cache-coherent, does it meet the needs of PGAS/Global Arrays, support for heterogeneous, how does the target know of completion, how does it interplay with existing RMA spec, etc. It will make sure that the proposal addresses those issues, that we ourselves are clear of the answers, and that they are not repeatedly raised at each meeting. Rajeev > Richard Graham wrote: > >> Just to get discussion going again. Talking with several folks I have >> heard several concerns expressed about the proposal. I think it would >> be good if these (and others) could be raised on the list, so we can >> start discussion. We can continue this next week in Chicago, but >> Vinod will not be able to make this meeting, so an e-mail discussion >> will help. >> >> Here are the issues I have hear of so far: >> - May not work well on current h/w that is not cache coherent, as it >> requires a remote thread in this case. I believe this is for the SX >> series of machines, but Jesper please correct me if I am wrong here. >> What would be an alternative approach that could provide expected >> performance on platforms that may require work on the remote end for >> RMA for correctness, and work well on platforms that do require very >> specific remote cache management (or other actions) for correctness ? >> - Concern about future high-end platforms, under that assumption that >> these will not be cache coherent (and will actually have caches – if >> they don’t this is not a concern), and therefore this proposal is >> aimed at a short-lived technical capability. >> - What is missing ?

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[Mpi3-rma] FW: draft of a proposal for RMA interfaces
by Rajeev Thakur 08 Dec '08

08 Dec '08

Just resending this as a reminder. It would be good to have an FAQ that answers commonly asked questions. Rajeev _____ From: Rajeev Thakur [mailto:[email protected]] Sent: Sunday, October 19, 2008 6:43 PM To: 'MPI 3.0 Remote Memory Access working group' Subject: RE: [Mpi3-rma] draft of a proposal for RMA interfaces I think it would be good to add an FAQ section at the end, containing answers to questions that will be asked of any RMA proposal, such as non-cache-coherent, does it meet the needs of PGAS/Global Arrays, support for heterogeneous, how does the target know of completion, how does it interplay with existing RMA spec, etc. It will make sure that the proposal addresses those issues, that we ourselves are clear of the answers, and that they are not repeatedly raised at each meeting. Rajeev > Richard Graham wrote: > >> Just to get discussion going again. Talking with several folks I have >> heard several concerns expressed about the proposal. I think it would >> be good if these (and others) could be raised on the list, so we can >> start discussion. We can continue this next week in Chicago, but >> Vinod will not be able to make this meeting, so an e-mail discussion >> will help. >> >> Here are the issues I have hear of so far: >> - May not work well on current h/w that is not cache coherent, as it >> requires a remote thread in this case. I believe this is for the SX >> series of machines, but Jesper please correct me if I am wrong here. >> What would be an alternative approach that could provide expected >> performance on platforms that may require work on the remote end for >> RMA for correctness, and work well on platforms that do require very >> specific remote cache management (or other actions) for correctness ? >> - Concern about future high-end platforms, under that assumption that >> these will not be cache coherent (and will actually have caches - if >> they don't this is not a concern), and therefore this proposal is >> aimed at a short-lived technical capability. >> - What is missing ?

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[Mpi3-rma] RMA concall dialing instructions and agenda
by Rajeev Thakur 05 Dec '08

05 Dec '08

The phone call is set up for Tue, Dec 9, 9.00am Central (GMT-6) = 10.00am Eastern, 4.00pm Germany. Dial-in Number: 1-218-486-8700 Participant Access Code: 35704 Agenda: * Next steps for RMA proposal from Vinod Tipparaju et al (original version from Dublin meeting attached) * coherency issues in specific architectures (need input from participants representing those architectures) If time permits: * Ticket #37 for MPI 2.2 (examples for the one-sided synchronization semantics https://svn.mpi-forum.org/trac/mpi-forum-web/ticket/37 ) * Ticket #35 for MPI 2.2 (registration of datatypes on MPI_Ops for RMA https://svn.mpi-forum.org/trac/mpi-forum-web/ticket/35 ) If you have other agenda items, let me know. Rajeev

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Re: [Mpi3-rma] RMA phone call next Tuesday, Dec 9
by Jesper Larsson Traeff 04 Dec '08

04 Dec '08

same here Jesper On Thu, Dec 04, 2008 at 05:14:29PM +0100, Hubert Ritzdorf wrote: > An hour earlier is also fine for me. > > Hubert > > Richard Graham wrote: > >Can we do this an hour earlier ? > > > >Rich > > > > > >On 12/3/08 12:28 PM, "Hubert Ritzdorf" <ritzdorf(a)it.neclab.eu> wrote: > > > > It works also for me. > > > > Hubert > > > > Rajeev Thakur wrote: > > > We are planning to have a conference call next Tuesday (Dec 9) > > for the RMA > > > working group. Since there are many time zones, would 10.00am > > Central Time > > > (GMT-6) work for everyone who would like to participate? I will > > send the > > > calling details later. > > > > > > Rajeev > > > > > > _______________________________________________ > > > mpi3-rma mailing list > > > mpi3-rma(a)lists.mpi-forum.org > > > http://lists.mpi-forum.org/mailman/listinfo.cgi/mpi3-rma > > > > > > > > > > ------------------------------------------------------------------------ > > _______________________________________________ > > mpi3-rma mailing list > > mpi3-rma(a)lists.mpi-forum.org > > http://lists.mpi-forum.org/mailman/listinfo.cgi/mpi3-rma > > > >------------------------------------------------------------------------ > > > >_______________________________________________ > >mpi3-rma mailing list > >mpi3-rma(a)lists.mpi-forum.org > >http://lists.mpi-forum.org/mailman/listinfo.cgi/mpi3-rma > > > _______________________________________________ > mpi3-rma mailing list > mpi3-rma(a)lists.mpi-forum.org > http://lists.mpi-forum.org/mailman/listinfo.cgi/mpi3-rma

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Re: [Mpi3-rma] RMA phone call next Tuesday, Dec 9
by Hubert Ritzdorf 04 Dec '08

04 Dec '08

An hour earlier is also fine for me. Hubert Richard Graham wrote: > Can we do this an hour earlier ? > > Rich > > > On 12/3/08 12:28 PM, "Hubert Ritzdorf" <ritzdorf(a)it.neclab.eu> wrote: > > It works also for me. > > Hubert > > Rajeev Thakur wrote: > > We are planning to have a conference call next Tuesday (Dec 9) > for the RMA > > working group. Since there are many time zones, would 10.00am > Central Time > > (GMT-6) work for everyone who would like to participate? I will > send the > > calling details later. > > > > Rajeev > > > > _______________________________________________ > > mpi3-rma mailing list > > mpi3-rma(a)lists.mpi-forum.org > > http://lists.mpi-forum.org/mailman/listinfo.cgi/mpi3-rma > > > > > > ------------------------------------------------------------------------ > _______________________________________________ > mpi3-rma mailing list > mpi3-rma(a)lists.mpi-forum.org > http://lists.mpi-forum.org/mailman/listinfo.cgi/mpi3-rma > > ------------------------------------------------------------------------ > > _______________________________________________ > mpi3-rma mailing list > mpi3-rma(a)lists.mpi-forum.org > http://lists.mpi-forum.org/mailman/listinfo.cgi/mpi3-rma >

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Re: [Mpi3-rma] RMA phone call next Tuesday, Dec 9
by Rajeev Thakur 03 Dec '08

03 Dec '08

That might make it difficult for folks in Europe to join in. Rajeev _____ From: mpi3-rma-bounces(a)lists.mpi-forum.org [mailto:[email protected]] On Behalf Of Su Huang Sent: Wednesday, December 03, 2008 1:55 PM To: MPI 3.0 Remote Memory Access working group Subject: Re: [Mpi3-rma] RMA phone call next Tuesday, Dec 9 Rajeev, I work with Dick and Robert at IBM and would like to participate the conference call. Can we schedule the call in the afternoon? Thanks, Su Communication Protocols, Advance Clustering Technology Team (ACTT) IBM System and Technology Group Poughkeepsie, NY 12601 Phone : (845)-433-7927 (T/L: 293) Inactive hide details for Darius Buntinas ---12/03/2008 02:23:46 PM---That's fine with me. I'm available all day (at least forDarius Buntinas ---12/03/2008 02:23:46 PM---That's fine with me. I'm available all day (at least for now :-) ). -d From: Darius Buntinas <buntinas(a)mcs.anl.gov> To: "MPI 3.0 Remote Memory Access working group" <mpi3-rma(a)lists.mpi-forum.org> Date: 12/03/2008 02:23 PM Subject: Re: [Mpi3-rma] RMA phone call next Tuesday, Dec 9 _____ That's fine with me. I'm available all day (at least for now :-) ). -d On 12/03/2008 11:37 AM, Richard Graham wrote: > Can we do this an hour earlier ? > > Rich > > > On 12/3/08 12:28 PM, "Hubert Ritzdorf" <ritzdorf(a)it.neclab.eu> wrote: > > It works also for me. > > Hubert > > Rajeev Thakur wrote: > > We are planning to have a conference call next Tuesday (Dec 9) for > the RMA > > working group. Since there are many time zones, would 10.00am > Central Time > > (GMT-6) work for everyone who would like to participate? I will > send the > > calling details later. > > > > Rajeev > > > > _______________________________________________ > > mpi3-rma mailing list > > mpi3-rma(a)lists.mpi-forum.org > > http://lists.mpi-forum.org/mailman/listinfo.cgi/mpi3-rma > > > > > > ------------------------------------------------------------------------ > _______________________________________________ > mpi3-rma mailing list > mpi3-rma(a)lists.mpi-forum.org > http://lists.mpi-forum.org/mailman/listinfo.cgi/mpi3-rma > > > ------------------------------------------------------------------------ > > _______________________________________________ > mpi3-rma mailing list > mpi3-rma(a)lists.mpi-forum.org > http://lists.mpi-forum.org/mailman/listinfo.cgi/mpi3-rma _______________________________________________ mpi3-rma mailing list mpi3-rma(a)lists.mpi-forum.org http://lists.mpi-forum.org/mailman/listinfo.cgi/mpi3-rma

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Re: [Mpi3-rma] RMA phone call next Tuesday, Dec 9
by Su Huang 03 Dec '08

03 Dec '08

Rajeev, I work with Dick and Robert at IBM and would like to participate the conference call. Can we schedule the call in the afternoon? Thanks, Su Communication Protocols, Advance Clustering Technology Team (ACTT) IBM System and Technology Group Poughkeepsie, NY 12601 Phone : (845)-433-7927 (T/L: 293) From: Darius Buntinas <buntinas(a)mcs.anl.gov> To: "MPI 3.0 Remote Memory Access working group" <mpi3-rma(a)lists.mpi-forum.org> Date: 12/03/2008 02:23 PM Subject: Re: [Mpi3-rma] RMA phone call next Tuesday, Dec 9 That's fine with me. I'm available all day (at least for now :-) ). -d On 12/03/2008 11:37 AM, Richard Graham wrote: > Can we do this an hour earlier ? > > Rich > > > On 12/3/08 12:28 PM, "Hubert Ritzdorf" <ritzdorf(a)it.neclab.eu> wrote: > > It works also for me. > > Hubert > > Rajeev Thakur wrote: > > We are planning to have a conference call next Tuesday (Dec 9) for > the RMA > > working group. Since there are many time zones, would 10.00am > Central Time > > (GMT-6) work for everyone who would like to participate? I will > send the > > calling details later. > > > > Rajeev > > > > _______________________________________________ > > mpi3-rma mailing list > > mpi3-rma(a)lists.mpi-forum.org > > http://lists.mpi-forum.org/mailman/listinfo.cgi/mpi3-rma > > > > > > ------------------------------------------------------------------------ > _______________________________________________ > mpi3-rma mailing list > mpi3-rma(a)lists.mpi-forum.org > http://lists.mpi-forum.org/mailman/listinfo.cgi/mpi3-rma > > > ------------------------------------------------------------------------ > > _______________________________________________ > mpi3-rma mailing list > mpi3-rma(a)lists.mpi-forum.org > http://lists.mpi-forum.org/mailman/listinfo.cgi/mpi3-rma _______________________________________________ mpi3-rma mailing list mpi3-rma(a)lists.mpi-forum.org http://lists.mpi-forum.org/mailman/listinfo.cgi/mpi3-rma

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Re: [Mpi3-rma] RMA phone call next Tuesday, Dec 9
by Darius Buntinas 03 Dec '08

03 Dec '08

That's fine with me. I'm available all day (at least for now :-) ). -d On 12/03/2008 11:37 AM, Richard Graham wrote: > Can we do this an hour earlier ? > > Rich > > > On 12/3/08 12:28 PM, "Hubert Ritzdorf" <ritzdorf(a)it.neclab.eu> wrote: > > It works also for me. > > Hubert > > Rajeev Thakur wrote: > > We are planning to have a conference call next Tuesday (Dec 9) for > the RMA > > working group. Since there are many time zones, would 10.00am > Central Time > > (GMT-6) work for everyone who would like to participate? I will > send the > > calling details later. > > > > Rajeev > > > > _______________________________________________ > > mpi3-rma mailing list > > mpi3-rma(a)lists.mpi-forum.org > > http://lists.mpi-forum.org/mailman/listinfo.cgi/mpi3-rma > > > > > > ------------------------------------------------------------------------ > _______________________________________________ > mpi3-rma mailing list > mpi3-rma(a)lists.mpi-forum.org > http://lists.mpi-forum.org/mailman/listinfo.cgi/mpi3-rma > > > ------------------------------------------------------------------------ > > _______________________________________________ > mpi3-rma mailing list > mpi3-rma(a)lists.mpi-forum.org > http://lists.mpi-forum.org/mailman/listinfo.cgi/mpi3-rma

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Re: [Mpi3-rma] RMA phone call next Tuesday, Dec 9
by Richard Graham 03 Dec '08

03 Dec '08

Can we do this an hour earlier ? Rich On 12/3/08 12:28 PM, "Hubert Ritzdorf" <ritzdorf(a)it.neclab.eu> wrote: > It works also for me. > > Hubert > > Rajeev Thakur wrote: >> > We are planning to have a conference call next Tuesday (Dec 9) for the RMA >> > working group. Since there are many time zones, would 10.00am Central Time >> > (GMT-6) work for everyone who would like to participate? I will send the >> > calling details later. >> > >> > Rajeev >> > >> > _______________________________________________ >> > mpi3-rma mailing list >> > mpi3-rma(a)lists.mpi-forum.org >> > http://lists.mpi-forum.org/mailman/listinfo.cgi/mpi3-rma >> > >> > > > > _______________________________________________ > mpi3-rma mailing list > mpi3-rma(a)lists.mpi-forum.org > http://lists.mpi-forum.org/mailman/listinfo.cgi/mpi3-rma

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Re: [Mpi3-rma] RMA phone call next Tuesday, Dec 9
by Hubert Ritzdorf 03 Dec '08

03 Dec '08

It works also for me. Hubert Rajeev Thakur wrote: > We are planning to have a conference call next Tuesday (Dec 9) for the RMA > working group. Since there are many time zones, would 10.00am Central Time > (GMT-6) work for everyone who would like to participate? I will send the > calling details later. > > Rajeev > > _______________________________________________ > mpi3-rma mailing list > mpi3-rma(a)lists.mpi-forum.org > http://lists.mpi-forum.org/mailman/listinfo.cgi/mpi3-rma > >

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