July 2009 - mpiwg-hybridpm - mailman3.cels.anl.gov

[Mpi3-hybridpm] Canceling the telecon on 07/21
by Pavan Balaji 20 Jul '09

20 Jul '09

All, Sorry for the late notice. Not much got done on the current tickets after the previous telecon and given that the Forum face-to-face meeting is next week itself, I think we can cancel tomorrow's telecon. If there's anything to discuss before the Forum that I'm forgetting, please do let me know. Thanks, -- Pavan -- Pavan Balaji http://www.mcs.anl.gov/~balaji

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Re: [Mpi3-hybridpm] slides from today
by Jeff Squyres 07 Jul '09

07 Jul '09

Thanks. I added a cross-link on the notes page. On Jul 7, 2009, at 4:53 PM, Steven Oyanagi wrote: > On 07/07/2009 03:01 PM, Jeff Squyres wrote: > > https://svn.mpi-forum.org/trac/mpi-forum-web/wiki/MPI3Hybrid/notes-2009-07-… > makes > > reference to some slides on the wiki that were presented today. > > > > Can you cross link exactly which slides you're talking about? > There's a > > bunch of different slide PDFs on the hybrid wiki page. > > > > Thanks! > > > > The slides you are looking for are on the page: > > https://svn.mpi-forum.org/trac/mpi-forum-web/wiki/MPI3Hybrid > > at the bottom of the page under "Attachments" look at: > > # mpi_upc.pdf (401.6 kB) - added by balaji 23 minutes ago. > Discussion slides for MPI-UPC hybrid > > which is: > > https://svn.mpi-forum.org/trac/mpi-forum-web/attachment/wiki/MPI3Hybrid/mpi… > > > - Steve > _______________________________________________ > Mpi3-hybridpm mailing list > Mpi3-hybridpm(a)lists.mpi-forum.org > http://lists.mpi-forum.org/mailman/listinfo.cgi/mpi3-hybridpm > -- Jeff Squyres Cisco Systems

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Re: [Mpi3-hybridpm] slides from today
by Steven Oyanagi 07 Jul '09

07 Jul '09

On 07/07/2009 03:01 PM, Jeff Squyres wrote: > https://svn.mpi-forum.org/trac/mpi-forum-web/wiki/MPI3Hybrid/notes-2009-07-… makes > reference to some slides on the wiki that were presented today. > > Can you cross link exactly which slides you're talking about? There's a > bunch of different slide PDFs on the hybrid wiki page. > > Thanks! > The slides you are looking for are on the page: https://svn.mpi-forum.org/trac/mpi-forum-web/wiki/MPI3Hybrid at the bottom of the page under "Attachments" look at: # mpi_upc.pdf (401.6 kB) - added by balaji 23 minutes ago. Discussion slides for MPI-UPC hybrid which is: https://svn.mpi-forum.org/trac/mpi-forum-web/attachment/wiki/MPI3Hybrid/mpi… - Steve

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[Mpi3-hybridpm] slides from today
by Jeff Squyres 07 Jul '09

07 Jul '09

https://svn.mpi-forum.org/trac/mpi-forum-web/wiki/MPI3Hybrid/notes-2009-07-… makes reference to some slides on the wiki that were presented today. Can you cross link exactly which slides you're talking about? There's a bunch of different slide PDFs on the hybrid wiki page. Thanks! -- Jeff Squyres Cisco Systems

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Re: [Mpi3-hybridpm] Reminder: Telecon tomorrow
by Pavan Balaji 07 Jul '09

07 Jul '09

All, The meeting minutes from today's call are online: https://svn.mpi-forum.org/trac/mpi-forum-web/wiki/MPI3Hybrid/notes-2009-07-… The next call will be on July 21st at the same time. Thanks, -- Pavan On 07/07/2009 11:02 AM, Pavan Balaji wrote: > > Attached are some slides for discussion today. > > -- Pavan > > On 07/06/2009 09:34 PM, Pavan Balaji wrote: >> All, >> >> This is a reminder for the hybrid WG telecon tomorrow. Here's the >> telecon information: >> >> Passcode: 85444 >> Domestic dial number: 888-566-1533 >> International dial number: 212-547-0383 >> >> The main discussion item tomorrow is the MPI-UPC hybrid ticket >> (https://svn.mpi-forum.org/trac/mpi-forum-web/ticket/167) >> >> -- Pavan >> > > > ------------------------------------------------------------------------ > > _______________________________________________ > Mpi3-hybridpm mailing list > Mpi3-hybridpm(a)lists.mpi-forum.org > http://lists.mpi-forum.org/mailman/listinfo.cgi/mpi3-hybridpm -- Pavan Balaji http://www.mcs.anl.gov/~balaji

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Re: [Mpi3-hybridpm] Reminder: Telecon tomorrow
by Pavan Balaji 07 Jul '09

07 Jul '09

Attached are some slides for discussion today. -- Pavan On 07/06/2009 09:34 PM, Pavan Balaji wrote: > All, > > This is a reminder for the hybrid WG telecon tomorrow. Here's the > telecon information: > > Passcode: 85444 > Domestic dial number: 888-566-1533 > International dial number: 212-547-0383 > > The main discussion item tomorrow is the MPI-UPC hybrid ticket > (https://svn.mpi-forum.org/trac/mpi-forum-web/ticket/167) > > -- Pavan > -- Pavan Balaji http://www.mcs.anl.gov/~balaji

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Re: [Mpi3-hybridpm] Reminder: Telecon tomorrow
by Jeff Squyres 07 Jul '09

07 Jul '09

I unfortunately have a conflict and will be unable to attend. Can someone send out minutes after the call? Thanks! On Jul 6, 2009, at 10:34 PM, Pavan Balaji wrote: > All, > > This is a reminder for the hybrid WG telecon tomorrow. Here's the > telecon information: > > Passcode: 85444 > Domestic dial number: 888-566-1533 > International dial number: 212-547-0383 > > The main discussion item tomorrow is the MPI-UPC hybrid ticket > (https://svn.mpi-forum.org/trac/mpi-forum-web/ticket/167) > > -- Pavan > > -- > Pavan Balaji > http://www.mcs.anl.gov/~balaji > _______________________________________________ > Mpi3-hybridpm mailing list > Mpi3-hybridpm(a)lists.mpi-forum.org > http://lists.mpi-forum.org/mailman/listinfo.cgi/mpi3-hybridpm > -- Jeff Squyres Cisco Systems

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Re: [Mpi3-hybridpm] Reminder: Telecon tomorrow
by Pavan Balaji 06 Jul '09

06 Jul '09

Time: 11am central -- Pavan On 07/06/2009 09:34 PM, Pavan Balaji wrote: > All, > > This is a reminder for the hybrid WG telecon tomorrow. Here's the > telecon information: > > Passcode: 85444 > Domestic dial number: 888-566-1533 > International dial number: 212-547-0383 > > The main discussion item tomorrow is the MPI-UPC hybrid ticket > (https://svn.mpi-forum.org/trac/mpi-forum-web/ticket/167) > > -- Pavan > -- Pavan Balaji http://www.mcs.anl.gov/~balaji

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[Mpi3-hybridpm] Reminder: Telecon tomorrow
by Pavan Balaji 06 Jul '09

06 Jul '09

All, This is a reminder for the hybrid WG telecon tomorrow. Here's the telecon information: Passcode: 85444 Domestic dial number: 888-566-1533 International dial number: 212-547-0383 The main discussion item tomorrow is the MPI-UPC hybrid ticket (https://svn.mpi-forum.org/trac/mpi-forum-web/ticket/167) -- Pavan -- Pavan Balaji http://www.mcs.anl.gov/~balaji

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Re: [Mpi3-hybridpm] MPI thread requirements (was RE: Telecon: 06/23)
by Pavan Balaji 03 Jul '09

03 Jul '09

>> Coming back to the matter of MPI requirements to the threads, I think >> the requirement should be formulated in a functional manner, e.g.: >> >> "A threading subsystem should guarantee that all threads that call MPI >> routines will get proper attention of the processor." >> >> Or better words to this effect. Please comment. >> >> FYI, I'm going to be on vacation until July 27, so, you may expect >> substantial delay in my replies. > > That's the same as defining progress. I'm not personally against that > since progress is easy to define in formal terms. However, there seems > to be heavy pushback from the general community. It may just be easier > to let the MPI implementation define the thread packages it is > compatible with. This restriction is from the standard itself, and does not depend on specific implementations. So, I think it is necessary that the standard itself state what it expects from the thread library. On top of that, each implementation is welcome to have any additional restrictions that it cares about. Having said that I don't particularly like the description example provided. Primarily, it's not the processor that needs to give attention to the threads, but the OS (e.g., if there are 4 threads on a single core, they can still run concurrently if the OS knows how to suspend them). As far as I can tell, the only restriction here is that when there is a thread that is ready to run, it should eventually be allowed to run irrespective of what any other thread or process on the system is doing. That is, its execution cannot depend on what state another thread or process is in. -- Pavan -- Pavan Balaji http://www.mcs.anl.gov/~balaji

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