March 2012 - mpi-forum - mailman3.cels.anl.gov

ticket278 updated
by Fab Tillier 07 Mar '12

07 Mar '12

I just uploaded the updated PDF to the ticket, hopefully I got it right. See y'all at the reading in 6 hours. -Fab

1 0

Re: [Mpi-forum] Fault Tolerance Readings
by Rajeev Thakur 06 Mar '12

06 Mar '12

pg 538, ln 11-12: for nonblocking operations, it should be "initiation" instead of "initialization" For the text on I/O in 17.2.5, pg 541: In independent I/O functions, each process performs I/O on its own, so it won't detect failure of another process. The issue is in collective functions, and it applies equally to both reading and writing. It is not related to whether writes are buffered, but whether collective functions are synchronizing are not (they don't have to be). So, I would replace the text on lines 5-11 with simply this text: "Since collective I/O functions may not synchronize with other processes, process failures may not be reported during a collective I/O function. If a process failure prevents a file operation from completing, an error of class MPI_ERR_PROC_FAILED is raised." For MPI_File_invalidate, as I had said during the reading, it is the file handle, not the file, that is invalidated. So the text should be modified to: "This function notifies all ranks within file handle fh that this file handle is now considered invalid. An invalidated file handle completes any non-local completion operations on fh (see Section 17.2.5) and causes a new operation to complete with error. Once a file handle has been invalidated, all subsequent non-local operations on the file handle must fail with an error of class MPI_ERR_INVALIDATED." On Mar 6, 2012, at 9:39 PM, Josh Hursey wrote: > Tomorrow the FT working group will be presenting a revised version of #323 that include the ticket0 changes mentioned in the meeting. A new pdf is attached to ticket #323: > https://svn.mpi-forum.org/trac/mpi-forum-web/ticket/323 > https://svn.mpi-forum.org/trac/mpi-forum-web/attachment/ticket/323/mpi-repo… > > Based on forum feedback, the working group has separated dynamics, rma, and I/O into separate tickets for additional consideration. In addition to reading #323 we will also be reading #327 and #326 > https://svn.mpi-forum.org/trac/mpi-forum-web/ticket/327 > https://svn.mpi-forum.org/trac/mpi-forum-web/ticket/326 > > We are postponing the reading of #325 until a future meeting: > https://svn.mpi-forum.org/trac/mpi-forum-web/ticket/325 > > -- Josh > > On Mon, Feb 27, 2012 at 12:16 PM, Josh Hursey <jjhursey(a)open-mpi.org> wrote: > The Fault Tolerance Working Group has a session from 1-6 pm on March 5, 2012 during which we will have a formal reading of two FT related tickets, linked below. > > User-Level Failure Mitigation: > https://svn.mpi-forum.org/trac/mpi-forum-web/ticket/323 > > Clarify MPI_ERRORS_ARE_FATAL scope of abort: > https://svn.mpi-forum.org/trac/mpi-forum-web/ticket/324 > > The working group will be providing an overview of the User-Level Failure Mitigation proposal followed by the first reading. > > Thanks, > Josh > > > -- > Joshua Hursey > Postdoctoral Research Associate > Oak Ridge National Laboratory > http://users.nccs.gov/~jjhursey > > > > -- > Joshua Hursey > Postdoctoral Research Associate > Oak Ridge National Laboratory > http://users.nccs.gov/~jjhursey > _______________________________________________ > mpi-forum mailing list > mpi-forum(a)lists.mpi-forum.org > http://lists.mpi-forum.org/mailman/listinfo.cgi/mpi-forum

1 0

Ticket 313
by Marc Snir 06 Mar '12

06 Mar '12

Is ready for a reading Marc Snir

1 0

Re: [Mpi-forum] Fault Tolerance Readings
by Thomas Herault 06 Mar '12

06 Mar '12

Le 6 mars 2012 ï¿½ 22:09, Rajeev Thakur a ï¿½crit : > There is no pdf or text attached to tickets 326 and 327. > > Rajeev We are working on generating them, they should be up in 10min. Thomas > > On Mar 6, 2012, at 9:39 PM, Josh Hursey wrote: > >> Tomorrow the FT working group will be presenting a revised version of #323 that include the ticket0 changes mentioned in the meeting. A new pdf is attached to ticket #323: >> https://svn.mpi-forum.org/trac/mpi-forum-web/ticket/323 >> https://svn.mpi-forum.org/trac/mpi-forum-web/attachment/ticket/323/mpi-repo… >> >> Based on forum feedback, the working group has separated dynamics, rma, and I/O into separate tickets for additional consideration. In addition to reading #323 we will also be reading #327 and #326 >> https://svn.mpi-forum.org/trac/mpi-forum-web/ticket/327 >> https://svn.mpi-forum.org/trac/mpi-forum-web/ticket/326 >> >> We are postponing the reading of #325 until a future meeting: >> https://svn.mpi-forum.org/trac/mpi-forum-web/ticket/325 >> >> -- Josh >> >> On Mon, Feb 27, 2012 at 12:16 PM, Josh Hursey <jjhursey(a)open-mpi.org> wrote: >> The Fault Tolerance Working Group has a session from 1-6 pm on March 5, 2012 during which we will have a formal reading of two FT related tickets, linked below. >> >> User-Level Failure Mitigation: >> https://svn.mpi-forum.org/trac/mpi-forum-web/ticket/323 >> >> Clarify MPI_ERRORS_ARE_FATAL scope of abort: >> https://svn.mpi-forum.org/trac/mpi-forum-web/ticket/324 >> >> The working group will be providing an overview of the User-Level Failure Mitigation proposal followed by the first reading. >> >> Thanks, >> Josh >> >> >> -- >> Joshua Hursey >> Postdoctoral Research Associate >> Oak Ridge National Laboratory >> http://users.nccs.gov/~jjhursey >> >> >> >> -- >> Joshua Hursey >> Postdoctoral Research Associate >> Oak Ridge National Laboratory >> http://users.nccs.gov/~jjhursey >> _______________________________________________ >> mpi-forum mailing list >> mpi-forum(a)lists.mpi-forum.org >> http://lists.mpi-forum.org/mailman/listinfo.cgi/mpi-forum > > > _______________________________________________ > mpi-forum mailing list > mpi-forum(a)lists.mpi-forum.org > http://lists.mpi-forum.org/mailman/listinfo.cgi/mpi-forum

1 0

Re: [Mpi-forum] Fault Tolerance Readings
by Rajeev Thakur 06 Mar '12

06 Mar '12

There is no pdf or text attached to tickets 326 and 327. Rajeev On Mar 6, 2012, at 9:39 PM, Josh Hursey wrote: > Tomorrow the FT working group will be presenting a revised version of #323 that include the ticket0 changes mentioned in the meeting. A new pdf is attached to ticket #323: > https://svn.mpi-forum.org/trac/mpi-forum-web/ticket/323 > https://svn.mpi-forum.org/trac/mpi-forum-web/attachment/ticket/323/mpi-repo… > > Based on forum feedback, the working group has separated dynamics, rma, and I/O into separate tickets for additional consideration. In addition to reading #323 we will also be reading #327 and #326 > https://svn.mpi-forum.org/trac/mpi-forum-web/ticket/327 > https://svn.mpi-forum.org/trac/mpi-forum-web/ticket/326 > > We are postponing the reading of #325 until a future meeting: > https://svn.mpi-forum.org/trac/mpi-forum-web/ticket/325 > > -- Josh > > On Mon, Feb 27, 2012 at 12:16 PM, Josh Hursey <jjhursey(a)open-mpi.org> wrote: > The Fault Tolerance Working Group has a session from 1-6 pm on March 5, 2012 during which we will have a formal reading of two FT related tickets, linked below. > > User-Level Failure Mitigation: > https://svn.mpi-forum.org/trac/mpi-forum-web/ticket/323 > > Clarify MPI_ERRORS_ARE_FATAL scope of abort: > https://svn.mpi-forum.org/trac/mpi-forum-web/ticket/324 > > The working group will be providing an overview of the User-Level Failure Mitigation proposal followed by the first reading. > > Thanks, > Josh > > > -- > Joshua Hursey > Postdoctoral Research Associate > Oak Ridge National Laboratory > http://users.nccs.gov/~jjhursey > > > > -- > Joshua Hursey > Postdoctoral Research Associate > Oak Ridge National Laboratory > http://users.nccs.gov/~jjhursey > _______________________________________________ > mpi-forum mailing list > mpi-forum(a)lists.mpi-forum.org > http://lists.mpi-forum.org/mailman/listinfo.cgi/mpi-forum

1 0

Re: [Mpi-forum] Fault Tolerance Readings
by Josh Hursey 06 Mar '12

06 Mar '12

Tomorrow the FT working group will be presenting a revised version of #323 that include the ticket0 changes mentioned in the meeting. A new pdf is attached to ticket #323: https://svn.mpi-forum.org/trac/mpi-forum-web/ticket/323 https://svn.mpi-forum.org/trac/mpi-forum-web/attachment/ticket/323/mpi-repo… Based on forum feedback, the working group has separated dynamics, rma, and I/O into separate tickets for additional consideration. In addition to reading #323 we will also be reading #327 and #326 https://svn.mpi-forum.org/trac/mpi-forum-web/ticket/327 https://svn.mpi-forum.org/trac/mpi-forum-web/ticket/326 We are postponing the reading of #325 until a future meeting: https://svn.mpi-forum.org/trac/mpi-forum-web/ticket/325 -- Josh On Mon, Feb 27, 2012 at 12:16 PM, Josh Hursey <jjhursey(a)open-mpi.org> wrote: > The Fault Tolerance Working Group has a session from 1-6 pm on March 5, > 2012 during which we will have a formal reading of two FT related tickets, > linked below. > > User-Level Failure Mitigation: > https://svn.mpi-forum.org/trac/mpi-forum-web/ticket/323 > > Clarify MPI_ERRORS_ARE_FATAL scope of abort: > https://svn.mpi-forum.org/trac/mpi-forum-web/ticket/324 > > The working group will be providing an overview of the User-Level Failure > Mitigation proposal followed by the first reading. > > Thanks, > Josh > > > -- > Joshua Hursey > Postdoctoral Research Associate > Oak Ridge National Laboratory > http://users.nccs.gov/~jjhursey > -- Joshua Hursey Postdoctoral Research Associate Oak Ridge National Laboratory http://users.nccs.gov/~jjhursey

1 0

Voting today
by Jeffrey Squyres 06 Mar '12

06 Mar '12

Minor note: I fixed today's agenda -- #298 ("Adding clarification to MPI_WIN_LOCK_ALL") is a *2nd* vote, not a *1st* vote. Also, although votes are determined by majority, we strive for consensus. Hence, I intend to bring up the prior voting results for all 2nd votes today, and ask those who voted no or abstained why they voted that way. The 2nd votes today are: - Adding clarification to MPI_WIN_LOCK_ALL Jan 2012 1st vote result: 16-0-0-2 (16 yes, 0 no, 0 abstain, 2 miss -- miss=abstain) https://svn.mpi-forum.org/trac/mpi-forum-web/ticket/298 - New MPI-3 Fortran support Jan 2012 1st vote result: 16-0-1-1 https://svn.mpi-forum.org/trac/mpi-forum-web/ticket/229 - Change displs arguments in neighborhood w collectives to MPI_Aint Jan 2012 1st vote result: 17-0-1-0 https://svn.mpi-forum.org/trac/mpi-forum-web/ticket/299 We don't publish individual organization votes on public web pages (and this list is archived to a public web site), so I'll give heads-ups to the "no" and [non-miss] "abstain" organizations in off-list emails. -- Jeff Squyres jsquyres(a)cisco.com For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/

1 0

FT chapter "fail" definition
by Jeff Hammond 05 Mar '12

05 Mar '12

http://en.wikipedia.org/wiki/File:Train_wreck_at_Montparnasse_1895_FAIL.jpg Such a graphic would go a long way towards helping the MPI community understand the definition of "fail". Jeff -- Jeff Hammond Argonne Leadership Computing Facility University of Chicago Computation Institute jhammond(a)alcf.anl.gov / (630) 252-5381 http://www.linkedin.com/in/jeffhammond https://wiki.alcf.anl.gov/old/index.php/User:Jhammond https://wiki-old.alcf.anl.gov/index.php/User:Jhammond

1 0

Re: [Mpi-forum] overloading MPI_Init etc.
by Darius Buntinas 05 Mar '12

05 Mar '12

On Mar 5, 2012, at 7:29 AM, Jeffrey Squyres wrote: > Patient: "Doc, it hurts when I move my arm like this." Patient: "Doc, it hurts when I hit my toe with a hammer." > Doc: "Don't do that. $20 co-pay, please."

1 0

Re: [Mpi-forum] NOTE: Agenda change
by Graham, Richard L. 05 Mar '12

05 Mar '12

Sure, you have a 3 hour block, so if you want to use some of this on 313, that is fine. An issue will be that folks have not had a chance to look at this up front. Rich On Mar 4, 2012, at 7:52 PM, Marc Snir wrote: > 313 is not on agenda. It is cleaning up the text on init and finalize that is quite confused (in fact, wrong) as it stands now. Could I start with this tomorrow? This has a strong connection to 310-311, > > On Feb 29, 2012, at 2:52 PM, Graham, Richard L. wrote: > >> Note that a large swap was made in the agenda on Monday - the hybrid-wg and the ft-wg plenary sessions were swapped to accommodate someones travel schedule. >> >> Rich >> _______________________________________________ >> mpi-forum mailing list >> mpi-forum(a)lists.mpi-forum.org >> http://lists.mpi-forum.org/mailman/listinfo.cgi/mpi-forum > > > _______________________________________________ > mpi-forum mailing list > mpi-forum(a)lists.mpi-forum.org > http://lists.mpi-forum.org/mailman/listinfo.cgi/mpi-forum

1 0