March 2011 - mpiwg-ft - mailman3.cels.anl.gov

[Mpi3-ft] Proposal Updates
by Joshua Hursey 29 Mar '11

29 Mar '11

Per our discussion at the MPI Forum meeting on Monday, March 28 I have updated the Run-through stabilization and Process recovery proposals. Run-through stabilization - Added a discussion point about a fault tolerant collective keyword https://svn.mpi-forum.org/trac/mpi-forum-web/wiki/ft/run_through_stabilizat… Process Recovery - Added a few discussion points - Updated document to reflect the decision that collectives should not be disabled by rejoining processes only by newly failed processes. - Added some clarification on when the generation number is advanced. - Added an example to help illustrate the multiple restoration discussion point. https://svn.mpi-forum.org/trac/mpi-forum-web/wiki/ft/process_recovery One important question to think about is the following discussion point regarding layered libraries. https://svn.mpi-forum.org/trac/mpi-forum-web/wiki/ft/process_recovery#discu… Let me know what you think. -- Josh ------------------------------------ Joshua Hursey Postdoctoral Research Associate Oak Ridge National Laboratory http://users.nccs.gov/~jjhursey

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[Mpi3-ft] FT Working Group Teleconf *Special Time/Day*
by Joshua Hursey 24 Mar '11

24 Mar '11

It was requested that we have a teleconf number available for the FT Working Group Meeting at the MPI Forum. We will use the same teleconf dial-in information as we do for the regular teleconfs. More details below... Date: Monday, March 28, 2011 Time: 1-3:30 pm CDT/Chicago Dial-in information: 877-801-8130 Code: 1044056 Agenda: - Process recovery proposal (Josh H.) https://svn.mpi-forum.org/trac/mpi-forum-web/wiki/ft/process_recovery - Run-through stabilization proposal (Josh H.) https://svn.mpi-forum.org/trac/mpi-forum-web/wiki/ft/run_through_stabilizat… - Piggybacking? (Martin S.) https://svn.mpi-forum.org/trac/mpi-forum-web/wiki/Piggybacking - Other items? MPI Forum Meeting Agenda: http://meetings.mpi-forum.org/secretary/2011/03/agenda.php Next Meetings: * March 28, 2010 (MPI Forum Meeting) * April 13, 2010 (Teleconf) * April 27, 2010 (Teleconf) * May 9, 2010 (MPI Forum Meeting) Respond to the list if you have any additional topics that you would like to discuss. -- Josh ------------------------------------ Joshua Hursey Postdoctoral Research Associate Oak Ridge National Laboratory http://users.nccs.gov/~jjhursey

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Re: [Mpi3-ft] FT Working Group Teleconf
by George R Carr Jr 23 Mar '11

23 Mar '11

I just got an "invalid code" message. Will try again, but ??? >Reminder that we have a teleconf tomorrow, Wed 3/23/2011, at 12 noon EDT. > >Date: March 23, 2011 >Time: 12 noon EDT/New York >Dial-in information: >877-801-8130 >Code: 1044056 > >Agenda: >- Piggybacking? (Martin S.) > https://svn.mpi-forum.org/trac/mpi-forum-web/wiki/Piggybacking >- Process recovery proposal (Josh H.) > https://svn.mpi-forum.org/trac/mpi-forum-web/wiki/ft/process_recovery > - Introduction >- Run-through stabilization proposal (Josh H.) > >https://svn.mpi-forum.org/trac/mpi-forum-web/wiki/ft/run_through_stabilizat… > - Discussion items from wiki page >- Other items? > > >Next Meetings: >* March 23, 2010 (Teleconf) >* March 28, 2010 (MPI Forum Meeting) >* April 13, 2010 (Teleconf) >* April 27, 2010 (Teleconf) >* May 9, 2010 (MPI Forum Meeting) > >Respond to the list if you have any additional topics that you would >like to discuss. > >-- Josh >------------------------------------ >Joshua Hursey >Postdoctoral Research Associate >Oak Ridge National Laboratory >http://users.nccs.gov/~jjhursey > > >_______________________________________________ >mpi3-ft mailing list >mpi3-ft(a)lists.mpi-forum.org >http://lists.mpi-forum.org/mailman/listinfo.cgi/mpi3-ft -- George R Carr Jr U.S. Department of Commerce NOAA/OAR/GSD Tel: 303-497-4714 Email: George.Carr(a)noaa.gov

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[Mpi3-ft] FT Working Group Teleconf
by Joshua Hursey 22 Mar '11

22 Mar '11

Reminder that we have a teleconf tomorrow, Wed 3/23/2011, at 12 noon EDT. Date: March 23, 2011 Time: 12 noon EDT/New York Dial-in information: 877-801-8130 Code: 1044056 Agenda: - Piggybacking? (Martin S.) https://svn.mpi-forum.org/trac/mpi-forum-web/wiki/Piggybacking - Process recovery proposal (Josh H.) https://svn.mpi-forum.org/trac/mpi-forum-web/wiki/ft/process_recovery - Introduction - Run-through stabilization proposal (Josh H.) https://svn.mpi-forum.org/trac/mpi-forum-web/wiki/ft/run_through_stabilizat… - Discussion items from wiki page - Other items? Next Meetings: * March 23, 2010 (Teleconf) * March 28, 2010 (MPI Forum Meeting) * April 13, 2010 (Teleconf) * April 27, 2010 (Teleconf) * May 9, 2010 (MPI Forum Meeting) Respond to the list if you have any additional topics that you would like to discuss. -- Josh ------------------------------------ Joshua Hursey Postdoctoral Research Associate Oak Ridge National Laboratory http://users.nccs.gov/~jjhursey

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[Mpi3-ft] Process Recovery Proposal
by Joshua Hursey 22 Mar '11

22 Mar '11

A first attempt at the Process Recovery proposal is at the link below: https://svn.mpi-forum.org/trac/mpi-forum-web/wiki/ft/process_recovery This proposal is meant to complement the Run-Through Stabilization proposal. It currently only covers groups and communicators. Once we get those down, then we can extend to the rest of the standard. In the teleconf tomorrow, I intend to walk through some of the high points. Next week at the MPI Forum meeting, we can dig into some of the details. As always, let me know what you think. Thanks, Josh ------------------------------------ Joshua Hursey Postdoctoral Research Associate Oak Ridge National Laboratory http://users.nccs.gov/~jjhursey

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Re: [Mpi3-ft] MPI_Comm_validate parameters
by Joshua Hursey 10 Mar '11

10 Mar '11

I just finished updating the full proposal with the new validate interfaces. https://svn.mpi-forum.org/trac/mpi-forum-web/wiki/ft/run_through_stabilizat… Let me know if you see any problem areas. Thanks, Josh On Mar 9, 2011, at 4:19 PM, Joshua Hursey wrote: > I made some adjustments to the wiki page per the teleconf today. I also added the set diagrams that I mentioned: > https://svn.mpi-forum.org/trac/mpi-forum-web/attachment/wiki/ft/run_through… > > I have not updated any of the interfaces outside of Ch. 6. I'll work on propagating those changes in the next few days, and let you all know when that is ready. But Ch. 2 and 6 are probably ready for a first glance. > > -- Josh > > ------------------------------------ > Joshua Hursey > Postdoctoral Research Associate > Oak Ridge National Laboratory > http://users.nccs.gov/~jjhursey > > > _______________________________________________ > mpi3-ft mailing list > mpi3-ft(a)lists.mpi-forum.org > http://lists.mpi-forum.org/mailman/listinfo.cgi/mpi3-ft > ------------------------------------ Joshua Hursey Postdoctoral Research Associate Oak Ridge National Laboratory http://users.nccs.gov/~jjhursey

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Re: [Mpi3-ft] MPI_Comm_validate parameters
by Joshua Hursey 09 Mar '11

09 Mar '11

I made some adjustments to the wiki page per the teleconf today. I also added the set diagrams that I mentioned: https://svn.mpi-forum.org/trac/mpi-forum-web/attachment/wiki/ft/run_through… I have not updated any of the interfaces outside of Ch. 6. I'll work on propagating those changes in the next few days, and let you all know when that is ready. But Ch. 2 and 6 are probably ready for a first glance. -- Josh ------------------------------------ Joshua Hursey Postdoctoral Research Associate Oak Ridge National Laboratory http://users.nccs.gov/~jjhursey

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Re: [Mpi3-ft] FT Working Group Teleconf
by Joshua Hursey 09 Mar '11

09 Mar '11

In preparation for our meeting today I updated the wiki with a few of the validation interface changes. I just updated Section 2.8 and Ch. 6. After our discussion of these sections, I'll update the rest of the document. -- Josh On Mar 8, 2011, at 4:26 PM, Joshua Hursey wrote: > Reminder that we have a teleconf tomorrow, Wed 3/9/2011, at 12 noon EST. > > Date: March 9, 2011 > Time: 12 noon EST/New York > Dial-in information: > 877-801-8130 > Code: 1044056 > > > Agenda: > - Piggybacking? (Martin S.) > https://svn.mpi-forum.org/trac/mpi-forum-web/wiki/Piggybacking > - Run-through stabilization proposal (Josh H.) > https://svn.mpi-forum.org/trac/mpi-forum-web/wiki/ft/run_through_stabilizat… > - MPI_Comm_validate interface > - Discussion items from wiki page > - other items? > > > Next Meetings: > * March 9, 2010 (Teleconf) > * March 23, 2010 (Teleconf) > * March 28, 2010 (MPI Forum Meeting) > * April 13, 2010 (Teleconf) > * April 27, 2010 (Teleconf) > * May 9, 2010 (MPI Forum Meeting) > > Respond to the list if you have any additional topics that you would like to discuss. > > -- Josh > ------------------------------------ > Joshua Hursey > Postdoctoral Research Associate > Oak Ridge National Laboratory > http://users.nccs.gov/~jjhursey > > > _______________________________________________ > mpi3-ft mailing list > mpi3-ft(a)lists.mpi-forum.org > http://lists.mpi-forum.org/mailman/listinfo.cgi/mpi3-ft > ------------------------------------ Joshua Hursey Postdoctoral Research Associate Oak Ridge National Laboratory http://users.nccs.gov/~jjhursey

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[Mpi3-ft] FT Working Group Teleconf
by Joshua Hursey 08 Mar '11

08 Mar '11

Reminder that we have a teleconf tomorrow, Wed 3/9/2011, at 12 noon EST. Date: March 9, 2011 Time: 12 noon EST/New York Dial-in information: 877-801-8130 Code: 1044056 Agenda: - Piggybacking? (Martin S.) https://svn.mpi-forum.org/trac/mpi-forum-web/wiki/Piggybacking - Run-through stabilization proposal (Josh H.) https://svn.mpi-forum.org/trac/mpi-forum-web/wiki/ft/run_through_stabilizat… - MPI_Comm_validate interface - Discussion items from wiki page - other items? Next Meetings: * March 9, 2010 (Teleconf) * March 23, 2010 (Teleconf) * March 28, 2010 (MPI Forum Meeting) * April 13, 2010 (Teleconf) * April 27, 2010 (Teleconf) * May 9, 2010 (MPI Forum Meeting) Respond to the list if you have any additional topics that you would like to discuss. -- Josh ------------------------------------ Joshua Hursey Postdoctoral Research Associate Oak Ridge National Laboratory http://users.nccs.gov/~jjhursey

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[Mpi3-ft] useful for i/o chapter?
by Howard Pritchard 08 Mar '11

08 Mar '11

Hi Folks, I thought that a spreadsheet might be useful for quantifying what we may need to do for the run-through stabilization proposal with respect to i/o chapter. I have started working on one which has all (I think) the mpi-io functions in column 1, then a column 2 for comments about when the comm error handler might return MPI_ERR_RANK_STOP owing to some comm part of the operation failing, and column 3 about when MPI_ERR_IO might be returned on the file handle error handler function. Then since no one ( to my knowledge) has their own mpi-io, I have a column 4 notes about the romio implementation. There are a lot of functions, so I just have attached what I've started. Any suggestions on whether this approach is even worthwhile, or maybe other columns to add to the spreadsheet would be appreciated. I don't want to waste time with something that isn't helpful. Thanks, Hoard -- Howard Pritchard Software Engineering Cray, Inc.

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