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

[Mpi3-ft] MPI 3.0 First Reading Timeline
by Josh Hursey 26 May '11

26 May '11

The Run-Through Stabilization (RTS) proposal was elected to be one of the 3 gating features for MPI 3.0 standardization. This means that the release of MPI 3.0 will be determined, in part, upon when this proposal is voted on. The MPI Forum would like to wrap up the MPI 3.0 document in the next 5 meetings. The Process Recovery proposal will continue to be pushed forward, but will likely be considered for MPI 3.1. Due to the accelerated timeline, instead of having a plenary session on the RTS proposal in the July meeting, we will have a first reading. 2 weeks before the first reading the altered standard PDF must be submitted for review (which is July 4). So over the next month we need to be synthesizing the text from the wiki and pushing it into the standard Latex format. The MPI standard Latex is not publicly accessible, but a few of the FT WG members have access, including myself. What we will do is post the working PDF on the wiki, and send an email out to the list once it is ready for review. We will use the working group mailing list to coordinate edits to the document. The MPI Standard PDF is meant to be a concise definition of the interface and semantics, so the current wiki page will likely be compressed quite a bit. Many of the additional details and examples will likely be represented in a secondary document (for now we will collect these items on the wiki). I will take a first pass at the initial proposal draft. I will mostly be pushing in the necessary pieces off the wiki, and will post the PDF no later than June 6 (hopefully before the end of next week). Below is a rough timeline for the preparation of the standard PDF proposal: June 6: Initial draft available June 8: Teleconf: Discuss draft and outstanding issues June 9-21: Revise the draft on the mailing list June 22: Teleconf: Discuss draft progress June 23-28: Continue to revise the draft on the mailing list June 29: Final draft completed. (Teleconf, as needed) June 29-July 3: Final touch ups before release to full forum, as needed July 4: Send out final draft to MPI Forum mailing list Once the draft is complete we need to work on a short presentation to proceed the first reading. The idea of the presentation is to provide the MPI Forum an introduction to the general concepts of the proposal, and to briefly discuss some application use cases. Between July 4 and July 18 we will be preparing the presentation, and posting (a PDF version of) the slides to the wiki page for the group to review. So exciting times, but a lot of writing left to do. Let me know if you have any questions or comments on how we are proceeding forward. Thank you for all your hard work thus far. 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
by Josh Hursey 24 May '11

24 May '11

Reminder that we have a teleconf tomorrow, Wed 5/25/2011, at 12 noon EDT. Date: May 25, 2011 Time: 12 noon EDT/New York Dial-in information: 877-801-8130 Code: 1044056 Agenda: - MPI 3.0 Preparation ï¿½ - July Meeting will have the first reading of RTS proposal ï¿½ - Discuss todo items, and timeline - Piggybacking? (Martin S.) ï¿½https://svn.mpi-forum.org/trac/mpi-forum-web/wiki/Piggybacking - Run-through stabilization proposal (Josh H.) ï¿½https://svn.mpi-forum.org/trac/mpi-forum-web/wiki/ft/run_through_stabili… ï¿½- Discussion items from wiki page & mailing list - Process recovery proposal (Josh H.) ï¿½https://svn.mpi-forum.org/trac/mpi-forum-web/wiki/ft/process_recovery ï¿½- Open Discussion - Other items? Next Meetings: * May ï¿½ 25, 2011 (Teleconf) * June ï¿½ 8, 2011 (Teleconf) * June ï¿½22, 2011 (Teleconf) * July ï¿½ 6, 2011 (Teleconf) * July ï¿½18, 2011 (MPI Forum Meeting) * Aug. ï¿½ 3, 2011 (Teleconf) * Aug. ï¿½17, 2011 (Teleconf) * Aug. ï¿½31, 2011 (Teleconf) * Sept. 14, 2011 (Teleconf) * Sept. 22, 2011 (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] Fwd: MPI-3 FT webex
by Josh Hursey 09 May '11

09 May '11

Find the webex information in the message below. Begin forwarded message: > From: "Jeff Squyres (jsquyres)" <jsquyres(a)cisco.com> > Date: May 9, 2011 4:19:40 PM EDT > To: "Hursey, Joshua J." <hurseyjj(a)ornl.gov>, "schulzm(a)llnl.gov" <schulzm(a)llnl.gov> > Subject: MPI-3 FT webex > > ----- WebEx Invite ----- > > Meeting Number: 206555849 > Password: ftft > > ------------------------ > To join the meeting online > ------------------------ > 1. Go to blockedhttps://cisco.webex.com/cisco/j.php?ED=165193882&UID=0&PW=NOWMyYTVjZ… > 2. Enter your name and email address. > 3. Enter the meeting password: ftft > 4. Click "Join". > 5. If the meeting includes a teleconference, follow the instructions that appear on your screen. > > ------------------------ > To join the teleconference only > ------------------------ > 1. Dial into Cisco WebEx - view all Global Access Numbers at > blockedhttp://cisco.com/en/US/about/doing_business/conferencing/index.html > 2. Follow the prompts to enter the Meeting Number (listed above) or Access Code followed by the # sign. > > San Jose, CA: +1.408.525.6800 RTP: +1.919.392.3330 > US/Canada: +1.866.432.9903 United Kingdom: +44.20.8824.0117 > India: +91.80.4350.1111 Germany: +49.619.6773.9002 > Japan: +81.3.5763.9394 China: +86.10.8515.5666 > > Access code: 206555849 > > Sign up for a free trial of WebEx > blockedhttp://www.webex.com/go/mcemfreetrial > > IMPORTANT NOTICE: This WebEx service includes a feature that allows audio and any documents and other materials exchanged or viewed during the session to be recorded. By joining this session, you automatically consent to such recordings. If you do not consent to the recording, do not join the session. ------------------------------------ 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

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Re: [Mpi3-ft] FT Working Group Teleconf (Special Time/Day)
by Josh Hursey 09 May '11

09 May '11

I am on the line. Whenever you all have a chance to dial me in. Thanks, Josh On Mon, May 9, 2011 at 9:24 AM, Josh Hursey <jjhursey(a)open-mpi.org> wrote: > The MPI Forum meeting is this week. The Fault Tolerance Working Group > is scheduled to be held from 1-3 pm PDT today (Monday). We have setup > a teleconference for the meeting (I will be attending this way). More > information below. > > Date: May 9, 2011 > Time: 1-3 pm PDT/San Jose, CA (4-6 pm EDT/New York) > Dial-in information: > 877-801-8130 > Code: 1044056 > > Agenda: > - Piggybacking? (Martin S.) > ï¿½ï¿½https://svn.mpi-forum.org/trac/mpi-forum-web/wiki/Piggybacking > - Run-through stabilization proposal (Josh H.) > ï¿½ https://svn.mpi-forum.org/trac/mpi-forum-web/wiki/ft/run_through_stabilizat… > ï¿½ - Discussion items from wiki page & mailing list > - Process recovery proposal (Josh H.) > ï¿½ https://svn.mpi-forum.org/trac/mpi-forum-web/wiki/ft/process_recovery > ï¿½ - Open Discussion > - Other items? > > > Next Meetings: > * May ï¿½9, 2011 (MPI Forum Meeting) > * May 25, 2011 (Teleconf) > * June ï¿½8, 2011 (Teleconf) > * June 22, 2011 (Teleconf) > * July ï¿½6, 2011 (Teleconf) > * July 18, 2011 (MPI Forum Meeting) > * Aug. ï¿½3, 2011 (Teleconf) > * Aug. 17, 2011 (Teleconf) > * Aug. 31, 2011 (Teleconf) > * Sept. 14, 2011 (Teleconf) > * Sept. 22, 2011 (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] FT Working Group Teleconf (Special Time/Day)
by Josh Hursey 09 May '11

09 May '11

The MPI Forum meeting is this week. The Fault Tolerance Working Group is scheduled to be held from 1-3 pm PDT today (Monday). We have setup a teleconference for the meeting (I will be attending this way). More information below. Date: May 9, 2011 Time: 1-3 pm PDT/San Jose, CA (4-6 pm EDT/New York) Dial-in information: 877-801-8130 Code: 1044056 Agenda: - Piggybacking? (Martin S.) ï¿½https://svn.mpi-forum.org/trac/mpi-forum-web/wiki/Piggybacking - Run-through stabilization proposal (Josh H.) ï¿½ https://svn.mpi-forum.org/trac/mpi-forum-web/wiki/ft/run_through_stabilizat… ï¿½ - Discussion items from wiki page & mailing list - Process recovery proposal (Josh H.) ï¿½ https://svn.mpi-forum.org/trac/mpi-forum-web/wiki/ft/process_recovery ï¿½ - Open Discussion - Other items? Next Meetings: * May 9, 2011 (MPI Forum Meeting) * May 25, 2011 (Teleconf) * June 8, 2011 (Teleconf) * June 22, 2011 (Teleconf) * July 6, 2011 (Teleconf) * July 18, 2011 (MPI Forum Meeting) * Aug. 3, 2011 (Teleconf) * Aug. 17, 2011 (Teleconf) * Aug. 31, 2011 (Teleconf) * Sept. 14, 2011 (Teleconf) * Sept. 22, 2011 (MPI Forum Meeting) Respond to the list if you have any additional topics that you would like to discuss. -- Josh

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Re: [Mpi3-ft] mpi file set view question
by Joshua Hursey 02 May '11

02 May '11

Yeah I didn't really know what to set as the default behavior for that function. Does someone have experience using it that could suggest a reasonable value? Thanks, Josh On May 2, 2011, at 12:39 PM, Howard Pritchard wrote: > Hi Folks, > > Did we ever decide how mpi_file_set_view would work after > the application has MPI_File_validate_sync on the file handle? > > I could see some apps wanting 'holes' for missing processes, > but then other times it might not want holes. > > Could this behavior be handled by some kind of pre-defined > info key and then the app would pass that in to MPI_file_set_view > after doing the mpi_file_validate_sync? An issue I see with > this approach is there's no way to get back what the info value > was using MPI_File_get_view. > > Howard > > -- > Howard Pritchard > Software Engineering > Cray, Inc. > _______________________________________________ > mpi3-ft mailing list > mpi3-ft(a)lists.mpi-forum.org > http://lists.mpi-forum.org/mailman/listinfo.cgi/mpi3-ft

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[Mpi3-ft] mpi file set view question
by Howard Pritchard 02 May '11

02 May '11

Hi Folks, Did we ever decide how mpi_file_set_view would work after the application has MPI_File_validate_sync on the file handle? I could see some apps wanting 'holes' for missing processes, but then other times it might not want holes. Could this behavior be handled by some kind of pre-defined info key and then the app would pass that in to MPI_file_set_view after doing the mpi_file_validate_sync? An issue I see with this approach is there's no way to get back what the info value was using MPI_File_get_view. Howard -- Howard Pritchard Software Engineering Cray, Inc.

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