April 2011 - mpi-forum - mailman3.cels.anl.gov

Re: [Mpi-forum] Next Meeting of the MPI Forum
by RICHARD GRAHAM 19 Apr '11

19 Apr '11

Tony, Will you be around on Tuesday AM ? I still need to re-arrange the schedule to accommodate your availability, so want to make sure I schedule thins appropriately. Thanks, Rich From: tony(a)cis.uab.edu Date: Tue, 19 Apr 2011 09:35:11 -0500 To: mpi-forum(a)lists.mpi-forum.org Subject: Re: [Mpi-forum] Next Meeting of the MPI Forum Me too, Monday pm and Tuesday pm Anthony Skjellum, PhD205-807-4968 On Apr 19, 2011, at 9:30 AM, "Underwood, Keith D" <keith.d.underwood(a)intel.com> wrote: I will be attending From: RICHARD GRAHAM [mailto:[email protected]] Sent: Tuesday, April 19, 2011 08:18 AM To: mpi-forum(a)lists.mpi-forum.org <mpi-forum(a)lists.mpi-forum.org> Subject: [Mpi-forum] Next Meeting of the MPI Forum Just to let people know that it will be a while before the registration site is available. If you plan to attend, please send a note to the main mailing list, just so we can get a head count. Also, a reminder that next Monday, 4/25 is the last day to reserve a room at the Residence Inn at the government rate. Thanks, 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

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Re: [Mpi-forum] Next Meeting of the MPI Forum
by Brice Goglin 19 Apr '11

19 Apr '11

I will be attending. Brice Le 19/04/2011 16:18, RICHARD GRAHAM a ï¿½crit : > Just to let people know that it will be a while before the > registration site is available. If you plan to attend, please send a > note to the main mailing list, just so we can get a head count. > > Also, a reminder that next Monday, 4/25 is the last day to reserve a > room at the Residence Inn at the government rate. > > Thanks, > Rich > > > _______________________________________________ > mpi-forum mailing list > mpi-forum(a)lists.mpi-forum.org > http://lists.mpi-forum.org/mailman/listinfo.cgi/mpi-forum >

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Re: [Mpi-forum] Next Meeting of the MPI Forum
by Anthony Skjellum 19 Apr '11

19 Apr '11

Me too, Monday pm and Tuesday pm Anthony Skjellum, PhD 205-807-4968 On Apr 19, 2011, at 9:30 AM, "Underwood, Keith D" <keith.d.underwood(a)intel.com> wrote: > I will be attending > > > From: RICHARD GRAHAM [mailto:[email protected]] > Sent: Tuesday, April 19, 2011 08:18 AM > To: mpi-forum(a)lists.mpi-forum.org <mpi-forum(a)lists.mpi-forum.org> > Subject: [Mpi-forum] Next Meeting of the MPI Forum > > Just to let people know that it will be a while before the registration site is available. If you plan to attend, please send a note to the main mailing list, just so we can get a head count. > > Also, a reminder that next Monday, 4/25 is the last day to reserve a room at the Residence Inn at the government rate. > > Thanks, > Rich > _______________________________________________ > mpi-forum mailing list > mpi-forum(a)lists.mpi-forum.org > http://lists.mpi-forum.org/mailman/listinfo.cgi/mpi-forum

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Re: [Mpi-forum] Next Meeting of the MPI Forum
by Rolf Rabenseifner 19 Apr '11

19 Apr '11

I'll come to the next meeting May 9-11, 2011 at San Jose and I already booked the hotel. And I hope that I can get a ride back from the meeting to SFO airport on Wednesday noon for my flight 2:20pm with checkin closing 1:20pm. although our meeting is until 3:15 (I had already booked my flight several month ago.) Best regards Rolf ----- Original Message ----- > From: "RICHARD GRAHAM" <rlgraham32(a)msn.com> > To: mpi-forum(a)lists.mpi-forum.org > Sent: Tuesday, April 19, 2011 4:18:12 PM > Subject: [Mpi-forum] Next Meeting of the MPI Forum > Just to let people know that it will be a while before the > registration site is available. If you plan to attend, please send a > note to the main mailing list, just so we can get a head count. > > Also, a reminder that next Monday, 4/25 is the last day to reserve a > room at the Residence Inn at the government rate. > > Thanks, > Rich > > _______________________________________________ > mpi-forum mailing list > mpi-forum(a)lists.mpi-forum.org > http://lists.mpi-forum.org/mailman/listinfo.cgi/mpi-forum -- Dr. Rolf Rabenseifner . . . . . . . . . .. email rabenseifner(a)hlrs.de High Performance Computing Center (HLRS) . phone ++49(0)711/685-65530 University of Stuttgart . . . . . . . . .. fax ++49(0)711 / 685-65832 Head of Dpmt Parallel Computing . . . www.hlrs.de/people/rabenseifner Nobelstr. 19, D-70550 Stuttgart, Germany . (Office: Allmandring 30)

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Re: [Mpi-forum] Next Meeting of the MPI Forum
by Underwood, Keith D 19 Apr '11

19 Apr '11

I will be attending From: RICHARD GRAHAM [mailto:[email protected]] Sent: Tuesday, April 19, 2011 08:18 AM To: mpi-forum(a)lists.mpi-forum.org <mpi-forum(a)lists.mpi-forum.org> Subject: [Mpi-forum] Next Meeting of the MPI Forum Just to let people know that it will be a while before the registration site is available. If you plan to attend, please send a note to the main mailing list, just so we can get a head count. Also, a reminder that next Monday, 4/25 is the last day to reserve a room at the Residence Inn at the government rate. Thanks, Rich

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Re: [Mpi-forum] Next Meeting of the MPI Forum
by Jeff Squyres 19 Apr '11

19 Apr '11

I'll be attending. On Apr 19, 2011, at 10:18 AM, RICHARD GRAHAM wrote: > Just to let people know that it will be a while before the registration site is available. If you plan to attend, please send a note to the main mailing list, just so we can get a head count. > > Also, a reminder that next Monday, 4/25 is the last day to reserve a room at the Residence Inn at the government rate. > > Thanks, > Rich > _______________________________________________ > mpi-forum mailing list > mpi-forum(a)lists.mpi-forum.org > http://lists.mpi-forum.org/mailman/listinfo.cgi/mpi-forum -- Jeff Squyres jsquyres(a)cisco.com For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/

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Next Meeting of the MPI Forum
by RICHARD GRAHAM 19 Apr '11

19 Apr '11

Just to let people know that it will be a while before the registration site is available. If you plan to attend, please send a note to the main mailing list, just so we can get a head count. Also, a reminder that next Monday, 4/25 is the last day to reserve a room at the Residence Inn at the government rate. Thanks, Rich

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#265 MPI_Count: formal reading PDF
by Jeff Squyres 15 Apr '11

15 Apr '11

We made the minor changes that were requested at the Chicago meeting and have uploaded a new PDF (the coloring has been fixed) to be used for a formal first reading at the next meeting: https://svn.mpi-forum.org/trac/mpi-forum-web/attachment/ticket/265/ or http://www.open-mpi.org/~jsquyres/one-count-to-rule-them-all/ for the compressed-challenged. -- Jeff Squyres jsquyres(a)cisco.com For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/

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Re: [Mpi-forum] First reading: Remove NBC C++ bindings
by Jeff Squyres 14 Apr '11

14 Apr '11

On Apr 14, 2011, at 3:19 PM, Jeff Hammond wrote: > Someone (you?) has argued in the past that deprecation doesn't not > mean they won't be supported, but as is clearly true from the NBC > ticket, it means that C++ bindings won't exist for features new in > MPI-3, which makes it impossible for a C++ person to use the MPI API > coherently. We're drifting off-topic here. a) My ticket is only about fixing the Forum's inconsistency with regards to C++ bindings for MPI-3 functions. As I previously mentioned, it's only due to a quirk of timing that NBC passed with C++ bindings. b) The C++ bindings are already deprecated. If someone wants to un-deprecate them, that's fine. But that's a separate issue. My ticket is solely about resolving the inconstancy in the Forum's current decision about the MPI-3 C++ bindings. > The state of > limbo you propose will just make the MPI Forum look stupid: ... The salient missing point here is that the C++ bindings *are* deprecated. It's a done deal. Over a year ago. I'm not proposing anything new here. Indeed, there are other MPI-3 functions that have been (or are about to be) added that have no corresponding C++ bindings. NBC is actually inconsistent with these other new MPI-3 functions. -- Jeff Squyres jsquyres(a)cisco.com For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/

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Re: [Mpi-forum] First reading: Remove NBC C++ bindings
by Jeff Hammond 14 Apr '11

14 Apr '11

Someone (you?) has argued in the past that deprecation doesn't not mean they won't be supported, but as is clearly true from the NBC ticket, it means that C++ bindings won't exist for features new in MPI-3, which makes it impossible for a C++ person to use the MPI API coherently. Who is going to use C++ bindings for blocking collectives and C bindings for non-blocking collectives? Because the MPI API will no longer be consistent if only some of the functions have C++ bindings defined, the Forum should either vote to kill C++ bindings altogether or restore them in MPI-3. The state of limbo you propose will just make the MPI Forum look stupid: "hey everybody, we couldn't make up our mind so you can use real C++ bindings for these 473 functions but for the other 128, you should use Boost.MPI, our C bindings or some code you found online that was written by a Mountain Dew-addicted undergrad." Jeff On Thu, Apr 14, 2011 at 8:15 AM, Jeff Squyres <jsquyres(a)cisco.com> wrote: > On Apr 14, 2011, at 8:54 AM, Jeff Hammond wrote: > >> I thought the Forum decided to un-deprecate the C++ bindings, or at >> least had a straw vote expressing intent to do this. ï¿½If that is the >> case, C++ bindings should be defined for all 3.0 functionality. > > I'm unaware of any such decision being made. > > And to clarify: the new ticket is to make the NBC stuff consistent with everything else that is happening in MPI-3.0 (i.e., no new C++ bindings). ï¿½It's only due to a quirk of timing that the MPI-3.0 NBC text was accepted with new functions that included C++ bindings. > >> I come to less than half the Forum meetings, so can someone point me >> to the content that explains when and how the tide turned back towards >> MPI not treating C++ as a first-class programming language? > > Your statement isn't quite fair -- MPI does nothing to disqualify C++ applications. ï¿½You can (obviously) use the C bindings in a C++ application. > > And also to be specific: the C++ bindings are not being withdrawn; they are deprecated, meaning that they *might* be removed someday (not by me, and I don't know anyone who is willing to undertake the effort -- it would be a LOT of text to edit). ï¿½And no new C++ bindings will be introduced. > > See https://svn.mpi-forum.org/trac/mpi-forum-web/ticket/150 for some details about the 2.2 deprecation of the C++ bindings. ï¿½The general feelings were: > > - the C++ bindings have caused *considerable* maintenance over the years (including several ill-informed / incorrect errata email votes in the late '90s) > - the C++ bindings provide very little semantic difference over the C bindings > - plans for the C++ bindings to be building blocks for more expressive C++ class libraries essentially failed (e.g., Boost.MPI uses the C bindings) > - more expressive C++ MPI class library functionality is both out of scope of the MPI specification and is available elsewhere > > -- > Jeff Squyres > jsquyres(a)cisco.com > For corporate legal information go to: > http://www.cisco.com/web/about/doing_business/legal/cri/ > > > _______________________________________________ > mpi-forum mailing list > mpi-forum(a)lists.mpi-forum.org > http://lists.mpi-forum.org/mailman/listinfo.cgi/mpi-forum > -- Jeff Hammond Argonne Leadership Computing Facility jhammond(a)alcf.anl.gov / (630) 252-5381 http://www.linkedin.com/in/jeffhammond

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