Re: [mpiwg-p2p] [EXTERNAL] Re: [Mpi-forum] Point-to-point working group
Hi Jeff, Is there any particular reason you want the accumulate op to be specified on the Recv side, vs. the send side? I ask because in RMA we have the accumulate specified on the origin. Typically, most networks expose APIs for atomic ops on the origin side as well. i.e. why not Send_accumulate and Recv. Thanks, Sayantan
-----Original Message----- From: mpiwg-p2p [mailto:[email protected]] On Behalf Of Jeff Hammond Sent: Monday, February 03, 2014 8:09 AM To: MPI WG Point To Point Communications working group Subject: Re: [mpiwg-p2p] [EXTERNAL] Re: [Mpi-forum] Point-to-point working group
I attached everything I have in non-mental form for recv_reduce, which is not a huge amount. The first 23 lines of the C file attached are most useful of what I've attached.
Dave and Jim have already pointed out that my use of generalized requests is wrong w.r.t. MPI and instead requires the MPICH extension. That shouldn't really matter since I am providing the implementation on top of MPICH only as a reference point for implementers to evaluate the feasibility.
When I mention the optimized implementation over PAMI, it might be useful to reference https://bgq1.epfl.ch/navigator/resources/doc/pami/pami_8h_source.html, particularly functions associated with pami_data_function. I don't have a full implementation over PAMI but I can describe the performance of one-sided streaming accumulate, which is how I will implement this if necessary.
Best,
Jeff
On Mon, Jan 20, 2014 at 9:25 AM, Barrett, Brian W <[email protected]> wrote:
Jeff -
Thanks for the reminder. We had a meeting two weeks ago, the notes are on the web page:
https://svn.mpi-forum.org/trac/mpi-forum-web/wiki/PtpWikiPage
There's another meeting at 11:00am Central today. Someone scheduled a meeting I can't reschedule for 10:30 - 11:00 this morning, so I'm going to be 5 minutes late. Call in information is on the Wiki page.
Brian
On 1/18/14 9:36 AM, "Jeff Hammond" <[email protected]> wrote:
What's going on with this?
Jeff
On Wed, Dec 11, 2013 at 1:27 PM, Barrett, Brian W <[email protected]> wrote:
Hi all -
At the Forum today, progress was made at re-instituting the point-to-point working group. We'll initially be focusing on the point-to-point reduce and the unknown message size receive problem. If you're interested in joining in, please join the mailing list:
http://lists.mpi-forum.org/mailman/listinfo.cgi/mpiwg-p2p
There's also a bi-weekly telecon, which will be every other Monday from 12:00 - 1:00pm EST, starting Jan 6th. Call-in details are below.
Brian
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-- Jeff Hammond [email protected] _______________________________________________ mpiwg-p2p mailing list [email protected] http://lists.mpi-forum.org/mailman/listinfo.cgi/mpiwg-p2p
-- Brian W. Barrett Scalable System Software Group Sandia National Laboratories
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-- Jeff Hammond [email protected]
participants (1)
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Sur, Sayantan