<div dir="ltr"><div>Hi P2P Folk,</div><div><br></div><div>In terms of an application that can benefit from streams/pipes between MPI processes, the CORAL MCB benchmark (<a href="https://asc.llnl.gov/CORAL-benchmarks/">https://asc.llnl.gov/CORAL-benchmarks/</a>) might be a good motivator. This is a stand-in for neutron transport codes where particles move through the domain and could have multiple domain partition crossings (move from one process to another) during a single timestep. Within a timestep, processes poll for incoming particles and send exiting particles to neighboring processes. The communication pattern is data dependent and AFAIK unpredictable. There is effectively a communication pipe between pairs of neighboring processes where the application wants to push/pop particles.</div>
<div><br></div><div> ~Jim.</div><div><br></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Mon, Jan 20, 2014 at 10:25 AM, Barrett, Brian W <span dir="ltr"><<a href="mailto:bwbarre@sandia.gov" target="_blank">bwbarre@sandia.gov</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Jeff -<br>
<br>
Thanks for the reminder. We had a meeting two weeks ago, the notes are on<br>
the web page:<br>
<br>
<a href="https://svn.mpi-forum.org/trac/mpi-forum-web/wiki/PtpWikiPage" target="_blank">https://svn.mpi-forum.org/trac/mpi-forum-web/wiki/PtpWikiPage</a><br>
<br>
There's another meeting at 11:00am Central today. Someone scheduled a<br>
meeting I can't reschedule for 10:30 - 11:00 this morning, so I'm going to<br>
be 5 minutes late. Call in information is on the Wiki page.<br>
<span class="HOEnZb"><font color="#888888"><br>
Brian<br>
</font></span><div class="HOEnZb"><div class="h5"><br>
On 1/18/14 9:36 AM, "Jeff Hammond" <<a href="mailto:jeff.science@gmail.com">jeff.science@gmail.com</a>> wrote:<br>
<br>
>What's going on with this?<br>
><br>
>Jeff<br>
><br>
>On Wed, Dec 11, 2013 at 1:27 PM, Barrett, Brian W <<a href="mailto:bwbarre@sandia.gov">bwbarre@sandia.gov</a>><br>
>wrote:<br>
>> Hi all -<br>
>><br>
>> At the Forum today, progress was made at re-instituting the<br>
>>point-to-point<br>
>> working group. We'll initially be focusing on the point-to-point reduce<br>
>> and the unknown message size receive problem. If you're interested in<br>
>> joining in, please join the mailing list:<br>
>><br>
>> <a href="http://lists.mpi-forum.org/mailman/listinfo.cgi/mpiwg-p2p" target="_blank">http://lists.mpi-forum.org/mailman/listinfo.cgi/mpiwg-p2p</a><br>
>><br>
>> There's also a bi-weekly telecon, which will be every other Monday from<br>
>> 12:00 - 1:00pm EST, starting Jan 6th. Call-in details are below.<br>
>><br>
>> Brian<br>
>><br>
>> --<br>
>> Brian W. Barrett<br>
>> Scalable System Software Group<br>
>> Sandia National Laboratories<br>
>><br>
>><br>
>> When: Occurs on Monday every other week from 12:00 PM to 1:00 PM<br>
>>effective<br>
>> 1/6/2014. (UTC-05:00) Eastern Time (US & Canada)<br>
>><br>
>> *~*~*~*~*~*~*~*~*~*<br>
>><br>
>> Topic: MPI Forum Pt2Pt working group<br>
>> Date: Every 2 weeks on Monday, from Monday, January 6, 2014 to no end<br>
>>date<br>
>> Time: 12:00 pm, Eastern Standard Time (New York, GMT-05:00)<br>
>> Meeting Number: 201 343 896<br>
>> Meeting Password: mpi<br>
>><br>
>><br>
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>> To join the online meeting (Now from mobile devices!)<br>
>> -------------------------------------------------------<br>
>> 1. Go to<br>
>><br>
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>>mI<br>
>> 2&RT=MiMxMQ%3D%3D<br>
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>><br>
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>>mI<br>
>> 2&ORT=MiMxMQ%3D%3D<br>
>><br>
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>><br>
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>> To join the teleconference only<br>
>> -------------------------------------------------------<br>
>> 1. Dial into Cisco WebEx (view all Global Access Numbers at<br>
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>> 2. Follow the prompts to enter the Meeting Number (listed above) or<br>
>>Access<br>
>> Code followed by the # sign.<br>
>><br>
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>><br>
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>><br>
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>><br>
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>>D=<br>
>><br>
>>2&ST=1&SHA2=AAAAAhxIwy1/IXx8-dERB8uy6s11lMFMrwAr0W8u-FzAGXdZ&RT=MiMxMQ%3D<br>
>>%3<br>
>> D<br>
>><br>
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>><br>
>><br>
>><br>
>><br>
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><br>
><br>
><br>
>--<br>
>Jeff Hammond<br>
><a href="mailto:jeff.science@gmail.com">jeff.science@gmail.com</a><br>
>_______________________________________________<br>
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><a href="mailto:mpiwg-p2p@lists.mpi-forum.org">mpiwg-p2p@lists.mpi-forum.org</a><br>
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<br>
<br>
--<br>
Brian W. Barrett<br>
Scalable System Software Group<br>
Sandia National Laboratories<br>
<br>
<br>
<br>
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