Hi P2P Folk, In terms of an application that can benefit from streams/pipes between MPI processes, the CORAL MCB benchmark (https://asc.llnl.gov/CORAL-benchmarks/) 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. ~Jim. On Mon, Jan 20, 2014 at 10:25 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:

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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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-- Brian W. Barrett Scalable System Software Group Sandia National Laboratories

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