[mpiwg-p2p] Next meeting: 5th January 2015 11am Central US

Jim Dinan james.dinan at gmail.com
Mon Jan 12 09:39:27 CST 2015

Hi All,

Apologies for missing the meeting.  There was a lot of discussion at the
Forum about the validity of restricting the application's behavior using
info keys (or, if you prefer, the application asserting its behavior
through info keys).  Folks indicated that this qualifies as a semantic
change for the given communicator, which is forbidden by Section 6.4.4 and
made more complicated because MPI_Comm_dup propagates info keys.

In response to this feedback, I started working on a straw man communicator
assertions interface that would allow the application to assert what its
behavior will be.  I will prepare this for discussion at a future WG

In parallel, I have had discussions with others who feel that the opinion
expressed at the Forum meeting is incorrect; that it should be valid to
provide hints on application behavior through info keys.

At the same time, the straw vote at the December meeting indicated that the
Forum as a whole would like to pursue this capability for the MPI
standard.  So, much more discussion and debate is needed.  Looking forward
to it,


On Mon, Jan 5, 2015 at 6:43 AM, Daniel Holmes <dholmes at epcc.ed.ac.uk> wrote:

> Hi All,
> The next point-to-point teleconference will be - today, in about 5 hours -
> on Monday 5th January 2015 at 11am Central US via webex.
> Connection details are on the point-to-point wiki page:
> https://svn.mpi-forum.org/trac/mpi-forum-web/wiki/PtpWikiPage
> Agenda:
> 1) Review of December Forum meeting
> 2) Changes to the Point to Point chapter for MPI 3.1
> 3) Streams - possible overlap with newly re-formed Persistence WG
> 4) New INFO keys - specifically the one to enable adaptive routing
> 5) Arecv and Fsend
> 6) Other stuff?
> Cheers,
> Dan.
> --
> Dan Holmes
> Applications Consultant in HPC Research
> EPCC, The University of Edinburgh
> James Clerk Maxwell Building
> The Kings Buildings
> Peter Guthrie Tait Road
> Edinburgh
> EH9 3FD
> T: +44(0)131 651 3465
> E: dholmes at epcc.ed.ac.uk
> *Please consider the environment before printing this email.*
> The University of Edinburgh is a charitable body, registered in
> Scotland, with registration number SC005336.
> _______________________________________________
> mpiwg-p2p mailing list
> mpiwg-p2p at lists.mpi-forum.org
> http://lists.mpi-forum.org/mailman/listinfo.cgi/mpiwg-p2p
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mpi-forum.org/pipermail/mpiwg-p2p/attachments/20150112/250ce493/attachment-0001.html>

More information about the mpiwg-p2p mailing list