[mpiwg-rma] MPI_WIN_CREATE for intercommunicators

Jim Dinan james.dinan at gmail.com
Tue Feb 11 10:57:35 CST 2014

Being on this list should be good.  If you create an account on the trac
page, you can also add yourself to the cc list for the ticket.  You're also
welcome to join meetings; right now we are focused on the March
face-to-face meeting deadlines so we won't be able to work in any new
business until after that.  Changing the standard is a long process, so
this could take a while, but staying involved to provide motivating use
cases would be very helpful.  :)

On Tue, Feb 11, 2014 at 11:53 AM, Thomas Jahns <jahns at dkrz.de> wrote:

> Hello Jim,
> On 02/11/14 16:59, Jim Dinan wrote:
> > This sounds like a reasonable proposal to me; it should be possible to
> create a
> > sane definition for windows on intercommunicators.  The RMA interface has
> > focused on intracommunicators, so it could require several additions to
> e.g.
> > make it possible to query both local and remote groups from the window.
>  I think
> > the main argument against adding this would be the increased complexity
> in the
> > standard and to implementations.  Given that there is a workaround
> (flattening
> > the communicator to make the window, and using post/start/complete/wait
> to
> > restrict the set of communication peers in active target), we would need
> to
> > motivate such a change.
> >
> > I captured your proposal in a ticket,
> > https://svn.mpi-forum.org/trac/mpi-forum-web/ticket/412, so we remember
> to
> > discuss this further in the RMA working group.
> thank you. Will remaining subscribed to this list be sufficient to receive
> notice of updates or should I poll above issue every few weeks?
> Regards, Thomas
> --
> Thomas Jahns
> DKRZ GmbH, Department: Application software
> Deutsches Klimarechenzentrum
> Bundesstraße 45a
> D-20146 Hamburg
> Phone: +49-40-460094-151
> Fax: +49-40-460094-270
> Email: Thomas Jahns <jahns at dkrz.de>
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