[mpich-discuss] How expensive is MPI_Win_create() compared to memcpy()?

[Jed Brown]

On Tue, Dec 27, 2011 at 22:55, Pavan Balaji <balaji at mcs.anl.gov> wrote:

> I see.  In that case, the dynamically attaching memory to windows option
> in MPI-3 is what you need.  In this case, the window object is created
> collectively once, and then memory can be attached to it as a local
> operation without requiring collective synchronization.


Perfect, let me know when you are ready for someone to test an
implementation. I can make any of these variants into run-time options that
become available if the MPI provides the necessary functions, so it will be
an easy test environment.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mcs.anl.gov/pipermail/mpich-discuss/attachments/20111228/ea4ed0bf/attachment.htm>