[mpiwg-rma] Single RMA synchronization for several window handles

William Gropp wgropp at illinois.edu
Fri Aug 8 10:57:54 CDT 2014

If you are going to allow windows with different communicators, then you might as well use separate fence calls.  Otherwise, you are introducing a brand-new kind of object - one that involves the union of non-disjoint groups of processes.  I don’t think this is a good idea.


William Gropp
Director, Parallel Computing Institute
Thomas M. Siebel Chair in Computer Science
University of Illinois Urbana-Champaign

On Aug 8, 2014, at 10:50 AM, Rolf Rabenseifner <rabenseifner at hlrs.de> wrote:

> Dynamic Windows also require that all have the same communicator
> (because same win handle).

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