[Mpi3-rma] [EXTERNAL] Re: Disp_unit in allocate_shared should be returned by win_shared_query?

Rajeev Thakur thakur at mcs.anl.gov
Tue Jul 24 22:12:54 CDT 2012

Even the Win_query_shared function returns a process's own disp_unit, which would need to be communicated to other processes.


On Jul 24, 2012, at 7:32 PM, William Gropp wrote:

> This does require some two-sided communication, which seems unfortunate for a one-sided interface.
> Bill
> William Gropp
> Director, Parallel Computing Institute
> Deputy Director for Research
> Institute for Advanced Computing Applications and Technologies
> Paul and Cynthia Saylor Professor of Computer Science
> University of Illinois Urbana-Champaign
> On Jul 24, 2012, at 2:10 PM, Dave Goodell wrote:
>> I think Jim's point (correct me if I'm wrong, Jim) is that there is a third option, which is to allow processes to query their own disp_unit with the MPI_WIN_DISP_UNIT attr and then communicate that information manually.
>> -Dave
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