[Mpi3-rma] [EXTERNAL] Re: Disp_unit in allocate_shared should be returned by win_shared_query?
dinan at mcs.anl.gov
Tue Jul 24 23:03:13 CDT 2012
You can already query this in MPI-2 using MPI_Win_get_attr(win,
MPI_WIN_DISP_UNIT, &disp_unit, &flag).
On 07/24/2012 10:12 PM, Rajeev Thakur wrote:
> 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.
>> 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.
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