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

[Jim Dinan]

You can already query this in MPI-2 using MPI_Win_get_attr(win,
MPI_WIN_DISP_UNIT, &disp_unit, &flag).

 ~Jim.

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.
> 
> Rajeev
> 
> 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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