[mpiwg-rma] Zero byte RMA operations
wgropp at illinois.edu
Wed Mar 30 11:09:47 CDT 2016
I agree with Rajeev - this should be allowed.
Director, Parallel Computing Institute
Thomas M. Siebel Chair in Computer Science
Chief Scientist, NCSA
University of Illinois Urbana-Champaign
On Mar 30, 2016, at 11:05 AM, Thakur, Rajeev <thakur at mcs.anl.gov> wrote:
> I would say it is allowed. I am not aware of any language disallowing it.
>> On Mar 30, 2016, at 10:58 AM, Balaji, Pavan <balaji at anl.gov> wrote:
>> Is it allowed for one to do a zero-byte RMA operation on a window of size 0? I couldn't find any wording in the standard that disallows this. If I missed something in the standard, I'd appreciate someone pointing out the page/line number specifying it.
>> The reason is that checking for this adds an extra branch on some networks, which we are trying to avoid.
>> -- Pavan
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