[mpiwg-rma] Zero byte RMA operations

Thakur, Rajeev thakur at mcs.anl.gov
Wed Mar 30 11:05:34 CDT 2016

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.
> Thanks,
>  -- Pavan
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