[ofiwg] proposal to add a new completion semantic

Kenneth Raffenetti raffenet at mcs.anl.gov
Thu Aug 2 18:47:43 PDT 2018

On 08/02/2018 05:57 PM, Hefty, Sean wrote:
>> MPI synchronous send does not guarantee data placement into the target
>> buffer. It only guarantees that the recv operation on the target side
>> has been posted and matched. The data can still come later.
> How about this change then?
>>> : Indicates that a completion should be generated only after the
>> operation
>>>     has been placed into the application specified buffer.
>                  ^^^^^^^^^^^^^^^
>                  matched with an

Looks good to me.

>> Operations using
>>>     this completion semantic are dependent on the application at the
>> target
>>>     claiming the message or results.  As a result, match complete may
>> involve
>>>     additional provider level acknowledgements or lengthy delays.
>> However, this
>>>     completion model enables peer applications to synchronize their
>> execution.

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