[Mpi-forum] MPI_WAIT/MPI_TEST and generalized, I/O, and NBC requests

[Bronis R. de Supinski]

I will leave it to you to decide. I am sure I
will be very pressed for time...

On Sat, 11 Feb 2012, Fab Tillier wrote:

> I think it would make more sense to fix the text for the WAIT and TEST routines, rather than spread the information around.  The generalized request section might not need changes if we do this.
>
> I don't know if I'll have time to put the text together before the meeting, though.
>
> -Fab
>
> Bronis R. de Supinski wrote on Sat, 11 Feb 2012 at 10:13:48
>
>>
>> I am fine with the decision to make it the chapter committee
>> responsibility. I suppose that means I need to draft text
>> for the generalized requests?
>>
>> On Sat, 11 Feb 2012, William Gropp wrote:
>>
>>> It looks like this is a result of adding new request types without revisiting
>>> the original text.  Under generalized requests, there is text that seems to
>>> imply that the request is set to MPI_REQUEST_NULL on completion, but it
>>> isn't explicit and should be.
>>>
>>> This is a chapter committee correction.
>>>
>>> Bill
>>>
>>> On Feb 10, 2012, at 6:04 PM, Fab Tillier wrote:
>>>
>>> Hi Folks,
>>>
>>> Looking at the text for MPI_WAIT (page 54, line 15) and MPI_TEST (page 55,
>>> line 7), it seems to imply that the request handle is only set to
>>> MPI_REQUEST_NULL for non-blocking send and receive requests.  Are
>>> generalized, I/O, and NBC requests not completed the same way?  Are users
>>> required to free such requests explicitly after they complete using
>>> MPI_REQUEST_FREE?
>>>
>>> I would have expected that all request handles except those to persistent
>>> requests are set to MPI_REQUEST_NULL, and persistent request just rather
>>> marked inactive.  If that is indeed the intent, shouldn't we update the text to
>>> reflect this?  Is this a ticket-0 level change?
>>>
>>> Thanks,
>>> -Fab
>>>
>>>
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>>>
>>> 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
>>>
>>>
>>>
>>>
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