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

[Bronis R. de Supinski]

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
>
>
>
>