Yes, I believe this change would match the intent, and would work with, for example, the RMA requests that haven't been mentioned yet :) Bill On Feb 12, 2012, at 7:46 AM, Rolf Rabenseifner wrote:
When I understand correctly, then we have two problems:
1. MPI-2.2 has the "bug" that MPI-2.2 page 53 line 47 - page 54 line 3, and page 54 lines 40-45 do not mention the generalize requests although it was intended that MPI_Wait or MPI_Test of a generalized request acts as it would have been a isend or irecv request.
2. Nobody has checked for nonblocking collectives and nonblocking I/O that this text must now also include those routines.
When I also understand correctly, then we currently say
"If the communication object associated with this request was created by a nonblocking send or receive all, then ..."
but we wanted to say
"If the communication object associated with this request is not a persistent communication request (see Section 3.9 on page 69), then ..."
Yes?
This change would solve both problems. Yes?
Best regards Rolf
----- Original Message -----
From: "Bronis R. de Supinski" <[email protected]> To: "Fab Tillier" <[email protected]> Cc: "Main MPI Forum mailing list" <[email protected]> Sent: Saturday, February 11, 2012 7:57:30 PM Subject: Re: [Mpi-forum] MPI_WAIT/MPI_TEST and generalized, I/O, and NBC requests 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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-- Dr. Rolf Rabenseifner . . . . . . . . . .. email [email protected] High Performance Computing Center (HLRS) . phone ++49(0)711/685-65530 University of Stuttgart . . . . . . . . .. fax ++49(0)711 / 685-65832 Head of Dpmt Parallel Computing . . . www.hlrs.de/people/rabenseifner Nobelstr. 19, D-70550 Stuttgart, Germany . (Office: Allmandring 30) _______________________________________________ mpi-forum mailing list [email protected] http://lists.mpi-forum.org/mailman/listinfo.cgi/mpi-forum
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