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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>It is not different for active requests; I think it was a
mistake to define it the way it is. You can still use MPI_Request_free to free
requests that are allocated but not started; which is why I think we should
keep it, but change the semantic.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> mpi-22-bounces@lists.mpi-forum.org
[mailto:mpi-22-bounces@lists.mpi-forum.org] <b>On Behalf Of </b>Richard
Treumann<br>
<b>Sent:</b> Thursday, July 17, 2008 1:57 PM<br>
<b>To:</b> MPI 2.2<br>
<b>Subject:</b> Re: [Mpi-22] [Mpi-forum] MPI 2.2 proposal: resolving
MPI_Request_free issues<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p>How is this different from saying MPI_REQUEST_FREE was a mistake. The
behavior of an application that uses this call is undefined.<br>
<br>
Of course we could add MPI_NO_REQUEST_FREE as an MPI_Init time assertion and
say that any MPI implementation optimization that create the problems Erez
describes are only valid when the application has asserted MPI_NO_REQUEST_FREE.
<br>
<br>
<br>
Dick Treumann - MPI Team/TCEM <br>
IBM Systems & Technology Group<br>
Dept 0lva / MS P963 -- 2455 South Road -- Poughkeepsie, NY 12601<br>
Tele (845) 433-7846 Fax (845) 433-8363<br>
<br>
<br>
<tt><span style='font-size:10.0pt'>mpi-22-bounces@lists.mpi-forum.org wrote on
07/17/2008 03:40:55 PM:</span></tt><span style='font-size:10.0pt;font-family:
"Courier New"'><br>
<br>
<br>
<tt>> </tt><br>
<tt>> The text specifically would say that writing or freeing the buffer </tt><br>
<tt>> after calling MPI_Request_free is unsafe.</tt><br>
<tt>> </tt><br>
<tt>> Thanks,</tt><br>
<tt>> .Erez</tt><br>
<tt>> </tt></span><o:p></o:p></p>
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