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<p class="MsoNormal">Hi,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I have a master-worker program where both the master and the worker use 3 MPI_Requests in a loop. 2 of them are used in MPI_Send_Init and MPI_Recv_Init and the other one is used for MPI_Isend. There is a loop in a separate thread that
keeps calling MPI_Start for the MPI_Request used for MPI_Recv_Init and MPI_Waitsome for the incoming messages.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">At the end of my code, I believed that I have already cleaned up my MPI_Request properly by using the following:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"> if (SendRequest != MPI_REQUEST_NULL)<o:p></o:p></p>
<p class="MsoNormal"> {<o:p></o:p></p>
<p class="MsoNormal"> MPI_Cancel (&SendRequest);<o:p></o:p></p>
<p class="MsoNormal"> }<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"> if (SendHeaderRequest != MPI_REQUEST_NULL) //This one is used for MPI_Send_Init<o:p></o:p></p>
<p class="MsoNormal"> {<o:p></o:p></p>
<p class="MsoNormal"> MPI_Request_free (&SendHeaderRequest);<o:p></o:p></p>
<p class="MsoNormal"> }<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"> if (ReceiveHeaderRequest != MPI_REQUEST_NULL) //This one is used for MPI_Recv_Init<o:p></o:p></p>
<p class="MsoNormal"> {<o:p></o:p></p>
<p class="MsoNormal"> MPI_Request_free (&ReceiveHeaderRequest);<o:p></o:p></p>
<p class="MsoNormal"> }<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I have output to show that these functions are already called and succeeded.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">After this code, I call MPI_Comm_disconnect, so that I can call MPI_Finalize exit the worker process without exiting the master.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">However, it’s stuck in the MPI_Comm_disconnect call. Are there functions that allow me to check what are the outstanding operations on the MPI_Comm?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="color:#1F497D;mso-fareast-language:EN-CA">Eric Hui<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D;mso-fareast-language:EN-CA">GGY AXIS<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;color:#1F497D;mso-fareast-language:EN-CA">416-2503448<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;color:#1F497D;mso-fareast-language:EN-CA">Eric.Hui@ggy.com</span><span style="font-size:9.0pt;color:#1F497D;mso-fareast-language:EN-CA"><o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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