if the master receives multiple results from the same worker, how does the master know which result (and the associated tag) arrive first? what MPI commands are you using exactly?<br><br><div class="gmail_quote">On Mon, Jul 5, 2010 at 4:25 PM, Jack Bryan <span dir="ltr">&lt;<a href="mailto:dtustudy68@hotmail.com">dtustudy68@hotmail.com</a>&gt;</span> wrote:<br>

<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">



<div>
When the master sends out the task, it assign a distinct task number ID to <div>the task. </div><div><br></div><div>When the worker receive the task, it  still use the task&#39;s assigned ID as task tag to send it to master. </div>

<div><br></div><div>Any help is appreciated. </div><div><br></div><div>July 5 2010<br><div><br></div><div><br><br><hr>From: <a href="mailto:solarbikedz@gmail.com" target="_blank">solarbikedz@gmail.com</a><br>Date: Mon, 5 Jul 2010 13:17:27 -0700<br>

To: <a href="mailto:users@open-mpi.org" target="_blank">users@open-mpi.org</a><br>Subject: Re: [OMPI users] Open MPI, cannot get the results from workers<div class="im"><br><br>how does the master receive results from the workers? if a worker is sending multiple task results, how does the master knows what the message tags are ahead of time?<br>

<br><div>On Sun, Jul 4, 2010 at 10:26 AM, Jack Bryan <span dir="ltr">&lt;<a href="mailto:dtustudy68@hotmail.com" target="_blank">dtustudy68@hotmail.com</a>&gt;</span> wrote:<br>

<blockquote style="padding-left:1ex">



<div>
<div>Dear All : </div><div><br></div><div>I designed a master-worker framework, in which the master can schedule</div><div>multiple tasks (numTaskPerWorkerNode) to each worker and then collects results from workers.</div>



<div><br></div><div>if the numTaskPerWorkerNode = 1, it works well. </div><div><br></div><div>But, if numTaskPerWorkerNode &gt; 1, the master cannot get the results from workers. </div><div><br></div><div>But, the workers can get the tasks from master. </div>



<div><br></div><div>why ?</div><div><br></div><div><br></div><div>I have used different taskTag to distinguish the tasks, but still does not work.</div><div><br></div><div>Any help is appreciated. </div><div><br></div><div>



Thanks, </div><div><br></div><div>Jack </div><div><br></div><div>July 4  2010</div> 		 	   		  <br><div><hr>The New Busy is not the too busy. Combine all your e-mail accounts with Hotmail. <a href="http://www.windowslive.com/campaign/thenewbusy?tile=multiaccount&amp;ocid=PID28326::T:WLMTAGL:ON:WL:en-US:WM_HMP:042010_4" target="_blank">Get busy.</a></div>



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