Yes, that was a typo.  mpi_finalize terminates all mpi processings.<br><br><div class="gmail_quote">On Tue, Feb 1, 2011 at 3:25 AM, Jeff Squyres (jsquyres) <span dir="ltr">&lt;<a href="mailto:jsquyres@cisco.com">jsquyres@cisco.com</a>&gt;</span> wrote:<br>

<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"><div bgcolor="#FFFFFF"><div>That&#39;s not quite right - a call to MPI-finalize does not terminate any processes. </div>

<div><br></div><div>If you&#39;re seeing this kind of instability, check the usual suspects such as ensuring you have a totally homogeneous environment (same OS, same version of OMPI, etc). <br><br>Sent from my PDA.<span> No type good. </span></div>

<div><div></div><div class="h5"><div><br>On Feb 1, 2011, at 4:03 AM, &quot;David Zhang&quot; &lt;<a href="mailto:solarbikedz@gmail.com" target="_blank">solarbikedz@gmail.com</a>&gt; wrote:<br><br></div><div></div><blockquote type="cite">

<div>According to the mpi_finalize documentation, a call to mpi_finalize terminate all processes.  I have ran into this problem before where one process calls mpi_finalize before other processes reach the same line of code and cause errors/hang ups.  Put a mpi_barrier(mpi_comm_world) before mpi_finalize would do the trick.<br>



<br><div class="gmail_quote">On Mon, Jan 31, 2011 at 11:40 PM, abc def <span dir="ltr">&lt;<a href="mailto:cannonjunk@hotmail.co.uk" target="_blank"></a><a href="mailto:cannonjunk@hotmail.co.uk" target="_blank">cannonjunk@hotmail.co.uk</a>&gt;</span> wrote:<br>

<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">





<div>
Hello,<br><br>I&#39;m having trouble with some MPI programming in Fortran, using openmpi.<br>It seems that my program doesn&#39;t work unless I print some unrelated text to the screen. For example, if I have this situation:<br>



<br>*** hundreds of lines cut ***<br>IF (irank .eq. 0) THEN<br>    CALL print_results1(variable)<br>    CALL print_results2(more_variable)<br>END IF<br>print *, &quot;done&quot;, irank<br>CALL MPI_FINALIZE(ierr)<br>END PROGRAM calculation<br>



<br>The results are not printed unless I include this &quot;print done irank&quot; penultimate line.<br>Also, despite seeing that all ranks reach the print statement, the program hangs, as if they have not all reached MPI_FINALIZE.<br>



<br>Can anyone help me? Why does it do this?<br><br>I also had many times where the program would crash if I didn&#39;t include a print statement in a loop. I&#39;ve been doing Fortran programming for a while, and this is my nightmare debugging scenario since I&#39;ve never been able to figure out why the simple printing of statements magically fixes the program, and I usually end up having to go back to a serial solution, which is really slow.<br>



<br>If anyone might be able to help me, I would be really really grateful!!<br><br>Thank you.<br><br>Tom<br><br> 		 	   		  </div>
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<a href="http://www.open-mpi.org/mailman/listinfo.cgi/users" target="_blank">http://www.open-mpi.org/mailman/listinfo.cgi/users</a><br></blockquote></div><br><br clear="all"><br>-- <br>David Zhang<br>University of California, San Diego<br>