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<DIV><FONT face=Arial size=2><FONT color=#000000 face=Arial>My guess is that you
need to let mpi (or whatever you are using) know what nodes to run on. PBS
creates a file with a list of the nodes it has allocated - $PBS_NODEFILE.
But it is up to your application or environment to do something with this
file. You need to pass this to mpi. For mpich, you can edit mpirun.args
(in the bin directory) to look like:</FONT></FONT></DIV>
<DIV><FONT face=Arial size=2><FONT color=#000000
face=Arial></FONT></FONT> </DIV>
<DIV><FONT face=Arial size=2><FONT color=#000000 face=Arial>if [ "$PBS_NODEFILE"
!= "" ]<BR>then<BR>
machineFile=$PBS_NODEFILE<BR>fi<BR></FONT></FONT></DIV>
<DIV><FONT face=Arial size=2><FONT color=#000000
face=Arial></FONT></FONT> </DIV>
<DIV><FONT face=Arial size=2><FONT color=#000000 face=Arial>Hope this
helps.</FONT></FONT></DIV>
<DIV><FONT face=Arial size=2><FONT color=#000000
face=Arial></FONT></FONT> </DIV>
<DIV><FONT face=Arial size=2><FONT color=#000000
face=Arial>Jim</DIV></FONT></FONT>
<BLOCKQUOTE
style="BORDER-LEFT: #000000 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px; PADDING-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A href="mailto:jraheb@julian.uwo.ca" title=jraheb@julian.uwo.ca>Joey
Raheb</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A href="mailto:beowulf@beowulf.org"
title=beowulf@beowulf.org>beowulf@beowulf.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Wednesday, January 17, 2001 10:56
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> PBS</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>Hello everyone,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I tried a post on the PBS site and no one seems
to want to respond. I have set up an execution queue on our cluster
using PBS. However, I am having problems getting the jobs to distribute
themselves among the different nodes and different CPUS on the nodes. If
I send three jobs at the same time to the queue they all seem to end up on the
same node on the same CPU? Why is that and how do I change
that?</FONT></DIV>
<DIV><FONT face=Arial size=2><BR>Joey</FONT></DIV></BLOCKQUOTE></BODY></HTML>