<p dir="ltr">Sorry I meant procs!</p>
<div class="gmail_quote">On 7 Feb 2013 16:39, "Andrew Dawson" <<a href="mailto:dawson@atm.ox.ac.uk">dawson@atm.ox.ac.uk</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<p dir="ltr">Glen, I was just mentioning price for completeness really. As far as I can tell setting nodes should work...</p>
<div class="gmail_quote">On 7 Feb 2013 16:27, "Glen Beane" <<a href="mailto:glen.beane@gmail.com" target="_blank">glen.beane@gmail.com</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
On Thu, Feb 7, 2013 at 4:10 AM, Andrew Dawson <<a href="mailto:dawson@atm.ox.ac.uk" target="_blank">dawson@atm.ox.ac.uk</a>> wrote:<br>
> Hi all,<br>
><br>
> I'm configuring a recent torque/maui installation and I'm having trouble<br>
> with submitting MPI jobs. I would like for MPI jobs to specify the number of<br>
> processors they require and have those come from any available physical<br>
> machine, the users shouldn't need to specify processors per node etc.<br>
><br>
> The torque manual says that the nodes option is mapped to virtual<br>
> processors, so for example:<br>
><br>
> #PBS -l nodes=8<br>
><br>
> should request 8 virtual processors. The problem I'm having is that our<br>
> cluster currently has only 5 physical machines (nodes), and setting nodes to<br>
> anything greater than 5 gives the error:<br>
><br>
> qsub: Job exceeds queue resource limits MSG=cannot locate feasible nodes<br>
> (nodes file is empty or all systems are busy)<br>
><br>
> I'm confused by this, we have 33 virtual processors available across the 5<br>
> nodes (4 8-core machines and one single core) so my interpretation of the<br>
> manual is that I should be able to request 8 nodes, since these should be<br>
> understood as virtual processors? Am I doing something wrong?<br>
><br>
> I tried setting<br>
><br>
> #PBS -l procs=8<br>
><br>
> but that doesn't seem to do anything, MPI stops due to having only 1 worker<br>
> available (single core allocated to the job).<br>
<br>
I don't think Maui correctly interprets procs. You would need Moab.<br>
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</blockquote></div>
</blockquote></div>