[torqueusers] oversubscribing

Ken Nielson knielson at adaptivecomputing.com
Mon Sep 13 11:53:43 MDT 2010


On 09/13/2010 10:21 AM, Will Nolan wrote:
> Apologies if this is actually addressed in the documentation somewhere and I missed it, but is there any setting in either Torque or Maui that lets you run more jobs on a node than the number of processors?
>
> We have encountered a case where we add N jobs to Maui, where N>  M (and M is the number of processors on a node), and only M jobs run at a time -- the others stay listed as idle until resources free up.  However, we know for our set of jobs that it is beneficial to oversubscribe due to the nature of the jobs.
>
> Thanks for any advice people can give.
>
> Regards,
> Will
>
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>    
You can get TORQUE to oversubscribe by setting the the number of 
processors for the node in the $TORQUE_HOME/server_priv/nodes file using 
the np=x option. Set x to the number of nodes you want TORQUE and Maui 
to think are available.

Ken


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