[torqueusers] spreading load over nodes

Christopher Samuel samuel at unimelb.edu.au
Tue Oct 2 00:10:40 MDT 2012


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On 13/09/12 08:57, Rob Holmes wrote:

> Hi all,

Hi Rob,

> We have a small cluster (running torque & pbs_sched) that is only 
> occasionally fully utilized.  Most of the time there are not enough
> jobs to fill all the nodes.
> 
> When a job is submitted it always goes to the first available node
> in the node list, resulting in ?node01? getting significantly more
> work than ?node14?.  I?m keen to spread the workload more evenly
> across each node.  Is there a way to get torque to pick a free node
> at random, rather than the first free node on the list?

I'd suggest looking at using Maui instead of pbs_sched. The one you're
using is a pretty simple one that (as you've seen) tends to just deal
with the nodes in order.  Maui is much more flexible.

The downside is that Maui is much more flexible.. :-)

Good luck!
Chris
- -- 
 Christopher Samuel        Senior Systems Administrator
 VLSCI - Victorian Life Sciences Computation Initiative
 Email: samuel at unimelb.edu.au Phone: +61 (0)3 903 55545
 http://www.vlsci.org.au/      http://twitter.com/vlsci

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