[torqueusers] spreading load over nodes
Rob.Holmes at bmtwbm.com.au
Tue Oct 2 00:32:20 MDT 2012
Yes I assumed from the lack of replies until now that there was no way to do it in pbs_sched. Sounds like it's time to bite the bullet and have a go at getting Maui up and running.
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From: torqueusers-bounces at supercluster.org [mailto:torqueusers-bounces at supercluster.org] On Behalf Of Christopher Samuel
Sent: Tuesday, 2 October 2012 04:11 PM
To: torqueusers at supercluster.org
Subject: Re: [torqueusers] spreading load over nodes
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On 13/09/12 08:57, Rob Holmes wrote:
> Hi all,
> 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.. :-)
Christopher Samuel Senior Systems Administrator
VLSCI - Victorian Life Sciences Computation Initiative
Email: samuel at unimelb.edu.au Phone: +61 (0)3 903 55545
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