[Mauiusers] Re: How to configure some limits

[Steve Traylen]

On Mar 12, 2008, at 9:44 PM, Rob Lines wrote:

> I apologize for anyone that sees this twice. I somehow missed that  
> there is a separate list for maui from the torque list.
>
> Hi everyone.  We are new to Torque/Maui and we are still getting a  
> feel for it.  We would like to put into place some limits so that  
> the cluster is more fairly shared.
>
> For us on our old clusters we had a limit that no one person could  
> have more than 90% of the job slots used.  This allowed us to have  
> people submit thousands of jobs in a batch and let them go but still  
> left a number of slots for other people to run jobs.
>
> With going to Torque/Maui we are looking to do something similar  
> though as we have more nodes it would be nice to be able to adjust  
> that a bit so that if there was only one person running jobs at that  
> moment it would allow them to use all the slots but the moment  
> anyone else were to submit a job it would become the next one to be  
> run even if the first person had many more jobs waiting and that had  
> been waiting longer.
>

Have a look at the soft/hard limits here.

http://www.clusterresources.com/products/maui/docs/6.2throttlingpolicies.shtml

For a say 100 job cluster.

USERCFG[DEFAULT]   MAXJOB=90,110

should do something similar to what to you want.

  Steve

> I have tried to read through the options and I am just not sure what  
> I am looking for so if someone can point me to the options that  
> would work best that would be great.
>
> We are also are looking at some quirks because some of the software  
> on the cluster is not run via the queuing system so we sometimes  
> have machines that will reach a load where maui will not schedual  
> things to those nodes so we would not want to have 10% of the nodes  
> in that state and then the other 90% still being monopolized by that  
> first big user thus locking out the later queue user until either  
> the big user were done or the other software user were done.
>
> Thanks for any insights,
> Rob _______________________________________________
> mauiusers mailing list
> mauiusers at supercluster.org
> http://www.supercluster.org/mailman/listinfo/mauiusers

-- 
Steve Traylen
steve.traylen at cern.ch




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