[Mauiusers] adjust priorities based on group usage

Greenseid, Joseph M (IS) Joseph.Greenseid at ngc.com
Fri Apr 23 08:26:57 MDT 2010

have you looked at setting fairshare targets for each group for this queue? 


From: mauiusers-bounces at supercluster.org on behalf of Steve Young
Sent: Thu 4/22/2010 3:49 PM
To: mauiusers at supercluster.org
Subject: [Mauiusers] adjust priorities based on group usage

        I'm trying to devise a solution with maui 3.3 in order to support a 
requirement to balance out resources by groups over a class (queue). 
We have a few different queue's bound to certain sets of resources. 
Our newest cluster (288 cores) is shared between 4 different groups. 
I'm trying to figure out how to have priority figured out so that this 
new cluster would give a higher priority to the groups that are using 
it the least. So for example, two groups are using the cluster... each 
group should be allowed to utilize 50% of the resources of this queue. 
As soon, as a third or fourth group starts using the resources they 
would end up being highest priority until the percentages balanced out 
to 33% or 25% (3 or 4 groups). My first thought is to try something 
like UPROCWEIGHT and set it to a negative number (-1) so that a 
person's priority should go down if they are using lots of processors 
already. However, this would seem to be a user based approach and 
wouldn't help in keeping the balance between groups. Perhaps, if there 
were a GPROCWEIGHT that would be what I am looking for.
        Also, as I mentioned before we have one central queue system with 
many queue's of different resources. In the previous paragraph I 
explained how we want to balance one of the clusters (queue) between 4 
groups. However, I don't want to come up with this scenario and have 
it apply to the whole grid. There are other queue's (clusters) that 
belong to only one group so I would only want that group to be able to 
utilize all of those resources without having it effect the balancing 
of the queue with the shared resources (of 4 groups).
        At any rate I hope I make some sense here ;-)... I'm looking for any 
suggestions on how I can accomplish something like this or how other 
places have implemented this. Thanks in advance for any advise!


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