[GE users] User-Fairshare-Policy

Graham Jenkins Graham.Jenkins at its.monash.edu.au
Fri Sep 7 06:08:28 BST 2007

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In an attempt to curb the enthusiasm of those users who have been running several long-running
MPI jobs on multiple-nodes (thereby tying up the entire cluster), we've implemented a
"fair-share" policy thus:

1. Make 2 changes in the main SGE configuration ('qconf -mconf'):
       * enforce_user auto
       * auto_user_fshare 100

2. Make 1 change in the SGE scheduler configuration ('qconf -msconf'):
       * weight_tickets_functional 10000

And I'm wondering:

a) What's the significance of the '100' and '10000' values above?

b) Does the policy take into account a user's recent resource-usage history?

c) If so, how far back does it go?  and

d) Does it use the 'accounting' file for this? and

e) What happens when the 'accounting' file gets rolled and compressed?

f) How can we tell if it's all working?

Regards ..
Graham Jenkins
Senior Software Specialist, E-Research

Email: Graham.Jenkins at its.monash.edu.au
Tel:   +613 9905-5942
Mob:   +614 4850-2491

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