[Mauiusers] torque not fulling utilizing open processors

Michelangelo D'Agostino mdagost at berkeley.edu
Mon Jul 31 16:47:39 MDT 2006


Hey everyone.  I'm getting some weird behavior out of my torque/maui 
setup, and I thought I'd see if anyone out there can help.  Basically, 
torque isn't making full use of open resources when I submit large 
numbers of jobs via a script. 

Our cluster is pretty simple.  We have 10 processors, 2 each on three 
nodes (cold1, cold2, and cold3) and 4 on cold4.  My nodes file looks 
like this:

cold1:ts np=2
cold2:ts np=2
cold3:ts np=2
cold4:ts np=4

and maui.cfg looks like this:

QUEUETIMEWEIGHT       0
USERWEIGHT            0

BACKFILLPOLICY        FIRSTFIT
RESERVATIONPOLICY     NEVER

NODEALLOCATIONPOLICY PRIORITY
NODECFG[DEFAULT] PRIORITYF='CPROCS-JOBCOUNT'
USERCFG[DEFAULT] MAXPROC=10


Things are set up so that each of the 10 processors should get 1 job.  
When I submit 10 jobs, things get distributed as I want and would expect 
and all 10 jobs run.  But if I submit many jobs with a script, like 100, 
only 6 jobs at a time run no matter what.  What's going on?

Thanks in advance for any help you can provide...Oh, and I'm running  
maui-3.2.6p14  and torque-2.0.0p7...

Michelangelo


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