[Mauiusers] Standing reservations

Antonio Messina amessina at ictp.it
Mon Jul 11 23:31:53 MDT 2011


On 11/07/11 20.25, Michael Robbert wrote:

> We are running Maui 3.3.1 and Torque 2.5.3 on Centos 5.6 and are
> having problems getting standing reservations to work the way we
> want. We have a handful of groups of users that have purchased nodes
> in our cluster. They would like to be able to get access to the
> resources that they paid for without having to wait, but we would
> like the resources to get utilized when they aren't being used. I
> think that we should be able to accomplish this with standing
> reservations and preemption. I had the below configuration running
> last week and a user in group1 had a job in the queue that was going
> to have to wait over a day to run. At that time it looked to me like
> there were nodes reserved with the fluent reservation, but they were
> sitting idle and not allowing his job to run. Does anybody see
> anything wrong with the config file to not allow jobs to run in this
> reservation? How about the overall goal of standing reservations
> that allow all users in, but owners are allowed to preempt?

We have very similar needs and configuration, I have torque 2.5.5, 
maui 3.3.1 and centos 5.6.

My current configuration, however, is not using standing
reservation. The relevant parts are:

PREEMPTPOLICY SUSPEND
USERCFG[DEFAULT] MAXJOB=8,16 MAXPROC=128,256 MAXJOBQUEUED=8
QOSCFG[climahigh]	PRIORITY=100000	MAXPROC=64 MAXJOB=2 
QFLAGS=PREEMPTOR,RESTARTPREEMPT
QOSCFG[DEFAULT]	PRIORITY=0 QFLAGS=PREEMPTEE
CLASSCFG[short]   PRIORITY=20000
CLASSCFG[climahigh] PIORITY=50000 QDEF=climahigh QLIST=climahigh:DEFAULT

We use features on torque to differentiate between nodes whih 
belongs to the clima group and "general use" nodes.

I've not tested it extensively, but for now it seems to work.

.a.

-- 
Antonio Messina
I.T. Specialist

email: amessina at ictp.it      |  The Abdus Salam ICTP
phone: +39 040-2240-691      |  Strada Costiera, 11
fax:   +39 040-2240-7691     |  34151 Trieste, Italy

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