Re: [Condor-users] Pool with some dynamic slots

[Lukas Slebodnik <slebodnik@xxxxxxxx>]

Try to use

Requirement = ("PartitionableSlot =?= true")
request_memory = 500

Default value of request_cpus is 1, therefore it is not necessarily to use.

Regards,
Lukas

On Thu, Nov 10, 2011 at 04:33:07PM +0100, Steffen Grunewald wrote:
> Good afternoon,
> 
> I have run into an issue which even the latest manual (7.6.4) cannot help
> to resolve.
> I'm running a pool, consisting of a number of nodes which for traditional
> reasons have been "hard-partitioned". Some of them offer a single slot,
> with 2500 MB of RAM, and some are split at ~40/60 ratio.
> Now I want to add another node which comes with 8 GB installed, and use
> dynamic provisioning.
> 
> Here's my submit file:
> 
> ---
> universe   = vanilla
> initialdir = /home/testuser/test
> notification = Never
> on_exit_remove = (ExitBySignal == False) || ((ExitBySignal == True) && (ExitSignal != 11))
> 
> executable = /bin/sleep
> arguments  =  1800
> 
> Requirements = (Memory >= 2600)
> 
> request_cpus = 1
> request_memory = 2650
> 
> queue 4
> ---
> 
> What confuses me is the semantics of the Requirements and request_memory
> lines.
> 
> To avoid the jobs being scheduled onto the old-style slots, I have to 
> define Requirements which rule out those.
> If I set request_memory = 500, the matchmaker will assign the proper slot,
> but the startd will hand back the job - resulting in a condor_q -better
> output of "job not yet considered by the matchmaker" (which isn't true),
> and the job starting never.
> If I raise the number to 2650, the job(s) will run (3 of them in parallel
> as only ~500 MB are left on the slot).
> If I remove the Requirements line, the job will be matched against an
> old-style slot which isn't large enough.
> 
> Where's my mistake?
> 
> Cheers,
>  Steffen
> 
> -- 
> Steffen Grunewald * MPI Grav.Phys.(AEI) * Am Mühlenberg 1, D-14476 Potsdam
> Cluster Admin * --------------------------------- * http://www.aei.mpg.de/
> * e-mail: steffen.grunewald(*)aei.mpg.de * +49-331-567-{fon:7274,fax:7298}
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