[slurm-users] Multiple job constraints

[Paul Edmon]

You will get whatever cores Slurm can find which will be an assortment 
of hosts.

-Paul Edmon-


On 6/20/2018 11:01 AM, Nathan Harper wrote:
> sorry to hijack, but we've been considering a similar configuration, 
> but I was wondering what happens if you don't set a processor type?  
>  Will it scatter across types?
>
> On Wed, 20 Jun 2018 at 15:30, Vicker, Darby (JSC-EG311) 
> <darby.vicker-1 at nasa.gov <mailto:darby.vicker-1 at nasa.gov>> wrote:
>
>     Yes, Boolean constraints do work with minimal configuration. We
>     run mostly MPI jobs on our cluster and want our jobs to run on a
>     single processor type. We assign the processor types as a feature
>     and then the sbatch requests —constraint=[wes|san|has|bro] to run
>     on whatever processor type is free. Works great.
>
>     On Jun 20, 2018, at 9:15 AM, Kevin Van Workum <vanw at sabalcore.com
>     <mailto:vanw at sabalcore.com>> wrote:
>
>>     Hello,
>>
>>     We currently use an in-house customized version of Torque and an
>>     in-house scheduler. I'm now considering Slurm instead. We have a
>>     feature in our scheduler where by users can submit jobs with
>>     multiple-prioritized job specifications (constraints). For
>>     example, a job can request 4 nodes of type X with 16 cores per
>>     node OR 2 nodes of type Y with 20 cores per node. The scheduler
>>     will prefer the first job spec but may use the second job spec if
>>     the first can not be satisfied within certain QoS limits.
>>
>>     I saw some ability to use boolean constraints in the docs for
>>     Slurm, but would like to know if this behavior is possible out of
>>     the box.
>>
>>     Thanks,
>>
>>     Kevin
>>
>>     -- 
>>     Kevin Van Workum, PhD
>>     Sabalcore Computing Inc.
>>     "Where Data Becomes Discovery"
>>     http://www.sabalcore.com
>>     877-492-8027 ext. 1011
>>
>
>
> -- 
> *NathanHarper* // IT Systems Lead
>
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