Yes, that is correct.

Quoting Bjørn-Helge Mevik <[email protected]>:

>
> (We're running slurm 2.5.7.)
>
> We have set up the topology plugin on our cluster.  I have a question
> about the semantics of the --switches option and max_switch_wait
> setting.
>
> My interpretation is that
>
> - Slurm will first try to place a job on 1 switch, if that can be done
>   without delaying the job start.  If not, it will place it on more than
>   one switch.
>
> - If a job specifies --switches=num@delay, slurm will not place the job
>   on more than "num" switches, unless that would delay the job more than
>   "delay".
>
> - The max_switch_wait setting is the maximum value a job can specify for
>   "delay".  So in order for allowing users to specify a delay of, say,
>   12 hours, one must set max_switch_wait in slurm.conf to something as
>   large as 12 hours.
>
> Is this the right interpretation?
>
> --
> Regards,
> Bjørn-Helge Mevik, dr. scient,
> Department for Research Computing, University of Oslo

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