[slurm-users] Is it possible to select the BatchHost for a job through some sort of prolog script?

[Loris Bennett]

Hi Tim,

Tim Lin <timtylin at gmail.com> writes:

> As the title suggests, I’m searching for a way to have tighter control of which
> node the batch script gets executed on. In my case it’s very hard to know which
> node is best for this until after all the nodes are allocate, right before the
> batch job starts . I’ve looked through all the documentation I can get my hands
> on but I haven’t found any mention of any control over the batch host for
> admins. Am I missing something?

As the documentation of 'sbatch' says:

  "When the job allocation is finally granted for the batch script,
  Slurm runs a single copy of the batch script on the first node in the
  set of allocated nodes. "
  
I am not aware of any way of changing this.

Perhaps you can explain why you feel it is necessary for you do this.

-- 
Dr. Loris Bennett (Mr.)
ZEDAT, Freie Universität Berlin         Email loris.bennett at fu-berlin.de