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Status Future consideration
Workspace Spectrum LSF
Components Scheduling
Created by Guest
Created on May 25, 2022

job select statement improvement

I have hosts with exclusive resources and some with a dynamic resource. A few hosts have two exclusive resources.

The job submit:

$ bsub -R 'select[ defined(res1) || (defined(res2) && dynamic_pool==loaner_host)]'

I would expect this job to run on either hosts with res1 (resource) OR ( res2 and the loaner_host dynamic resource).

The scheduler is letting the job run on this host as if someone used (note no parens):

'select[defined(res1) || defined(res2) || dynamic_pool==loaner_host]'

$ grep specific_host lsf.cluster.<site>

specific_host model type 1 () () () (blah !res1 docker !res2)

$ lsload -o dynamic_pool specific_host



I should not have to use:

-R 'select[(defined(res1) && !defined(res2)) || (defined(res1) && dynamic_pool==loaner_host)]'

Needed By Month
  • Guest
    Jun 22, 2022

    We had some scenarios where this combination of resources was needed. The set of hosts was owned by one team, but they shared them with another using the dynamic_pool value. It became an obvious case showing the issues with the select statement logic.

    I'm pretty sure that there were other cases, but this was the easiest to replicate and describe.

  • Guest
    Jun 22, 2022

    why we need two exclusive resources ?