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sungridengine

SGE: Whats the difference between -hold_jid_ad and -hold_jid

When qsub-ing a job I want one job to wait to execute until the first one has succeeded. I've been looking at the options -hold_jid_ad and -hold_jid to do this, but can't see a difference in them.

Solution

  • Lets say you have jobs A and B, and A depends on B. That is you want to run something like qsub --hold_jid[_ad] B A.sh

    --hold_jid_ad

    This is for array jobs only. Use it if:

    • A and B are both array jobs,
    • A and B has the same range of tasts (i.e. not qsub -t 1-3 A.sh and qsub -t 2-4 B.sh),
    • A[i] depends on B[i], AND
    • A[i] does not depend on B[j] for i != j

    --hold_jid

    Use this is any other situation. When in doubt use this.

    This is based on a diff the documentation and a few tries on our engine.