We have a situation where Slurm is cancelling jobs due to the error "job 
dependency can't be satisfied".     However, all of the job dependencies are 
completing successfully.   Sacct shows that they are successful and scontrol 
shows they all have exit codes of 0.

Subsequently, once we have determined that the dependencies were successful we 
requeued the cancelled job.  Again it was cancelled:
JobState=CANCELLED Reason=Dependency Dependency=afterok:7438267_*

This seems to be a random event because we have submitted jobs of this type 
often and only some of them get cancelled.  Shortly after this happened today I 
tried to recreate the problem by submitting a job array and then submitting a 
second job that was dependent on the job array.   The dependent job was 
successful.

Has anyone seen this behavior before or can anyone shed light on this?

We are using Slurm 18.08.4.

Thanks in advance!
-Roger


[cid:image001.png@01D22319.C7D5D540]
Roger Moye
HPC Engineer
713.425.6236 Office
713.898.0021 Mobile

QUANTLAB Financial, LLC
3 Greenway Plaza
Suite 200
Houston, Texas 77046
www.quantlab.com<https://www.quantlab.com/>

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