Best practices for job submission: Difference between revisions

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It is equally important that your estimate of the job duration be relatively accurate: asking for five days when the computation in reality finishes after just sixteen hours leads to your job spending much more time waiting to start than it would had you given a more accurate estimate of the duration. It's natural to leave a certain amount of room for error in the estimate and so to increase the duration by five or ten percent "just in case" but otherwise it's in your interest for your estimate of the job's duration to be as accurate as possible. You can see how long completed jobs took to run using the command  
It is equally important that your estimate of the job duration be relatively accurate: asking for five days when the computation in reality finishes after just sixteen hours leads to your job spending much more time waiting to start than it would had you given a more accurate estimate of the duration. It's natural to leave a certain amount of room for error in the estimate and so to increase the duration by five or ten percent "just in case" but otherwise it's in your interest for your estimate of the job's duration to be as accurate as possible. You can see how long completed jobs took to run using the command  
<source>
{{Command
[stubbsda@beluga1 ~]$ seff 1234567
|seff 1234567
|result=
Job ID: 1234567
Job ID: 1234567
Cluster: beluga
Cluster: beluga
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Memory Utilized: 14.95 GB (estimated maximum)
Memory Utilized: 14.95 GB (estimated maximum)
Memory Efficiency: 11.68% of 128.00 GB (8.00 GB/core)
Memory Efficiency: 11.68% of 128.00 GB (8.00 GB/core)
</source>
}}
 
in the field <i>Job Wall-clock time</i>.
in the field <i>Job Wall-clock time</i>.


Bureaucrats, cc_docs_admin, cc_staff
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