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What is Fair-Share?

FairShare is a score that determines what priority you have in the scheduling queue for your jobs. The more jobs you run, the lower your score becomes, temporarily. A number of factors are used to determine this score -- please read this Fairshare document for more information.

To find out what your score is, enter `sshare -U` in your Odyssey terminal session to see a listing for your group (this is not your individual score, but an aggregate for your group). In general, a score of 0.5 or above means you have higher priority for scheduling.

Example of a fairly full Fairshare:

$ sshare -U
Account User RawShares NormShares RawUsage EffectvUsage FairShare
------------ ----- ------ -------- ------- ------------- ----------
jharvard2_lab jharv parent 0.000936 171281 0.000003 0.997620

Example of a depleted Fairshare:

$ sshare -U
Account User RawShares NormShares RawUsage EffectvUsage FairShare
------------ ----- ------ -------- ------- ------------- ----------
jharvard_lab johnh parent 0.000936 361920733 0.007145 0.005046

See also: Managing FairShare for Multiple Groups if you belong to more than one lab group

For further information, see the RC fair-share document. 

Posted in: c. Jobs and SLURM

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