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Administering Platform LSF - SAS

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Queue-Level User-based Fairshare<br />

Queue-Level User-based Fairshare<br />

About queue-level fairshare<br />

Fairshare policy configured at the queue level handles resource contention<br />

among users in the same queue. You can define a different fairshare policy for<br />

every queue, even if they share the same hosts. A user’s priority is calculated<br />

separately for each queue.<br />

To submit jobs to a fairshare queue, users must be allowed to use the queue<br />

(USERS in lsb.queues) and must have a share assignment (FAIRSHARE in<br />

lsb.queues). Even cluster and queue administrators cannot submit jobs to a<br />

fairshare queue if they do not have a share assignment.<br />

Viewing queue-level fairshare information<br />

To find out if a queue is a fairshare queue, run bqueues -l. If you see<br />

“USER_SHARES” in the output, then a fairshare policy is configured for the<br />

queue.<br />

Configuring queue-level fairshare<br />

Syntax<br />

To configure a fairshare queue, define FAIRSHARE in lsb.queues and specify<br />

a share assignment for all users of the queue.<br />

FAIRSHARE = USER_SHARES[[user, number_shares]...]<br />

◆<br />

◆<br />

◆<br />

You must specify at least one user share assignment.<br />

Enclose the list in square brackets, as shown.<br />

Enclose each user share assignment in square brackets, as shown.<br />

210<br />

<strong>Administering</strong> <strong>Platform</strong> <strong>LSF</strong>

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