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Resource Usage Policy

Soft limits and hard limits are used to provide fair scheduling without wasting resources. The job scheduler will schedule all jobs meeting the soft limit requirements. If there are additional resources after all jobs meeting the soft limits are scheduled, then jobs meeting the hard limits are scheduled. The hard limits prevent users from monopolising the cluster for long periods by starting large jobs during temporary lulls in utilisation.

Xena Configuration

Parameters Soft Limit Hardlimit
Number of Processors 64 128
Number of Nodes 4 (xena)
2(BigMem)
8 (xena)
4 (Bigmem)
Processors per Node 16(xena)
32(BigMem)
16 (xena)
32 (BigMem)
Node Access Policy Single Job/Node ie (Multiple users can’t share resources across same node)

Wheeler Configuration

Parameters Soft Limit Hardlimit
Number of Processors 160 400
Number of Nodes 20 50
Processors per Node 8 8
Node Access Policy Multi Job/Node ie (Multiple users may share resources across same node)

Gibbs Configuration

Parameters Soft Limit Hardlimit
Number of Processors 96 96
Number of Nodes 6 6
Processors per Node 16 16
Node Access Policy Single Job/Node ie (Multiple users can’t share resources across same node)
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