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If you find that your batch job is not resource efficient (CPU/wall time ratio is low AND memory (RA(M) usage is lower (less than 1.5GB, use "bjobs -l job_id" to find out)), try putting two tasks in one batch job (in the above script) and let them run in parallel. But be careful. Don't run too many tasks in a batch job in parallel because it is possible to overwhelm some components in the tightly coupled computing environment.
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