Configure memory reservation for pending parallel jobs

About this task

You can reserve host memory for pending jobs.

Procedure

Set the RESOURCE_RESERVE parameter in a queue defined in lsb.queues.

The RESOURCE_RESERVE parameter overrides the SLOT_RESERVE parameter. If both RESOURCE_RESERVE and SLOT_RESERVE are defined in the same queue, job slot reservation and memory reservation are enabled and an error is displayed when the cluster is reconfigured. SLOT_RESERVE is ignored. Backfill on memory may still take place.

The following queue enables both memory reservation and backfill in the same queue:

Begin Queue
QUEUE_NAME = reservation_backfill
DESCRIPTION = For resource reservation and backfill
PRIORITY = 40
RESOURCE_RESERVE = MAX_RESERVE_TIME[20]
BACKFILL = Y
End Queue