LSF Version 7.3 - Platform LSF Configuration Reference

Default
no
RESOURCE_RESERVE
Syntax
RESOURCE_RESERVE=MAX_RESERVE_TIME[integer]
Description
Enables processor reservation and memory reservation for pending jobs for the queue.
Specifies the number of dispatch turns (MAX_RESERVE_TIME) over which a job can reserve
job slots and memory.
Overrides the SLOT_RESERVE parameter. If both RESOURCE_RESERVE and
SLOT_RESERVE are defined in the same queue, an error is displayed when the cluster is
reconfigured, and SLOT_RESERVE is ignored. Job slot reservation for parallel jobs is enabled
by RESOURCE_RESERVE if the LSF scheduler plugin module names for both resource
reservation and parallel batch jobs (schmod_parallel and schmod_reserve) are configured in
the lsb.modules file: The schmod_parallel name must come before schmod_reserve in
lsb.modules.
If a job has not accumulated enough memory or job slots to start by the time
MAX_RESERVE_TIME expires, it releases all its reserved job slots or memory so that other
pending jobs can run. After the reservation time expires, the job cannot reserve memory or
slots for one scheduling session, so other jobs have a chance to be dispatched. After one
scheduling session, the job can reserve available memory and job slots again for another period
specified by MAX_RESERVE_TIME.
If BACKFILL is configured in a queue, and a run limit is specified with -W on bsub or with
RUNLIMIT in the queue, backfill jobs can use the accumulated memory reserved by the other
jobs in the queue, as long as the backfill job can finish before the predicted start time of the
jobs with the reservation.
Unlike slot reservation, which only applies to parallel jobs, memory reservation and backfill
on memory apply to sequential and parallel jobs.
Example
RESOURCE_RESERVE=MAX_RESERVE_TIME[5]
This example specifies that jobs have up to 5 dispatch turns to reserve sufficient job slots or
memory (equal to 5 minutes, by default).
Default
Not defined. No job slots or memory is reserved.
RES_REQ
Syntax
RES_REQ=res_req
lsb.queues
314 Platform LSF Configuration Reference