Running jobs with these characteristics without chunking can under utilize resources because LSF spends more time scheduling and dispatching the jobs than actually running them.
Configuring a special high-priority queue for short jobs is not desirable because users may be tempted to send all of their jobs to this queue, knowing that it has high priority.
CPU limit greater than 30 minutes (CPULIMIT parameter in lsb.queues or lsb.applications). If CHUNK_JOB_DURATION is set in lsb.params, the job is chunked only if it is submitted with a CPU limit that is less than or equal to the value of CHUNK_JOB_DURATION (bsub -c)
Run limit greater than 30 minutes (RUNLIMIT parameter in lsb.queues or lsb.applications). If CHUNK_JOB_DURATION is set in lsb.params, the job is chunked only if it is submitted with a run limit that is less than or equal to the value of CHUNK_JOB_DURATION (bsub -W)
Run time estimate greater than 30 minutes (RUNTIME parameter in lsb.applications)