Options

job slots, the maximum slots requested cannot be less than the minimum PROCLIMIT, and the minimum slots requested cannot be more than the maximum PROCLIMIT.

For example, if the queue defines PROCLIMIT=4 8:

◆bsub -n 6 is accepted because it requests slots within the range of PROCLIMIT

◆bsub -n 9 is rejected because it requests more slots than the PROCLIMIT allows

◆bsub -n 1 is rejected because it requests fewer slots than the PROCLIMIT allows

◆bsub -n 6,10 is accepted because the minimum value 6 is within the range of the PROCLIMIT setting

◆bsub -n 1,6 is accepted because the maximum value 6 is within the range of the PROCLIMIT setting

◆bsub -n 10,16 is rejected because its range is outside the range of

PROCLIMIT

◆bsub -n 1,3 is rejected because its range is outside the range of PROCLIMIT

See the PROCLIMIT parameter in lsb.queues(5) and lsb.applications(5) for more information.

In a MultiCluster environment, if a queue exports jobs to remote clusters (see the SNDJOBS_TO parameter in lsb.queues(5)), then the process limit is not imposed on jobs submitted to this queue.

Once at the required number of processors is available, the job is dispatched to the first host selected. The list of selected host names for the job are specified in the environment variables LSB_HOSTS and LSB_MCPU_HOSTS. The job itself is expected to start parallel components on these hosts and establish communication among them, optionally using RES.

Specify first execution host candidates using the -moption when you want to ensure that a host has the required resources or runtime environment to handle processes that run on the first execution host.

If you specify one or more first execution host candidates, LSF looks for a first execution host that satisfies the resource requirements. If the first execution host does not have enough processors or job slots to run the entire job, LSF looks for additional hosts.

-ooutput_file Specify a file path. Appends the standard output of the job to the specified file. Sends the output by mail if the file does not exist, or the system has trouble writing to it.

If only a file name is specified, LSF writes the output file to the current working directory. If the current working directory is not accessible on the execution host after the job starts, LSF writes the standard output file to /tmp/.

194Platform LSF Command Reference