Runs the specified job-based pre-execution command on the execution host before actually running the job.
properties
For a parallel job, the job-based pre-execution command runs on the first host selected for the parallel job. If you want the pre-execution command to run on a specific first execution host, specify one or more first execution host candidates at the job level using -m, at the queue level with PRE_EXEC in lsb.queues, or at the application level with PRE_EXEC in lsb.applications.
If the pre-execution command returns a zero (0) exit code, LSF runs the job on the selected host. Otherwise, the job and its associated pre-execution command goes back to PEND status and is rescheduled. LSF keeps trying to run pre-execution commands and pending jobs. After the pre-execution command runs successfully, LSF runs the job. You must ensure that the pre-execution command can run multiple times without causing side effects, such as reserving the same resource more than once.
The standard input and output for the pre-execution command are directed to the same files as the job. The pre-execution command runs under the same user ID, environment, home, and working directory as the job. If the pre-execution command is not in the user's usual execution path (the $PATH variable), the full path name of the command must be specified.