title: LSF different resource request for multiple slots
body: <p>Is it possible to submit a job using LSF in which the initial execution slot has one value for rusage[mem=] and the others have different rusage values. Job is master-slave. Master needs lots of memory, slaves, not so much.
  Tried various select specifications, e.g., select[ 1*rusage[mem=6000] + 2*rusage[mem=1000]]  but only get "invalid resource specification" errors.</p>