Job Submission Verifiers are expected to be a huge win for Grid Engine users and administrators but the feature is new enough that there is not a lot of best practices and working code “in the wild” that the community can copy and learn from …

In this mailing list thread, however, we get an actual JSV code snippet showing how one might intercept user “-pe ” requests and seamlessly alter the parallel environment request to one that makes use of the wildcard ‘*’ selector:

In the latest SGE, you can use the JSV(1) mechanism to do arbitrary
re-writes of the qsub options. I don’t remember seeing real examples of
this posted, so one that re-writes something like `-pe openmpi’ to
`-pe openmpi-*’ to hide the fact that there are multiple PEs for nodes
with different core counts, and you normally don’t want the parallel job
scheduled across such node groups.

  #!/bin/sh
  jsv_on_start() {
      return
  }
  jsv_on_verify() {
      pe=$(jsv_get_param pe_name)
      case "$pe" in
          openmpi | fluent)
          jsv_set_param pe_name "$pe-*"
          jsv_correct "Job was modified"
          ;;
      esac
      jsv_accept "Job OK"
      return
  }
  . ${SGE_ROOT}/util/resources/jsv/jsv_include.sh
  jsv_main