sge jsv for java jobs memory reservation

gistfile1.sh

#!/bin/bash
  jsv_on_start() {
      return
  }

  jsv_on_verify() {

        # for debugging
        #params=$(jsv_show_params)
        #jsv_log_info "$params"

        pe_max=$(jsv_get_param pe_max)
        #jsv_log_info "$pe_max"

        # get h_vmem value. Something like 3.5G
        hvmem=$(jsv_sub_get_param l_hard h_vmem)

        # strip the G
        hvmem=$(echo "${hvmem%?}")

        # convert h_vmem to megabytes
        hvmem=$(echo "$hvmem * 1024" | bc)
        #jsv_log_info $hvmem

        #if pe_max is set (number of slots), 
        # multiply h_vmem * slots
        if [[ $pe_max ]]
        then
                hvmem=$(echo "$hvmem * $pe_max" | bc)
        fi

        # substract some memory from h_vmem for sge processes etc...
        hvmem=$(echo "$hvmem - 1024" | bc)

        # remove decimals
        hvmem=$(echo ${hvmem%.*})
        #jsv_log_info $hvmem

        # add the env var JAVAMX to the job context
 	# that will be used in the java wrapper
        jsv_add_env JAVAMX -Xmx"$hvmem"m

        # if needed I can also set java minimum memory (-Xms)
	# or any other java option or env var which later can 
        # be used in the java wrapper. This is not mandatory
	# jsv_add_env JAVAMS -Xms128m

    	jsv_accept "Job OK"
	return
  }

  . ${SGE_ROOT}/util/resources/jsv/jsv_include.sh
  jsv_main