def run_bulk(t, first, last, incr = 1)
                retry_until { DRMAA.run_bulk_jobs(t.ptr, first, last, incr) }
            end
def run_bulk(t, first, last, incr = 1)
                retry_until { DRMAA.run_bulk_jobs(t.ptr, first, last, incr) }
            end
submits bulk job described by JobTemplate 't'
 and returns an array of job id strings