New Cheyenne node memory and job script size limits

The maximum usable memory on Cheyenne’s batch nodes has been reduced by 1 GB, to 45 GB and 109 GB for the small and large memory nodes respectively. Also, the maximum PBS job script size has been set to 10 MB. Previously no limit was in effect.

The purpose of these changes is to improve overall system stability and the reliability of jobs running on shared nodes. Most users will be unaffected, but jobs that previously were close to using all available job memory may now fail. Please contact cislhelp@ucar.edu if you need assistance modifying your job scripts to meet these new limits.