Beginning October 20, as recently announced, users will be able to submit jobs to run on the Cheyenne and Casper systems from either of those systems with the introduction of the new peer-scheduling capability. To make peer scheduling possible, environmental settings will no longer be propagated from the submission host to PBS jobs on Cheyenne. Please see Propagating environment settings to a PBS job for a full description of the change and what, if anything, users need to do.