Reminder: Cheyenne downtime 6/24-7/1 for OS update

June 20, 2019

A major Cheyenne operating system (OS) update is scheduled to begin Monday, June 24, and expected to be completed by Monday, July 1. The Cheyenne cluster will be unavailable during the update, including the system’s login nodes and all cron services.

Users will still be able to log in directly to Casper to run jobs on that cluster or access the GLADE file system and HPSS.

As announced previously:

  • The Cheyenne OS will be updated from SUSE Linux Enterprise Server (SLES) Service Pack 1 to Service Pack 4. This is to bring the system up to current security and support levels and is expected to be the last operating system upgrade in Cheyenne’s lifetime.

  • Some changes also will be made to the Cheyenne module environment to better support multiple compiler and MPI configurations while providing a more robust and easier to maintain user environment. Details here.

  • Most users’ programs and executables will need to be rebuilt following the update, as many system libraries will change.

  • Users should test their job scripts thoroughly after Cheyenne is returned to service.

The routine monthly maintenance times that were scheduled for July 2, August 6, and September 3 have been canceled.