Reminder: Yellowstone being decommissioned December 31

The Yellowstone supercomputing cluster will be decommissioned on December 31, 2017. The system will be powered down on that date and no longer available to users.

The Geyser and Caldera clusters will remain in production until the end of 2018. Users can learn about how to access those systems from the Cheyenne cluster in training sessions are scheduled for December 4 and 19. See Training: How to access Geyser and Caldera from Cheyenne for more details and how to register.

Users who have not already done so are strongly encouraged to migrate their work to Cheyenne as soon as possible to avoid unnecessary interruptions. Documentation available to help with the transition includes this Quick start overview, procedures and scripts for running jobs, and this recorded tutorial. For help in migrating job scripts or rebuilding executables, please contact

It is not necessary to copy or move files to HPSS or to another disk space to ensure that they are available from Cheyenne after Yellowstone’s decommissioning. All files in the GLADE system file spaces—home, scratch, work, and project—are accessible via Cheyenne already. Copying or archiving files unnecessarily will waste expensive tapes and valuable disk space while increasing use of your allocation.

See our allocations documentation if you do not already have a Cheyenne allocation. University users who want to convert an existing Yellowstone allocation to a Cheyenne allocation should email that request to