February 26 Cheyenne maintenance update

February 26, 2020

All work scheduled for Tuesday at the NCAR-Wyoming Supercomputing Center (NWSC) was completed on time and without incident. HPE engineers repaired 26 InfiniBand fabric switches, Nortek engineers completed maintenance on the system’s cooling units, and CISL HPC specialists updated several system software stack components. CISL network engineers successfully rebooted key network switches and installed important security updates. These repairs and updates are expected to have a significant impact on Cheyenne’s performance and reliability.

The Casper cluster, the GLADE and Campaign Storage file systems, data-access nodes, and HPSS were returned to service before 10:30 p.m. MST, more than an hour ahead of schedule. Users can access these systems while Cheyenne is unavailable by logging in at casper.ucar.edu.

Cheyenne is expected to be returned to service no later than Saturday evening. Watch for regular updates in CISL’s Daily Bulletin and Notifier service.