Most of the maintenance work scheduled for Wednesday on HPC systems at the NCAR-Wyoming Supercomputing Center went as expected, but unexpected problems encountered while restoring network components have prevented returning the systems to service on schedule.

CISL staff and the vendor, Mellanox, worked late into the night and resolved the primary issue. Additional work and testing will continue this morning but the Cheyenne and Casper clusters, GLADE file systems, Campaign Storage, data-access nodes, HPSS, and JupyterHub services are expected to remain unavailable until later today. Users will be notified of any significant changes to the schedule and are advised to watch for updates through the Notifier service.