Downtime information
To ensure the continued performance, security, and reliability of CHPC systems, we conduct periodic planned maintenance outages for essential hardware and software upgrades.
The Center for High Performance Computing will have a downtime affecting all resources on December 16–17, 2025. This downtime will affect all CHPC resources, including clusters (redwood, granite, notchpeak, kingspeak, and lonepeak), standalone servers, virtual machines (VMs), and storage. This downtime is necessary to replace core network infrastructure. Reservations on the computing clusters have been put in place to ensure jobs will complete prior this downtime. Systems will be brought up on December 17 as the network replacement and any related system administration work is complete. An announcement will be made as resources are made available.
While we strive to minimize disruptions, unplanned outages may still occur due to factors beyond our control, including system failures or critical updates. Thank you for your patience and partnership as we maintain and improve CHPC resources.
For more information, please see