CHPC - Notice history

The Center for High Performance Computing will begin emergency maintenance to apply security updates to high-performance computing clusters (granite, notchpeak, kingspeak, lonepeak, and redwood) in a rolling fashion today (July 22). The updates are necessary to address a recently announced vulnerability. System administrators will update and reboot compute nodes when no jobs are running on them. This update will not affect running jobs, but researchers may see nodes in a “DRAIN” state before updates are applied; new jobs will not be able to start on a node until updates on that node finish.

The CHPC will also update interactive nodes, including login nodes (such as granite1 and granite2, redwood1 and redwood2, and similar nodes on other clusters) and research group-owned interactive nodes, on all high-performance computing clusters. Administrators will reboot the interactive nodes today at approximately 12:00 p.m. MDT to apply important security updates. We recommend signing out from interactive nodes prior to this time. Any active sessions or unsaved progress on interactive nodes will be lost when the nodes reboot.

In accordance with the CHPC’s emergency maintenance policy, important security patches must be applied promptly to protect system integrity and safety across our shared infrastructure. Thank you for your understanding and patience.

If you have any questions or concerns about upcoming security updates, please contact the CHPC by email at helpdesk@chpc.utah.edu.

The Center for High Performance Computing will have a downtime on Tuesday, July 14, 2026. The downtime will begin at 8:00 a.m. MDT and continue through the afternoon. It will affect high-performance computing clusters (granite, notchpeak, kingspeak, lonepeak, redwood; Open OnDemand) and standalone servers (including narwhal, beehive, and CryoSPARC and ColabFold servers) in the General and Protected Environments. In addition, storage systems in the General Environment will be rebooted during the maintenance window, which will affect access to storage and virtual machines. This downtime is necessary to apply patches and updates to systems following recent operating system vulnerabilities.

CHPC system administrators will apply updates and reboot systems in a rolling fashion throughout the day on July 14. There will be interruptions to the availability of HPC clusters and standalone servers during this time. CHPC staff will also migrate some internal services and systems, which will briefly affect the availability of metrics reported on the CHPC Portal.

Network administrators will also update software on network devices in the Protected Environment, though network updates are not expected to cause outages or interruptions. Additionally, storage administrators will update firmware; this, too, should have no effect on availability.

If you have any questions or concerns about the downtime or its effects, please contact the CHPC at helpdesk@chpc.utah.edu. Thanks for your support while we work to keep research computing resources secure.