A 24-hour dedicated time for all systems will occur from 6:00 a.m. (Pacific Time) Wednesday, July 23 to 6:00 a.m. Thursday, July 24 to facilitate system patching and InfiniBand infrastructure changes.

The following services will be affected:

• All compute systems in the enclave will be unavailable during this period, including Pleiades, Electra, Aitken, Endeavour, and Cabeus (V100, A100, and Grace Hopper nodes).
• The Lou mass storage system, Lustre, and NFS filesystems will also be unavailable. 
• Jobs on the compute systems will be drained from the nodes prior to the start of the dedicated time on Wednesday. Any jobs submitted to PBS that will not complete before the dedicated time begins will not run.
• The Pleiades front ends (PFEs), Aitken front ends (AFEs), Cabeus front ends, (CFEs), Cabeus Grace Hopper front ends, (CGHFEs), and Lou front ends (LFEs) will be unavailable during this period.

See Running Jobs Before Dedicated Time to learn how to manage your jobs to run before dedicated time.

If you have any questions or need assistance please contact the Control Room at (800) 331-8737, (650) 604-4444, or support@nas.nasa.gov.