Dedicated Time for Electra and Cabeus Grace Hopper Nodes, Sept. 3

19 Aug, 2025

The Electra supercomputer and Cabeus Grace Hopper nodes will be taken offline on Wednesday, September 3 from 7:00 a.m. to 7:00 p.m. (Pacific Time) to facilitate InfiniBand network infrastructure changes.

The following services will be affected:

  • Electra and Cabeus Grace Hopper systems will be unavailable during this period.
  • Jobs on these 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 Cabeus Grace Hopper front ends (CGHFEs) will be unavailable during this period.

See Running Jobs Before Dedicated Time in the Knowledge Base 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.

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