Hyak consists of 1 cluster: mox.hyak (the 2nd generation hyak system).
mox.Hyak is online.*offline to troubleshoot issues. Updates will be sent to the hyak-users mailing list.
*When a maintenance reservation is in place, jobs whose time limit (sbatch --time parameter) could allow the job to extend into the maintenance period will not be allowed to start by the scheduler. The squeue command will show the reason as 'ReqNodeNotAvail'.
Hyak will be offline from 9:00 am - 5:00 pm for scheduled maintenance the second Tuesday of every month. Every third month (Feb, May, Aug, Nov), the maintenance window will last from 9:00 am to 9:00 the following morning. More on the Maintenance schedule.