Monthly maintenance will take place on January 12th, 2026. Our maintenance tasks should be completed between 9am-1pm.
NOTICES:
Changes to SEAS partitions, please see tasks below.
Changes to job age priority weighting, please see tasks below.
Status Page: You can subscribe to our status to receive notifications of maintenance, incidents, and their resolution at https://status.rc.fas.harvard.edu/ (click Get Updates for options).
We'd love to hear success stories about your or your lab's use of FASRC. Submit your story here.
MAINTENANCE TASKS
Cannon cluster will be paused during this maintenance?: YES
FASSE cluster will be paused during this maintenance?:YES
Slurm upgrade to 25.11.1
In conjunction with SEAS we will modify seas_gpu and seas_compute time limits
Audience: SEAS users
Impact:
seas_gpu: will be set to 2 days maximum
seas_compute: will be set to 3 days maximum
Existing pending jobs longer than these limits will be set to 2 day and 3 day run times depending on partition.
Job Age Priority Weight Change
Audience: Cluster users
Impact: We will be adjusting the weight applied to the priority earned by jobs by virtue of their age. Currently job priority is made up of two factors, Fairshare and Job Age. The Job Age factor is currently set such that jobs gain priority over 3 days with a maximum priority equivalent to jobs with Fairshare of 0.5. This keeps low fairshare jobs from languishing at the bottom of the queue. With the current settings though, users with low fairshare can gain significant advantage over users with higher relative fairshare. To remedy this we will be adjusting the Job Age weight to cap out at an equivalent Fairshare of 0.1. This will still allow jobs with 0 fairshare to gain priority and thus not languish while letting fairshare govern a wider range of higher priority jobs.
Login node reboots
Open OnDemand (OOD) node reboots
Netscratch retention will run
Audience: All cluster netscratch users
Impact: Files older than 90 days will be removed. Please note that retention cleanup can and does run at any time, not just during the maintenance window.
Thank you,
FAS Research Computing
https://docs.rc.fas.harvard.edu/
https://www.rc.fas.harvard.edu/
