As a reminder, scheduled maintenance will be performed on Grace beginning Monday, February 3, 2020, at 8:00 am. Maintenance is expected to be completed by the end of day, Wednesday, February 5, 2020.
During this time, logins will be disabled and connections via Globus will be unavailable. The Loomis storage will not be available on the Farnam cluster. We ask that you logoff the system prior to the start of the maintenance, after saving your work and closing any interactive applications. An email notification will be sent when the maintenance has been completed, and the clusters are available.
As the maintenance window approaches, the Slurm scheduler will not start any job if the job’s requested wallclock time extends past the start of the maintenance period (8:00 am on February 3, 2020). If you run squeue, such jobs will show as pending jobs with the reason “ReqNodeNotAvail”. (If your job can actually be completed in less time than you requested, you may be able to avoid this by making sure that you request the appropriate time limit using “-t” or “–time”.) Held jobs will automatically return to active status after the maintenance period, at which time they will run in normal priority order.
During this maintenance the directory hierarchy will be “flattened”. This is part of a larger campaign to standardize the clusters and make it easier for everyone to know where data are. The current paths are of the form
/gpfs/loomis/[project or scratch60]/[group]/[netid]
Please visit the status page at research.computing.yale.edu/system-status for the latest updates. If you have questions, comments, or concerns, please contact us at hpc@yale.edu.