An email notice to this effect was sent out to all members of the ARC user's group on October 20th. Here is a reminder:
We will have an outage on TinkerCliffs and Infer on Tuesday, November 2 from 4-8am so that network engineering can conduct critical updates to the switches that connect the Steger data center to the rest of campus. Cascades, DragonsTooth, and Huckleberry will remain operational during this time. We apologize for any inconvenience that this may cause.
If a job is held in the queue in a pending state with reason:
(ReqNodeNotAvail, Reserved for maintenance), the reservation of nodes in advance of the outage is the cause. You may leave your job in the queue and it will run when nodes are released from reservation after the maintenance.
Advanced Research Computing