Ohio Supercomputer Center
An approximately 4-hour downtime for part of the Ruby system is scheduled starting from 8 a.m. Monday, September 24, 2018. This will effect Ruby's login nodes and quick batch so users will not be able to access Ruby during this time, either via SSH or OnDemand. A portion of Ruby's compute nodes will not be affected and will continue to run jobs previously submitted. Other OSC services, including Oakley and Owens Clusters, web portals, and HPC file servers will be available.
In preparation for the downtime, the batch scheduler on Ruby will begin holding jobs that cannot be completed before 7 a.m. Monday, September 24, 2018. Jobs that are not started will be held until after the downtime and then started once Ruby is returned to full production status.