Ohio Supercomputer Center
An approximately 3-hour downtime for the Pitzer system is scheduled starting from 9 a.m. Tuesday, September 22, 2020, to finalize the Slurm transition on the Pitzer system. This will affect the Pitzer legacy nodes (compute and login nodes), as well as the new Pitzer hardware. During this downtime time, users will not be able to access Pitzer and submit jobs. Other OSC services, including Owens and Ruby Clusters, web portals, and HPC file servers will be available, while users will expect a small interruption to OnDemand at the beginning of downtime
Jobs that are submitted to the current Pitzer cluster but do not get started before 9 a.m. on September 22 will be removed from the system; we will inform the impacted users to resubmit the jobs. To help reduce the number of jobs to be removed, we will temporarily disable the 'longserial' queue and start to reduce the maximum walltime by 24 hours per day until the max walltime reaches 24 hours on all other queues on Pitzer beginning on Tuesday, September 15. The maximum walltime will be changed back to the original value and the 'longserial' queue will be reenabled once the downtime completes.