The Ohio Supercomputer Center has scheduled a two-phase downtime for all HPC systems starting Tuesday, July 8, 2014, beginning 6 a.m. The first phase of the downtime will end at 6 p.m. that day, when the bulk of services will return to production. The second phase tentatively will last until 5 p.m., July 9, 2014. The downtime will affect the Glenn Cluster, Oakley Cluster, web portals, and HPC file servers. Login services and access to storage will not be available during Day One.
In order to quiesce the system for an orderly shutdown the batch scheduler will begin holding jobs that cannot complete before 6 a.m. on July 8. Jobs that are not started will be held until after the downtime and then started once the system is returned to production status.
Departmental clusters that we are administering will not be affected by this outage.
Highlights of the downtime activities:
- Upgrade to new InfiniBand network spine switches to provide room for growth for future systems.
- Modifications to the OSC LDAP servers to improve account management.
- Various software updates and routine maintenance.
- Upgrade to the Lustre server and client software.