Active System Notices

System Downtime
Scheduled Downtime
The Ohio Supercomputer Center has scheduled a downtime for all HPC systems starting Tuesday, September 15th, 2015, beginning at 7 a.m and scheduled to finish by 5 p.m. The downtime will affect the Glenn, Oakley, and Ruby clusters, web portals (including OnDemand and AweSim), and HPC file servers. Login services and access to storage will not be available during this time.

In order to quiesce the system for an orderly shutdown the batch scheduler will begin holding jobs that cannot complete before 7 a.m. September 15th. 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.

Important updates will be done to the software stack on both Oakley and Ruby. This will include updating the default modules. Users who have built their own software may be required to rebuild their software or explicitly load the compiler and MPI modules used in building the software.

- For Oakley, see
- For Ruby, see

Other highlights of the downtime activities:

- Routine OS patches, updates, firmware updates
- Maintenance on Parallel File System (Lustre)
- Batch server software upgrades and configuration changes
- Network upgrades for data transfer nodes (,,

To stay up to date on system notices, please visit or follow @HPCNotices on Twitter.
Start: 09/15/2015 7am
End: 09/15/2015 5pm


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