Glenn Retirement

Glenn Cluster Retired: March 24, 2016

The Glenn Cluster supercomputer has been retired from service to make way for a much more powerful new system. As an OSC client, the removal of the cluster will result in work being added to the heavy workload being handled by Oakley or Ruby, potentially impacting you.

Why is Glenn being retired?

Glenn is our oldest and least efficient cluster. In order to make room for our new cluster, to be installed later in 2016, we must remove Glenn to prepare the space and do some facilities work.

How will this impact me?

Demand for computing services is already high, and removing approximately 20 percent of our total FLOP capability will likely result in more time spent waiting in the queue. Please be patient with the time it takes for your jobs to run. We will be monitoring the queues, and may make scheduler adjustments to achieve better efficiency.

How long will it take before the new cluster is online?

We expect the new cluster to be partially deployed by Aug. 1, and completely deployed by Oct. 1. Even in the partially deployed state, there will be more available nodes: 1.5x more cores, and roughly 3x more FLOPs available than there are today.

Is there more information on the new cluster?

Please see our webpage:

Need help, or have further questions?

We will help. Please let us know if you have any paper deadlines or similar requirements. We may be able to make some adjustments to make your work more efficient, or to help it get through the queue more quickly. To see what things you should consider if you have work to migrate off of Glenn, please visit

Please contact OSC Help, our 24/7 help desk.
Toll Free: (800) 686-6472
Local: (614) 292-1800