Scheduled Rossmann Maintenance
Link to update at December 9, 2025 9:34pm EST UPDATE:
As of 9:33pm EDT, we have concluded with the work for this maintenances, and the cluster is back online. If you encounter any difficulties using the new accounts, reach out to us at rcac-help@purdue.edu.
Link to update at December 9, 2025 9:08pm EST UPDATE:
As of 9:00pm EDT, our engineers continue to work on this maintenance. We will provide another update by 10pm EDT.
Link to update at December 9, 2025 7:05pm EST UPDATE:
As of 7:00pm EDT, our engineers continue to work on this maintenance. We will provide another update by 8pm EDT.
Link to update at December 9, 2025 4:54pm EST UPDATE:
As of 4:52pm EDT, our engineers continue to work on this maintenance. We will provide another update by 7pm EDT.
Link to original posting ORIGINAL:
When will it Happen?
The Rossmann cluster is scheduled for maintenance and will be unavailable on Tuesday, December 9th, 2025 at 8:00am EDT until 5:00pm EDT.
What is being upgraded?
During this maintenance, Rossmann will have its scheduler's configurations updated to allow for resources to be purchased and allocated on the basis of CPU and GPU hour.
How does this affect you?
- Slurm jobs that are still queued when this maintenance begins on Tuesday, Dec 9th, 2025 at 8:00am EDT will be deleted.
- Your Slurm account names will change. Accounts using CPU resources will be suffixed with "-cpu" and accounts using GPU resources will be suffixed with "-gpu".
- A reservation will be created that will prevent jobs from starting if their end time would take the job past the start of maintenance. Because pending jobs will be deleted, these jobs will never run.
- Your CPU jobs will now be billed by the CPU-hour as the GPU jobs on Rossmann are currently.
- The output of slist and the default output of squeue will be modified to be more useful under the new design.
- The preemptible QOS will now utilize the GraceTime feature of Slurm allowing preemptible users to more easily checkpoint their jobs.
If you have questions about this upgrade or need help from our support staff, please reach out to us at rcac-help@purdue.edu.