Purdue University

Link to update at July 28, 2025 12:03pm EDT UPDATE: July 28, 2025 12:03pm EDT

This is a reminder that the Negishi cluster will be under maintenance beginning tomorrow July 29th, 2025 at 5am until July 30th, 2025 at 5pm. This maintenance will require all jobscripts to be updated to use the new updated Slurm options outlined in the original maintenance notice. Jobscripts that are not updated will result in submission errors. Please familiarize yourself with the required options described in our User Guide.

Link to update at July 16, 2025 12:53pm EDT UPDATE: July 16, 2025 12:53pm EDT

This is a reminder of the Negishi Slurm maintenance that will be occurring in two weeks. If you have not had an opportunity to consult the new user guide page linked in the original posting, this is a good opportunity to do so.

Additionally, in order to give our vendor enough time to complete the cooling loop work being performed during this maintenance, we are updating the start time of this maintenance to allow work to begin at 5am instead of 8am. The original maintenance posting has been updated accordingly.

Link to original posting ORIGINAL: July 29, 2025 5:00am - July 30, 2025 5:00pm EDT

When will it Happen?

The Negishi cluster is scheduled for maintenance and will be unavailable on Tuesday, July 29th, 2025 at 8:00am EDT until July 30th, 2025 at 5:00pm EDT.

What is being upgraded?

During this maintenance, Negishi will have its scheduler's configurations updated to allow for the use of more modern features within Slurm, its ZFS and lustre storage systems will be updated, and maintenance will be performed on the cooling loop serving its compute nodes.

How does this affect you?

• The Negishi cluster will be unavailable during the maintenance window.
• Slurm jobs that are still queued when this maintenance begins on Tuesday, July 29th, 2025 at 8:00am EDT will be deleted.
• 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.
• The Slurm options required for job submission will change during this maintenance. See our related news posting.
• The output of slist and the default output of squeue will be modified to be more useful under the new design.
• The available options for creating jobs through Open OnDemand will change to accomodate the new options.

How can you prepare for these changes?

In order to minimize disruption in researcher workflows, we have updated Negishi's User Guide page on Job Submission to describe the new method of job submission and this should be reviewed by users before the maintenance.

If you have questions about this upgrade or need help from our support staff, please reach out to us at rcac-help@purdue.edu.