IT Center Changes

We updated Slurm to a newer and more stable Version: 25.05.5

This upgrade fixed issues we had with our scheduling system and internal rights-management database.
We improved how Slurm calculates priority for pending Jobs based on user feedback and internal metrics. Here is a short summary with basic details.
In short:
– Job waiting times will be more predictable and intuitive.
– Longer waiting times will increase the priority of a pending jobs.
– Jobs will still be able to access resources quickly if recent resource usage quotas are low.
Details:
– A pending job will not be delayed by any other new jobs (see its expected start time increase into the future) after 24 hours of waiting.
– Note that other software or hardware malfunctions might still cause delays in jobs, but new jobs will no longer cause this after 24 hours.
– A pending job with low fair-share factor might still be delayed by new jobs with higher fair-share factors during the first 24 hours of waiting.
– The project used for a job (default or otherwise) will determine its fair-share priority factor based on recent resource usage.
– Projects that have already used their “fair-share” of resources, will have a lower fair-share priority factor than projects with lower recent resource usage.
– Priorities and fair-share priority factors only matter for comparing jobs waiting for the same resources (e.g: partitions).