User limits on Anansi#
We have added new limits to the number of CPU cores and GPU shards a single user can request across all jobs on the interactive/debug cluster Anansi. The aim is to improve queueing times and to avoid situations where a single user submits many jobs and uses up the resources of Anansi, effectively blocking other users from running their OnDemand/batch jobs.
You can now request up to 16 CPU cores and up to 4 GPU shards across all jobs
on Anansi. If your running jobs already attain this limit any new jobs will
stay in the queue with Slurm Job Reason Code QOSMaxCpuPerUserLimit or
QOSMaxGRESPerUser. These jobs will start once your running jobs finish
and free up the necessary resources.
If a single job requests more than 16 CPU cores or more than 4 GPU shards it will not go to the queue but instead you will receive the message: “Job violates accounting/QOS policy (job submit limit, user’s size and/or time limits)”.
No changes to the way job submission works have been made, so you can submit jobs as you always have.
Contact us at VUB-HPC Support if you have any comments or questions about these changes.