Re: [slurm-users] Usage splitting

[Daniel Letai]

Wouldn't fairshare with a 90/10 split achieve this? This will require accounting is set in your cluster, with the following parameters: In slurm.conf set AccountingStorageEnforce=associations # And possibly '...,limits,qos,safe' as required - so perhaps just use '=all' PriorityType=priority/multifactor # Required by other parameters PriorityDecayHalfLife=14-0 # Every 14 days (two weeks) reset usage PriorityWeightFairshare=1 # With all other weights defaulting to 0, ensures only fairshare influences priority. TRESBillingWeights="Node=1" # According to docs, "Node" should be a TRES. I've never tested this. And from cmdline add the fair share split via: sacctmgr create account name=A fairshare=10 sacctmgr create account name=B fairshare=90 Than simply associate users to each account, and use something like 'sbatch --account=A ... '  to charge jobs to accounts. This won't do exactly what you want - it might allow 'A' to utilize more than 10%, if the cluster is under utilized. I'm not aware of a scheme where 'A' might be preempted only if it has been awarded more than it's fair share due to underutilization. If the 10% hard limit is a concern, it might be worth to investigate reservations, and allocate to 'A' only from a 10% reservation, while somehow allowing 'B' to utilize that reservation too if required. On 30/08/2019 14:14:16, Stefan Staeglich wrote: Hi, we have some compute nodes paid by different project owners. 10% are owned by project A and 90% are owned by project B. We want to implement the following policy such that every certain time period (e.g. two weeks): - Project A doesn't use more than 10% of the cluster in this time period - But project B is allowed to use more than 90% What's the best way to enforce this? Best, Stefan -- HTH, --Dani_L.