Dear Slurm users, we are running a cluster that has a flat account structure. All accounts have a monthly limit that can only change on the 1st of a month. Users assigned to the very same account shall not compete against each other (created with fairshare=parent) and their fairshare shall be calculated only regarding consumption in the current month. We are using the multifactor priority plugin.
I tried to set: PriorityType=priority/multifactor PriorityFlags=NO_FAIR_TREE PriorityUsageResetPeriod=MONTHLY PriorityDecayHalfLife=0 What I expected: If an account used 50% of its budget, its fairshare value will be 0.75, independently of the day of the month. What happens: The raw_usage does not get normalised against the max-cluster raw_usage of the current month. It does not even get normalised against the max-cluster raw_usage of the time passed in the current month, but only against the raw usage of all projects. This will also lead to fluctuating values if the cluster is not used near full capacity. This leads to projects that have used 50% of their budget on the 3th day of the month suddenly seeing fairshare values below 0.005. Since I do not see any option to get the fairshare calculation the way I want it to work, I am now trying to manually set the fairshare values. However, I can't find an option to turn of the internal fairshare calculation. Please help me with the Slurm configuration so that the fairshare values are not automatically recalculated and the manual set values remain. Would it be enough to set PriorityCalcPeriod to an extremely high value or 0? I am aware that the manually calculated and propagated fairshare values will not be updated as often and am fine with that. I am also aware that balancing might not be as smooth with this method, but we need transparent and understandable fairshare values. With kind regards Michael Müller -- Michael Müller Application Developer / Administrator Department of System and Service Design (SDE) Center of Information Services and High Performance Computing (ZIH) Dresden University of Technology 01069 Dresden phone: (0351)463-35261 www: www.tu-dresden.de/zih
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