[slurm-users] random allocation of resources

mercan ahmet.mercan at uhem.itu.edu.tr
Wed Dec 1 20:05:46 UTC 2021


The Slurm is selecting the nodes according to the weight parameter of 
the nodes. I don't know any settings to change the way of the selecting 
node, except the changing values of the weights. But it is not a 
suitable for the randomly selecting nodes.

Fortunately, absolutely there is not any reason that I know to randomly 
selecting nodes. The modern hardware is not delicate as you thought. 
Nevertheless, if you want to circulate the nodes, you can change weights 
of the nodes, for example, at every three months.


Ahmet M.

1.12.2021 22:07 tarihinde Benjamin Nacar yazdı:
> Hi,
> Is there a scheduling option such that, when there are multiple nodes 
> that are equivalent in terms of available and allocated resources, 
> Slurm would select randomly from among those nodes?
> I've noticed that if no other jobs are running, and I submit a single 
> job via srun, with no parameters to specify anything other than the 
> defaults, the job *always* runs on the first node in slurm.conf. This 
> seems like it would lead to some hosts getting overused and others 
> getting underused. I'd like the stress on our hardware to be 
> reasonably evenly distributed.
> Thanks,
> ~~ bnacar

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