You can use node feature in defining the node types in slurm.conf. Then when requesting for the job, use -C <feature name> toy just use those node type.
On Fri, May 11, 2018, 5:38 AM Antonio Lara <antonio.l...@uam.es> wrote: > Hello everyone, > > Hopefully someone can help me with this, I cannot find in the manual if > this is even possible: > > I'm a system administrator, and the following question is from the > administrator point of view, not the user's point of view: > > I work with a cluster which has a partition containing many nodes. These > nodes belong to "different categories". This is, we bought at once > several machines that are of the same type, and we did this several > times. So, for example, we have 10 machines of type A, 20 machines of > type B and 15 machines of type C. Machines of type A are more powerful > than machines of type B, which are more powerful than machines of type C. > > What I am trying to achieve is that Slurm "forces" parallelized jobs to > be allocated in machines of the same type, if possible. That is, that > there is some type of priority which tries to allocate only machines of > type A, or only machines of type B, or only of type C, and only > distribute jobs among machines of different types when there are not > enough nodes of the same type available. > > Does anyone know if this is possible? The idea behind this is that > slower machines are not delaying the calculations in faster machines > when a job is distributed among them, and all machines work more or less > at the same pace. > > I've been told that It is NOT an option to create different partitions, > each containing only one type of machine. > > Please, note that I'm not looking for a way to choose as a user which > nodes to use for a job, what I need is that slurm does that, and decides > what nodes to use, using similar nodes if available. > > The closest that I could find in the manual was using consumable > resources, but I think this is not what I need, there are several > examples, but they don't seem to fit with this. > > Thank you for your help! > > >
