Hi everybody, i wonder how slurm choose nodes to allocate ? and how can we change this ?
my problem is that i have ~80 nodes on one cluster : 1-40 have a special feature (OPA - Ominpath+infiniband) 41-80 are standard node (IB InfiniBand only) i would like to use only one partition with the 80 nodes, and that users who need OPA nodes could add a constraint "OPA+IB" to choose OPA+IB nodes and, that users who dont need OPA are given IB nodes if some are free, and OPA+IB nodes ONLY if no more IB are free. the goal is to do a best effort to reserve the OPA nodes to users who need them. i thought that if slum search free nodes from 1 to n, putting the OPA+IB node first in the numbering would do the trick, but it seems a little bit more complicated. any idea ? thank you very much. L. -- Laurent FACQ - +(33)5 4000 6956 Institut de Mathématiques de Bordeaux - Mathrice GDS 2754
