Different slave nodes in terms of CPU

Hi Everyone,

I have a small cluster with 8 nodes. All the nodes have the same specification in terms of the CPU but the amount of RAM each has. I would like to add to the queue some spare computers as well. However, these computers do not have the same specifications(different CPU brand, # of cores and freq. etc) as that of the nodes. Would appreciate it if anyone inform me if this could be a performance issue for the cluster or it does not matter at all?

  1. For the cluster it does not matter
  2. if you are running a MPI job make sure all the nodes are perfromance nodes and not mixed nodes. As the performance is matched to the slowest node.
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