Hello, I have a test cluster of 4 nodes that each have two quad core CPU's. Previous benchmarks with an atmospheric model showed that there's an issue with the quad cores in the sense that the speed of the front side bus is a limiting factor. I would like to have control over the allocation of nodes.
Using the MPI TM interface I request: #PBS -l nodes=4:ppn=4 lamboot mpiexec hello_mpi lamhalt What happens is that the job is run on two nodes, each node running two chunks of 4 "cpus" (which are actually cores). That is not really desirable. I would like to divide the job over 4 nodes. My initial guess was that I could control node allocation with the nodeallocationpolicy parameter, but I fail to get it working. Does anyone have any experience with a similar issue? Is it possible? Best regards, Sander _______________________________________________ mauiusers mailing list [email protected] http://www.supercluster.org/mailman/listinfo/mauiusers
