Hi all,
now I'm testing R in a "virtual cluster", made it with VirtualBox. This one
has 3 nodes, running CentOS 5 and OpenMPI 1.2.8, and the principal node
(called "server") exports the /home to other nodes.
I have installed R and OpenMPI in /home, in fact, it seems work OK. Editing
the openmpi-default-hostfile and run "mpirun -np 3 hostname" I can see the
hostname of all nodes in my cluster.
But my problem comes when I want to spawn several nodes in R. I have
installed R 2.6.1 and Rmpi 0.5.5. When I run mpi.spawn.Rslaves(nslaves=3)
for example, it only spawn 3 processors in the same node, in fact, the local
node.
How I can tell to Rmpi that there are 2 o more nodes in the cluster? This
problem can be solved passing a hostfile like an argument?

Thanks for all

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