How does OpenMPI auto-detect available hosts? I'm running on a cluster of dual-opterons running Debian Linux.
Just using "mpirun -np 4 hostname" somehow OpenMPI located the second dual-opteron in the stack of machines but no more than that, regardless of how many processes I asked for.
The master node has an internal ip of 10.0.0.0 and the second node has an ip of 10.0.0.1 and a name of "node02" and "node2"
I've been unable to find a file that contains only the name of my second node and not the others.
I'm currently running OpenMPI 1.2a1r10297. Michael
