[OMPI devel] building a simple MPI cluster

Dear all, I wish to build a simple MPI cluster by putting together 3 similar machines. How exactly do i set up the logical connection between the three machines? Do i have to use NFS or SAMBA? Where exactly do I use RSH? Thanks.

[OMPI devel] clarification regarding optimization of MPI collective calls

Hello all, I learnt from a reliable source that MPI uses the services provided by TCP/IP or infiniband. Suppose that there is a bottle-neck in the TCP/IP layer itself, how will optimization of MPI calls really help? thanks