[Beowulf] MPI on single processor

[Carl_Notfors at veritasdgc.com]

On Mon, 28 Jun 2004, John Wohlbier wrote:

> Hi,
> I'm wondering if there is a way to emulate MPI,
> so that MPI software development may be done on a single
> processor box and run with "virtual nodes."

Just start the lam-daemon with your hostname or localhost in the lamhosts
file.  You then run mpirun with 2 or more processes.  THis works fine, we
do it all the time when developing software.

Carl