MPI on dual linux boxes

 Dear CCL'ers,
 Does anybody have experience in
 running (compiling) MPI programs
 on Linux cluster of _DUAL_ boxes.
 Is LAM/MPI distributed with SuSE 6.1 an appropriate
 choice? Particularly for running two processes
 on one box? Any other choices?
 We would appreciate any comments on that matter.
 Thanks in anticipation,
 Walter Alsheimer, Alexei Matveev