Re: [OMPI users] Fwd: an error when running MPI on 2 machines

2013-02-11 Thread Paul Gribelyuk
Hi Jeff, Thank you for your email. The program make an MPI_Reduce call as the only form of explicit communication between machines… I said it was simple because it's effectively a very trivial distributed computation for me to learn MPI. I am using the same version, by doing "brew install open

Re: [OMPI users] Fwd: an error when running MPI on 2 machines

2013-02-11 Thread Jeff Squyres (jsquyres)
Can you provide any more detail? Your report looks weird - you said its a simple c++ hello world, but the executable you show is "pi", which is typically a simple C example program. Are you using the same version of open MPI on all nodes? Are you able to run n way jobs on single nodes? Sen