Why Do All My Open MPI Processes Have Rank 0?

Question

I\'m writing a parallel program using Open MPI. I\'m running Snow Leopard 10.6.4, and I installed Open MPI through the homebrew package ma

Answer 1

I have had the same problem with openMPI in C on linux. Using MPIch2 in stead , the problem was fixed (but remember to run MPI_Finalize() at the end or it gets weird.)