Sangamesh B wrote:
I reinstalled all softwares with -O3 optimization. Following are the performance numbers for a 4 process job on a single node:MPICH2: 26 m 54 s OpenMPI: 24 m 39 s
I'm not sure I'm following. OMPI is faster here, but is that a result of MPICH2 slowing down? The original post at http://www.open-mpi.org/community/lists/users/2008/10/6891.php had:
OpenMPI - 25 m 39 s. MPICH2 - 15 m 53 s. So, did MPICH2 slow down, or can one not compare these timings?
