Comparing The Performance Of Mpi On

T3E-900, the Cray Origin 2000 and the IBM P2SC on a collection of 13 communication tests. These tests call MPI routines using 2 to 64 processors with messages varying from 8 bytes to 10 MBytes. The relative performance of these machines varied depending on the communication test, but overall the T3E-900 was often 2 to 4 times faster than the Origin 2000 and P2SC. The Origin 2000 and P2SC performed about the same for most of the tests