In DM the differences between the MPI codes is not as pronounced as seen in SM. Under WMPI the C and mpiJava codes display very similar performance characteristics throughout the range tested. Under MPICH, there is distinct performance difference between C and mpiJava. However the difference is much smaller than in SM and the curves converge at the 4k. All curves peak at about 1 MByte/s, which is about 90% of the maximum attainable on 10Mbps Ethernet link.