Abstract
The communication performance of the Intel iPSC/860, Paragon XP/S and the Meiko CS-2 are compared using the COMMS1 benchmark from the Genesis Parallel Benchmark Suite. The challenge to distributed-memory massively-parallel processors presented by the Cray-C90 shared memory computer is highlighted by re-interpreting vector processing results as though they were measuring communication startup and bandwidth. The results show a wide gap between the two types of computer, in favour of the C-90. These results are for the initial issue of software and hardware of the Paragon and CS-2. Comments from Intel and Meiko are included to show how the manufacturers aim to improve communication performance.
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