A Comparison of MPI, SHMEM and Cache - Coherent Shared address Space Programming Models on a Tightly-Coupled Multiprocessors

摘要

We compare the performance of three major programming models on a modern, 64-processor hardware cache-coherent machine, one of the two major types of platforms upon which high-performance computing is converging. We focus n applications that are either regular, predictable or at least do not require fine-grained dynamic replication of irregularly accessed data. Within this class, we use programs with a range of important communication patterns.