【摘要】 本文研究了基于ＰｅｎｔｉｕｍＰＣ和１００Ｍｂｐｓ交换式以太网的机群系统的ＭＰＩ并行计算环境的通信及并行计算性能，并将其模型化。并且通过对典型应用实例的测试，分析了通信性能对并行计算性能（加速比、并行效率等）的影响更多还原

【Abstract】 This paper studies the communication performance in a MPI-based networked parallel computing system , and also studies the parallel performance evaluation model in such system. we have tested and analyzed the performance of various communication types. By testing a typical application, we have analyzed how communication performance affects performance of parallel computing.更多还原