With the rapid development of high - speed networks and the design of software for network parallel computing such as pvm , mpi , express linda and p4 , the merits of network parallel computing , such as small costs , quick returns , strong flexility and high ratio of performance to costs , are more outstanding , making the network parallel computing be favored by more and more universities and research institutes both at home and abroad and become one of the important branches of parallel and distributed computing 高速信息网络的飞速发展以及网络并行计算支撑软件如pvm 、 mpi 、 express 、 linda , p4等的出现,使得网络并行计算的投资少、见效快、灵活性强、性能价格比高等诸多优点显得更加突出,受到国内外越来越多的大学和科研单位的青睐,已成为并行计算和分布式计算技术的重要发展方向。