并行虚拟机(parallel virtual machine,简称PVM)是并行工作站机群系统中流行的并行软件 环境之一.分析了PVM的实现机制，指出PVM低效的原因，并给了基于高速精简通信层调整消 息传递(fast message passing,简称FMP)的高性能PVM(high-performance PVM,简称HPVM) 的详细设计和实现.%PVM (Parallel Virtual Machine) software is one of the most popular software envi ronments used on parallel workstation cluster system. However, with the rapid in crease in the speed of local area networks as well as in the performance of work station, PVM, which is based on the low-efficiency internal and the low-effici ency communication protocol, has become the bottleneck of the cluster systems. I n this paper, it is explained how PVM restrains the performance of clusters, by pointing out and analyzing the limitation of PVM's mechanism. Then the details o f the design and implementation of HPVM (High-performance PVM) are given, which is based on a high-speed reduced communication layer named FMP (Fast Message P assing).
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