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在分布环境下高度精确、可靠并且具有容错和检错能力的全局时钟是并行和分布式计算机监测系统中一个极其重要的组成部分 ,它直接决定了分布环境下监测工作的精度以至最终的监测分析结果 .本文以并行和分布式计算机监测系统 MS- 1为例 ,介绍了一种全局时钟设计方案 ,这种设计方案结合数字技术和锁相技术 ,采用容错和检错设计 ,具有理想的精度和可靠性以及很低的连接成本 .事实上 ,该时钟的设计思想可适用于任何分布式实时系统 .
A global clock with high accuracy, reliability and fault-tolerance and error-checking capability in distributed environment is an extremely important part of parallel and distributed computer monitoring system. It directly determines the accuracy of monitoring work in distributed environment and finally the monitoring and analysis Results In this paper, a parallel and distributed computer monitoring system MS-1, for example, introduced a global clock design, this design combines digital technology and phase-locked technology, using fault-tolerant and error detection design, with the desired accuracy and Reliability and low connection costs.In fact, the design idea of this clock can be applied to any distributed real-time system.