多虚拟机协同计算任务的描述方法

摘要

A descriptive methodology and its aided construction tool based on feature model for collaborative computing tasks over multiple virtual machines (CCTMVM) are studied to simple the description of parallel computing in virtualized platform and improve the development efficiency of applications. The tasks decomposition policies are discussed from the principle and method of tasks decomposition, tasks particle judgment and the heuristic rules, and then the appraisal criterion of parallel relationships among tasks is determined to describe the semantic actions of feature units based on their timing relationships. The validity of the descriptive method is determined to judge the effectiveness of the methodology presented from the coefficients of cohesion coupling and the granularities of feature units. A prototype of aided construction tools for CCTMVM is designed, and then a problem-solving application in computer aided engineering (CAE) is taken for an example to analyze its task decomposition. The experimental results show that the proposed idea and methodology have a certain feasibility for constructing a parallel computing-oriented CCTMVM.%研究了一种基于特征模型的多虚拟机协同计算任务(collaborative computing tasks over multiple virtual machines,CCTMVM)的描述方法及其辅助构造工具,以简化虚拟机平台中并行计算的描述,提高应用程序的开发效率.从任务分解的原则与方法、粒度评价方法和启发式规则等方面分析了任务分解的策略,确定了分解任务的并行关系判别准则,并依据时序关系对特征单元的语义动作进行了描述.从特征单元内聚、耦合及粒度系数对描述方法的有效性范围进行了分析.进行了CCTMVM辅助构造工具的原型设计,以一个计算机辅助工程(computer aided engineering,CAE)问题求解实例分析了任务构造过程.实验结果表明,本文所提思路和方法对构造面向并行计算的CCTMVM具有一定的可行性.