网格服务管理是网格计算的核心问题。通过对于目前网格服务管理体系架构的三种模型进行分析和比较,基于开放式服务体系架构(OGSA),探讨了网格服务管理系统的功能需求,进而设计了一种层次化的网格服务管理模型HGSM,描速了模型的工作流程。将网格服务管理分为任务分解、静态调度和动态调度三种层次,讨论了HGSM的各个层次的相关功能模块,以有向无环图和高级随机Petri网分别对于任务分解和服务调度提出了相关算法。算法中的可实施谓词、随机开关、实施速率等描述可以直接在SPN求解软件的编程中实现,从而为构造一种屡次化的网格服务管理模型提供一个可实现的有效途径。
Grid service management is the core issue of Grid service management architecture,functionality requirements have Computing.Through analyzing and comparing three kinds of Grid been presented.Based on Open Grid Service Architecture(OGSA), a Hierarchical Grid Service Management (HGSM) has been proposed,working flow of the model has been described.Grid service management is divided into three hierarchies,task decomposing,static scheduling and dynamic scheduling and related functional module of each hierarchy is discussed.Algorithms of task decomposing and service scheduling are proposed by using directed acyclic graph and high level stochastic Petri net.The firing predicative,stochastic switch and firing rate can be directly implemented in Stochastic Petri Net software.This provides an effective way for Grid service management model.