数字图书馆网格应用模型研究（Ⅱ）—网格监控与调度

Digital Library Application Model Based on Grid（Ⅱ）-Grid Monitoring and Grid Scheduling

本文论述了在基于网格的数字图书馆检索模型中网格所要实现的功能，设计并构建了网格监控和网格调度。在数字图书馆网格应用中网格监控包括网格监视和网格管理。网格调度是网格资源管理的核心，它负责接收用户的作业请求，并选择适当的资源运行用户作业；建立了资源发现、系统选择和作业执行3个阶段的网格调度机制和网格服务功能。文章论述了WSRF工厂模式实现网格调度服务的关键步骤，即使用WSDL定义Web服务，根据WSDL文件生成Stub文件，用Java语言实现服务端网格服务、部署服务和客户端程序设计。实践证明，这种网格监控和调度方案是有效的。

In this paper, the author discusses the role and the function of grid in our Grid-based retrieval model of digital library, and realizes such functions as grid monitoring and grid scheduling. Grid scheduling is the core of grid resource management , whose operations are responsible for receiving user request; the selection of appropriate resources to run user operations ; establishing a resource discovery, system selection and implementation of a three-stage operation grid scheduling mechanism. This paper discusses the crucial step of using WSRF factory mode develop grid services, that is, using WSDL define Web services, generated Stub files from WSDL, using Java implement grid services, and the deployment of client services. Practice has proved that this grid monitoring and scheduling is efficient.