网格信息服务互操作策略研究

Research on Grid Information Interoperation Strategy

针对当前网格中间件中信息服务系统的差异性和不可互操作性,提出了一种基于插件和虚拟层的网格信息服务互操作策略。该策略可以屏蔽底层网格中间件信息服务部件的异构性,为终端用户和作业调度模块提供统一的服务访问接口。通过在CSGrid网格互操作项目中的成功应用,该策略体现了以下特点:可在互操作的同时,保证各网格系统的独立性;只需开发一些插件就可扩展到更多的网格平台,具有良好的可扩展性;能够提供一定的可靠性保证和服务质量保证。

Most of existing grid middleware information systems are short of comparability and interoperability. This paper provides a grid information interoperation strategy based on plug- in and virtuallayer mechanism. It smoothes the differences of underlying grid middleware information systems, and provides the uniform service access interface for end users and job scheduling module. In addition, this strategy is applied in the grid interoperation project CSGrid successfully. The experiment shows that this strategy has the following features：ensuring the independence of the grid systems while interoperation; being able to extended to more grid systems while developing some plugs, having good expan.dability;easy to manage; being able to provide the reliability and quality of service guarantee.