一种基于GMA结构的开放式网格资源信息服务

网格是把广域网上大量分布、异构资源进行整合，实现统一视图和统一访问接口的基础设施．资源信息服务在网格中具有重要地位，其作用是感知和监控异构资源，并为上层应用提供资源信息，从而为资源调度和选择系统策略提供依据．传统的主机监控不能适用于网格，现有的网格资源信息服务也存在一定缺点．通过分析网格资源信息服务的一般要求，针对现有系统的不足，基于GGF提出的GMA体系结构，从几个不同方面提出了更适合网格特点，开放性和互操作性较好的改进方案，最后，一方面对资源信息服务的性能策略进行了讨论和理论分析，另一方面以目前实现的原型系统GridEye为基础，进行了资源信息服务的性能测试实验，并对结果进行了分析．

A GMA Based Open Grid Resource Information Service

The grid is a basic information infrastructure which integrates a mass of heteromerous resources distributed in the wide area network, and constitutes a virtual organization with uniform interface and user view.The resource information service, perceiving and monitoring the heteromerous resources, plays a key role in grid technology.The resource scheduler and the system strategy selecting should work according to the resource information provided by the service.In view of common requirements of the grid information services, based on the GMA architecture of GGF, an improved plan is proposed from several different ways, which is more open, more easily fits into the grid environment, and may be able to inter-operate with others.Finally the performance of the service is discussed and analyzed.On the other hand the service performance is experimented using the prototype system named GridEye and the result is analyzed.