一种基于网络跳数的网格信息服务机制

Grid Information Service Mechanism Based on Network Hops

网格信息服务向用户提供网络距离近的资源提供者,对于网络敏感型应用具有重要意义.本文引入网络坐标来标识网格节点的网络位置,运用网络跳数算法预测用户和资源提供者之间的网络跳数,信息服务向用户返回网络跳数依次增大的资源提供者列表,以便于网格调度器更加有效地调度各种任务.经网格模拟器JFreeSim仿真表明,这种基于网络跳数的网格信息服务能有效提高网络敏感型应用的信息服务质量,从而提升网格资源共享和协作的性能.

For network-sensitive applications ,it is important for grid information service to supply resource providers with near network distanee. In this paper,network coordinates are introduced to locate each grid node. With the network hop algorithm, network hops between user and resource providers can be forecasted,and the result can be submitted to grid information service,which offers a list of resource providers with network hops increasing so that scheduler can work more efficiently. It also can keep away the baleful nodes. Performance improves that it is suitable for network-sensitive application and can enhance the ability of grid resource sharing and collaboration