网格QoS层次结构模型的研究

Hierarchical structure of grid QoS

基于网格QoS参数特性,在虚拟层将网格QoS参数分成逻辑资源类、系统类、安全类、信任类和记账类5种类型;根据不同对象在QoS描述的不同需要,构建了网格层次结构模型.本研究对提高网格资源利用及服务成功率有重要意义.

In service-oriented grid environment,due to the heterogeneousness,grid resources in different domains have different semantics in QoS definitions.To guarantee the user′s QoS demands and enable the various subservices to cooperate harmoniously,it needs to carry on QoS negotiation and semantics-based QoS parameter mapping.Therefore,further research on grid QoS and relations among QoS parameters is quite needed.Considering the characteristics of grid QoS,the QoS parameters are classified into five categories in virtual organization layer according to their properties.They are system QoS,logical resource QoS,security QoS,reliability QoS and accounting QoS.Then according to the various QoS description demands from different objects,a hierarchical structure of gird QoS is proposed.