支持e-全讯担保网

this paper presents an e-science grid architecture called virtual and dynamic hierarchical architecture (vdha). vdha is a decentralized architecture with some p2p properties. it also has scalable, autonomous, exact, and full service discovery properties. we have implemented a demonstration vdha_based grid prototype vdhagrid, which has scalable grid information service. vdha_grid is the core software for the project of the chinese university e-science grid. in this paper, advantages and several protocols of the vdha are also discussed.