Information Service Interoperation among Heterogeneous Grids

Information service is one of the key components of the grid system, and information service interoperation is the first step towards grid interoperation. Existing grid interoperability projects mainly focus on immediate bridge mechanisms, which is intricate and of poor scalability. A uniform information service interoperation framework (UISIF) is proposed in the paper, which adopts virtual layer and plug-in technology. There are two well-established grid systems in China, ChinaGrid and China National Grid, and they are built with two different grid middleware, CGSP and VEGA. With UISIF, these two grid systems make information service interoperation a reality. The experiments also show that the information service interoperation has low information querying latency and high accuracy; Moreover, UISIF has good scalability.