The Research Of Resource Access Based On Vega Grid

With the rapid development of science and technology, more and more large scale science computing need collaboration of HPC and multi-system, which give birth to the Grid. By high-speed network, the Grid aim at integrating all -resources in order to complete specified task, such as nuclear simulation, distributed computing, aviation.The grid technology is a hotspot in HPC research. The architecture design is the basis for constructing grid system. Based on the existing grid technologies, the design of Vega Grid is proposed and make research on some important issues studied. The fundamental idea of Vega Grid is to build a virtual, single grid super computer.One of the most strongpoint of Grid is sharing the resource in world wide, which include HPC, data resources, software. The data resources, which may be based on different operation system or different storage system, include all kinds of files, database resource and other data resource stored in distributed data warehouse. In order to cover the difference of data resources, grid must give the abstract model, which can provide a uniform interface for access data in grid.The paper introduces the background of Vega Grid, and analyze the access of data resources in Vega Grid, then it designs the architecture for access of data resources,and explains the implementation and pivotal techniques based on the practices of author.