出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：This paper describes practical applications using resources on different kinds of Grid middleware. At the KEK Computing Research Center, many jobs must be submitted for physics simulations involving large number of data files from physics experiments. The available resources of the various Grids should be used in a cooperative way, but specialized knowledge is currently required to use each Grid. Our solution is using SAGA (Simple API for Grid Applications), which provides a unified interface that conceals the differences among the different kinds of Grid middleware. We developed SAGA adaptors for job execution, file management, and catalog services. The job adaptors we created are applied to each kind of Grid middleware: NAREGI, PBSPro, and Torque. The file adaptors support the Data Grids: iRODS and Gfarm. The replica adaptor currently in use is for the catalog service: RNS (Resource Namespace Service) and iRODS. SAGA with the adaptors allows us to utilize the various Grid resources along with local resources without any concerns about the underlying middleware. Technical details and sample applications are described in this paper.
