Grid Interoperability at the Application Level Using SAGA

SAGA is a high-level programming abstraction, which significantly facilitates the development and deployment of Grid-aware applications. The primary aim of this paper is to discuss how each of the three main components of the SAGA landscape - interface specification, specific implementation and the different adaptors for middleware distribution - facilitate application-level interoperability. We discuss SAGA in relation to the ongoing GIN Community Group efforts and show the consistency of the SAGA approach with the GIN Group efforts. We demonstrate how interoperability can be enabled by the use of SAGA, by discussing two simple, yet meaningful applications: in the first, SAGA enables applications to utilize interoperability and in the second example SAGA adaptors provide the basis for interoperability.