Grid workflow authoring tools are typically specific to particular workflow engines built into grid middleware, or are application specific and are designed to interact with specific software implementations. g-Eclipse is a middleware independent grid workbench that aims to provide a unified abstraction of the grid and includes a grid workflow builder to allow users to author and deploy workflows to the grid. This paper describes the g-Eclipse Workflow Builder and its implementations for two grid middlewares, gLite and GRIA, and a case study utilizing the workflow builder in a grid user's scientific workflow deployment.
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