A Workflow-Based Grid Portal for Problem Solving Environment

In this paper, we present a Workflow-based grId portal for problem Solving Environment(WISE) which has been developed by integrating workflow, Grid and web technology to provide an enhanced powerful approach for problem solving environment. Workflow technology supports coordinated execution of multiple application tasks on Grid resources by enabling users to describe a workflow by composing many existing applications and new functions, and provides an easy powerful tool to create new Grid applications. We propose new Grid portal to allow us to use Grid resources with improved workflow patterns to represent various parallelisms inherent in parallel and distributed Grid applications and present Grid Workflow Description Language(GWDL) to specify our new workflow patterns. Also, We shall show that the MVC(Model View Control) design pattern and multi-layer architecture provides modularity and extensibility to WISE by separating the application engine control and presentation from the application logic for Grid services, and the Grid portal service from Grid service interface.