Supporting Dynamic Parallel Application Execution in the Grid

Dynamic parallel applications such as CFD-OG impose a new problem for distributed processing due to their dynamic resource requirements at run-time. These applications are difficult to adapt in the current distributed processing model (such as the Grid) because of a lack of interface for them to directly communicate with the runtime systemand the delay of resource allocation. In this paper, we propose a novel mechanism, the Application Agent (AA) embedded between an application and the underlying conventional Grid middleware to support the dynamic resource requests on the fly. We introduce AA´s dynamic process management functionality and its resource buffer policies which stores resources in advance to maintain the execution performance of the application.