Workflow composer and service registry for grid applications

Automatic composition of workflows from Web and Grid services is an important challenge in today's distributed applications. The system presented in this paper supports the user in composing an application workflow from existing Grid services. The flow composition system builds workflows on an abstract level with semantic and syntactic descriptions of services available on the Grid. Two main modules of the system are the flow composer and the distributed Grid service registry. We present motivation, the concept of the overall system architecture and the results of a feasibility study.