UML based grid workflow modeling under ASKALON

Abstract

Most existing Grid workflow modeling tools are based on user-defined notations. Lack of standards hinders the collaboration among different Grid-related projects. The work presented in this paper introduces a graphical workflow editor Teuta, which has been implemented based on the latest standard UML 2.0 notations and tailored for specifying Grid workflows based on our Abstract Grid Workflow Language (AGWL). In Teuta, Grid workflows are composed by combining predefined UML modeling elements or user-defined constructs in a hierarchical fashion. Teuta can generates the corresponding AGWL representations and submit them to the ASKALON Grid runtime system for execution. We validate our approach for a real world hydrological application.