I-Lab project encompasses five institutes of the Fraunhofer Group Information and Communication Technology are developing a so-called Problem Solving Environment, which is based on a Fraunhofer computing grid.

In particular Fraunhofer Resource uses Petrinet-based workflow management of grid jobs described in Grid Application Definition Language (GADL) that is XML based.

Some background information as slides and a paper: An XML-Based Framework for Loosely Coupled Applications on Grid Environments by Andreas Hoheisel and Uwe Der and overview of GADL 0.2
Availability, Download, Licence: ???
For more informaition contact Andreas Hoheisel

Subject: ProjectsList ScientificWorkflows