Details

Autor(en) / Beteiligte

• Pellegrini, S.
• Giacomini, F.

Titel

Design of a Petri Net-Based Workflow Engine

Ist Teil von

• 2008 The 3rd International Conference on Grid and Pervasive Computing - Workshops, 2008, p.81-86

Ort / Verlag

IEEE

Erscheinungsjahr

2008

Quelle

IEEE Electronic Library Online

Beschreibungen/Notizen

• Several years of research are establishing Petri nets as a modeling formalism for scientific workflows; their formal semantics and the existence of several analysis tools, among others, make them suitable for complex concurrent processes' description. However, the non-determinism of the Petri Net model clashes with the imperative Turing- based environment provided by mainstream programming languages such as C/C++, Java and C#. Therefore several design decisions must be taken in order to provide a concrete implementation of a Petri Net-based engine. This paper proposes the architecture of a workflow engine - currently implemented in a workflow management system (WfMS) - with the goal to provide a reliable and efficient platform for the execution of scientific workflows in a grid environment. One of the design principle is the neutrality towards the underlying mechanisms for task execution, in order not to compromise interoperability with multiple infrastructures.