Computing Grids and Peer-to-Peer networks are inherently heterogeneous and distributed, and for this reason they present new technological challenges: complexity in the design of applications, complexity of deployment, reusability, and performance issues.

The objective of this work is to provide an answer to these problems through the implementation for ProActive of an extensible, dynamical and hierarchical component model, Grid Component Model (GCM) based on Fractal . The GCM was defined by the CoreGRID NoE project and is available here .

This part documents the ProActive/GCM reference implementation developed by the GridCOMP European project .