Here are some relevant links related to ProActive PACA Grid cluster:

ProActive Parallel suite web site: http://proactive.inria.fr
Activeon, Professional Open Source company, co-developing and providing support for the ProActive Parallel Suite: http://www.activeeon.com/
Grid 5000 European computing Grid: http://www.grid5000.org/
INRIA Sophia Antipolis NEF Cluster: https://www-sop.inria.fr/parallel/parallel.fr.html