Debate on Ecological Transitions, Fossa 2015, Nantes, France, Sep. 24, 2015.
System Software panel at the SOS13 workshop, Hilton Head, USA, Mar. 2009.
International Collaboration panel, Internet of Services 2008 collaboration meeting organized by Unit D3 on Service and Software of the European Commission.
Non-US Issues in Supercomputing panel, SOS 10 Workshop on Distributed Supercomputing, Maui, Hawaii, USA, Mar. 2006.
Scalable, high performance Linux: dream or reality? panel, SOS 9 workshop on science and supercomputing, Davos, Switzerland, Mar. 2005.
Small Clusters panel, 11th Forum ORAP, Clamart, Mar. 27, 2001.
Les grappes une alternative aux supercalculateurs panel, iHperf2000 Winter School, Dec. 7, 2000.