1. Inria and University of Paris-Sud, Orsay, France
2. University of Rennes 1, Rennes, France and ICHEC, Dublin, Ireland
3. ARM, Cambridge, UK
4. Technical University of Munich, Munich, Germany
5. University of Oregon, Eugene, OR, USA
6. Infrasoft IT Solutions, Plock, Poland
7. Google Inc., Toronto, Canada
8. National Center for Atmospheric Research, Boulder, CO, USA