Euro-Par 2007 Workshops: Parallel Processing HPPC 2007, UNICORE Summit 2007, and VHPC 2007, Rennes, France, August 28-31, 2007, Revised Selected Papers - Bougé, Luc; Forsell, Martti; Träff, Jesper Larsson; Streit, Achim; Ziegler, Wolfgang; Alexander, Michael; Childs, Stephen (Springer Berlin Heidelberg, 2008)