Euro-Par 2011 : parallel processing workshops ; CCPI, CGWS, HeteroPar, HiBB, HPCVirt, HPPC, HPSS, MDGS, ProPer, Resilience, UCHPC, VHPC, Bordeaux, France, August 29–September 2, 2011 : revised selected papers, part I ([, Springer-Verlag], 2012)