Fabrizio Petrini is a member of the technical staff of the CCS3 group of the Los Alamos National Laboratory (LANL). He received his PhD in Computer Science from the University of Pisa in 1997. Before his appointment at LANL he was a research fellow of the Computing Laboratory of the Oxford University (UK), a postdoctoral researcher of the University of California at Berkeley and a member of the technical staff of the Hewlett Packard Laboratories. His research interests include performance evaluation, job scheduling algorithms, high performance interconnection networks and network interfaces, communication libraries and operating systems. He was the recipient of the European Community Marie Curie Fellowship in 1997, the Los Alamos Performance Award and the National Nuclear Security Agency (NNSA) Excellence Award, both in 2002.