Robert Schreiber is a Principal Scientist at Hewlett Packard Laboratories.  His research interests include scientific computing, sequential and parallel algorithms for matrix computation, embedded computer systems, and compiler optimization of parallel programs.  Dr. Schreiber received his PhD from Yale University.  He has held faculty positions at Stanford University and Rensselaer Polytechnic Institute and was Chief Scientist of Saxpy Computer Corporation.  He is an editor of the Journal of the ACM.  Contact him at schreiber@hpl.hp.com.