David Womble is the Senior Manager of the Computer Science Research Institute (CSRI) and the Computer Science and Mathematics Group at Sandia National Laboratories. He earned a Ph.D. in Applied Mathematics and a M.S. in Electrical Engineering from Georgia Tech in 1986. His general research interests are in the area of numerical algorithms for modeling and simulation and parallel computing. Specific research interests include the solution of large linear systems of equations, multilevel methods, parallel I/O, and seismic imaging.