Two teams — Computational Environment, and Computational Mathematics and Geometry — address research in the Computer Science Group. The target of our Computational Environment team is to provide the broad computational infrastructure necessary to support complex, large-scale simulations in general, and for rocket simulation in particular. Areas of research include parallel programming environments, compiler optimization and parallelization, parallel performance analysis and tools, parallel input/output, and visualization. Work in Computational Mathematics and Geometry focuses on the areas of linear solvers, mesh generation and adaptation, and interpolation between diverse discretizations.