to the Teraflop Workbench Project.- The HLRS-NEC Teraflop Workbench - Strategies, Result and Future.- Performance and Libraries.- Implication of Memory Performance in Vector-Parallel and Scalar-Parallel HEC Systems.- Recent Performance Results of the Lattice Boltzmann Method.- Linear Iterative Solver for NEC Parallel Vector Systems.- Visualization: Insight on Your Work.- Computational Fluid Dynamics.- Control of Turbulent Boundary-Layer Flow Using Slot Actuators.- Modelling of Reentry Nonequilibrium Flows.- A Lattice Boltzmann HPC Application in Medical Physics.- Molecular Dynamics.- Green Chemistry from Supercomputers: Car-Parrinello Simulations for Ionic Liquids.- Molecular Dynamics on NEC Vector Systems.- Large-Scale Ab initio Simulations for Embedded Nanodots.- Environment/Climate Modeling.- The Agulhas System as a Key Region of the Global Oceanic Circulation.- ECHAM5 - An Atmospheric Climate Model and the Extension to a Coupled Model.