The last two years have been great for high performance computing in Baden- W urttemberg and beyond. In July 2005, the new building for HLRS as well as Stuttgarts new NEC supercomputer which is still leading edge in G- many have been inaugurated. In these days, the SSC Karlsruhe is ?nalizing the installation of a very large high performance system complex from HP, built from hundreds of Intel Itanium processors and more than three th- sand AMD Opteron cores. Additionally, the fast network connection with a bandwidth of 40Gbit/s and thus one of the ?rst installations of this kind in Germany brings the machine rooms of HLRS and SSC Karlsruhe very close together. With the investment of more than 60 Million Euro, we as the users of such a valuable infrastructure are not only thankful to science managers and politicians, but also to the people running these components as part of their daily business, on a 24-7 level. Sinceabout18months,therearelotsofactivitiesonallscienti?c,advisory, and political levels to decide if Germany will install an even larger European supercomputer, where the hardware costs alone will be around 200 Million Euro for a ?ve year period. There are many good reasons to invest in such a program because beyond the infrastructure such a scienti?c research tool will attract the best brains to tackle the problems related to the software and methodology challenges.

Physics.- Gravitational Wave Signals from Simulations of Black Hole Dynamics.- The SuperN-Project: Understanding Core Collapse Supernovae.- MHD Code Optimizations and Jets in Dense Gaseous Halos.- Anomalous Water Optical Absorption: Large-Scale First-Principles Simulations.- The Electronic Structures of Nanosystems: Calculating the Ground States of Sodium Nanoclusters and the Actuation of Carbon Nanotubes.- Object-Oriented SPH-Simulations with Surface Tension.- Simulations of Particle Suspensions at the Institute for Computational Physics.- Solid State Physics.- Nano-Systems in External Fields and Reduced Geometry: Numerical Investigations.- Signal Transport and Finite Bias Conductance in and Through Correlated Nanostructures.- Atomistic Simulations of Dislocation Crack Interaction.- Monte Carlo Simulations of Strongly Correlated and Frustrated Quantum Systems.- Chemistry.- Characterization of Catalyst Surfaces by STM Image Calculations.- Theoretical Investigation of the Self-Diffusion on Au(100).- TrpAQP: Computer Simulations to Determine the Selectivity of Aquaporins.- Computational Fluid Dynamics.- Direct Numerical Simulation and Analysis of the Flow Field Around a Swept Laminar Separation Bubble.- Direct Numerical Simulation of Primary Breakup Phenomena in Liquid Sheets.- Direct Numerical Simulation of Mixing and Chemical Reactions in a Round Jet into a Crossflow a Benchmark.- Numerical Simulation of the Bursting of a Laminar Separation Bubble.- Parallel Large Eddy Simulation with UG.- LES and DNS of Melt Flow and Heat Transfer in Czochralski Crystal Growth.- Efficient Implementation of Nonlinear Deconvolution Methods for Implicit Large-Eddy Simulation.- Large-Eddy Simulation of Tundish Flow.- Large Eddy Simulation of Open-Channel Flow Over Spheres.-Prediction of the Resonance Characteristics of Combustion Chambers on the Basis of Large-Eddy Simulation.- Investigations of Flow and Species Transport in Packed Beds by Lattice Boltzmann Simulations.- Rheological Properties of Binary and Ternary Amphiphilic Fluid Mixtures.- The Effects of Vortex Generator Arrays on Heat Transfer and Flow Field.- Investigation of the Influence of the Inlet Geometry on the Flow in a Swirl Burner.- Numerical Investigation and Simulation of Transition Effects in Hypersonic Intake Flows.- Aeroelastic Simulations of Isolated Rotors Using Weak Fluid-Structure Coupling.- Computational Study of the Aeroelastic Equilibrium Configuration of a Swept Wind Tunnel Wing Model in Subsonic Flow.- Structural Mechanics.- Numerical Prediction of the Residual Stress State after Shot Peening.- Computer-Aided Destruction of Complex Structures by Blasting.- Wave Propagation in Automotive Structures Induced by Impact Events.- Miscellaneous Topics.- Continental Growth and Thermal Convection in the Earths Mantle.- Efficient Satellite Based Geopotential Recovery.- Molecular Modeling of Hydrogen Bonding Fluids: Monomethylamine, Dimethylamine, and Water Revised.- The Application of a Black-Box Solver with Error Estimate to Different Systems of PDEs.- Scalable Parallel Suffix Array Construction.