Wolfgang E. Nagel

  • This book presents the state-of-the-art in supercomputer simulation. It includes the latest findings from leading researchers using systems from the High Performance Computing Center Stuttgart (HLRS) in 2017. The reports cover all fields of computational science and engineering ranging from CFD to computational physics and from chemistry to computer science with a special emphasis on industrially relevant applications. Presenting findings of one of Europe's leading systems, this volume covers a wide variety of applications that deliver a high level of sustained performance.The book covers the main methods in high-performance computing. Its outstanding results in achieving the best performance for production codes are of particular interest for both scientists and engineers. The book comes with a wealth of color illustrations and tables of results.

  • Physics.- Simulations of Astrophysical Jets in Dense Environments.- Numerical Simulations of Host Galaxies of Gamma-Ray Bursts.- Electron-doping Evolution of the Quasiparticle Band of the Cuprates.- Libraries and Methods for Parallel Particle Simulations.- Solid State Physics.- Numerical Simulations of Quantum Gases, Magnetic, and Correlated Electronic Systems.- Large-Scale Simulations for Understanding Surface Optical Spectra.- Numerical Investigations of Nano-Systems in Reduced Geometry.- Computational Fluid Dynamics.- Direct Numerical Simulation of Non-Linear Transitional Stages in an Experimentally Investigated Laminar Separation Bubble.- Instabilities in Hypersonic Boundary Layers Under the Influence of High-temperature Gas Effects.- Direct Numerical Simulation of Breakup Phenomena in Liquid Jets and of Colliding Raindrops.- Numerical Investigation of the VKI Turbine Blade by Large Eddy Simulation.- A Hybrid LES/CAA Method for Aeroacoustic Applications.- Using Dynamic Mesh Models to Simulate Electrostatic Spray-Painting.- Numerical Simulation of Maneuvering Combat Aircraft.- Advanced Rotary Wing Aeromechanics.- Time-Accurate versus Actuator Disk Simulations of Complete Helicopters.- LES of Shock Wave/Turbulent Boundary Layer Interaction.- Detailed Combustion and Steamside Simulation of Fossil-fuel Fired Utility Boilers.- Chemistry.- Computational Chemistry.- Quantum Mechanical Studies of Boron Clustering in Silicon.- Ionic Liquids from A1C13.- Miscellaneous Topics.- Considerations of the Biot Velocity Relations: Viscous Finite-difference Calculations in Combination with Flow Simulations.- Plateness of the Oceanic Lithosphere and the Thermal Evolution of the Earth's Mantle.- Use of High Performance Computing in Gravity Field Research.- Molecular Modeling of Hydrogen Bonding Fluids.- Benchmarking MPI One-sided Communication with SKaMPI-5.

  • 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 Stuttgart's 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.

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