High Performance Computing in Science and Engineering '10: Transactions of the High Performance Computing Center, Stuttgart (HLRS) 2010

High Performance Computing in Science and Engineering '10: Transactions of the High Performance Computing Center, Stuttgart (HLRS) 2010

Wolfgang E. Nagel, Dietmar B. Kröner, Michael M. Resch

Language: English

Pages: 619

ISBN: 2:00038531

Format: PDF / Kindle (mobi) / ePub


<body><p class="MsoBodyText"><span lang="EN-GB">This book presents the state-of-the-art in simulation on supercomputers. Leading researchers present results achieved on systems of the High Performance Computing Center Stuttgart (HLRS) for the year 2010. The reports cover all fields of computational science and engineerin<span>g,</span> ranging from CFD <span>to</span> computational physics and chemistry to computer science<span>,</span> with a special emphasis on industrially relevant applications. Presenting results for both vecto<span>r s</span>ystems and micr<span>op</span>rocesso<span>r-b</span>ased systems<span>,</span> the book <span>makes it possible</span> to compare <span>the</span> performance levels and usability of various architectures. As HLRS operates the largest NEC SX-8 vector system in the world<span>,</span> this book gives an excellent insight into the potential of vector systems<span>, covering</span> the main methods in high performance computing. Its outstanding results in achieving <span>the</span> highest performance for production codes are of particular interest for both scientist<span>s</span> and engineer<span>s</span>. The book <span>includes</span> a wealth of col<span>or</span> illustrations and table<span>s</span></span><span lang="EN-GB">.</span>
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symbolic program FORM by external software”, arXiv:cs.sc/0604052; FORM can be obtained from the distribution site at http://www.nikhef.nl/˜form. 2. M. Tentyukov, D. Fliegner, M. Frank, A. Onischenko, A. Retey, H.M. Staudenmaier and J.A.M. Vermaseren, “ParFORM: Parallel Version of the Symbolic Manipulation Program FORM”, arXiv:cs.sc/0407066; Massive and Massless Four-Loop Integrals 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 27 M. Tentyukov, H.M. Staudenmaier and

Fig. 5. Time-averaged value of the alpha parameter as a function of the number of grid cells in the vertical direction per scale height for all models. The “error bars” correspond to the deviation from the mean value SKH. A look at Fig. 4, left panel, suggests that it is especially the region near the midplane that is not sufficiently resolved, since the stress drops there noticeably, while in the better resolved models it does not. The results depicted in Fig. 2 suggest that once a resolution of

molecule is kept fixed throughout all calculations and chosen to maximally restrict the interaction with the surface to the thiolate head group. The atoms are not allowed to relax. One set of calculations is performed with the C3 carbon atom located directly above the thiolate S atom and a second series of calculations with the S-C3 bond tilted with respect to the surface normal (nomenclature is presented in Fig. 1a). The results are presented in Fig. 2a and b respectively. We find that the

The current interest in spin liquids (SL) goes back to seminal work by P. W. Anderson on resonating valence bonds states (RVB), their relevance to the antiferromagnetic (AF) quantum Heisenberg model on low-dimensional lattices [7, 8], and implications on a possible mechanism for superconductivity in the cuprates [9, 10]. There is however compelling evidence, that on the square [11], triangular [12] and honeycomb lattice [13], the nearest-neighbor Heisenberg model does not realize such SL states,

the laser beam a damping ramp is introduced into the equations of motions at the end of the sample. A coordinate-dependent friction of the form −ξ(x)x˙ j leads to a smooth dying out of the pressure wave. Intensive tests have shown that this procedure is sufficiently accurate for the simulation of laser ablation, such that more complex methods like a dynamically computed compensating force at the end of the probe are not required. 2.5 Cluster Analysis of the Gas Phase The inhomogeneous ablation

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