: Siegfried Wagner, Matthias Steinmetz, Arndt Bode, Markus Michael Müller
: Siegfried Wagner, Matthias Steinmetz, Arndt Bode, Markus Michael Müller
: High Performance Computing in Science and Engineering, Garching/Munich 2009 Transactions of the Fourth Joint HLRB and KONWIHR Review and Results Workshop, Dec. 8-9, 2009, Leibniz Supercomputing Centre, Garching/Munich, Germany
: Springer-Verlag
: 9783642138720
: 1
: CHF 196.20
:
: Wahrscheinlichkeitstheorie, Stochastik, Mathematische Statistik
: English
: 780
: Wasserzeichen/DRM
: PC/MAC/eReader/Tablet
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The Leibniz Supercomputing Centre (LRZ) and the Bavarian Competence Network for Technical and Scienti?c High Performance Computing (KONWIHR) publish in the present book results of numerical simulations facilitated by the High P- formance Computer System in Bavaria (HLRB II) within the last two years. The papers were presented at the Fourth Joint HLRB and KONWIHR Review and - sult Workshop in Garching on 8th and 9th December 2009, and were selected from all progress reports of projects that use the HLRB II. Similar to the workshop two years ago, the majority of the contributed papers belong to the area of computational ?uid dynamics (CFD), condensed matter physics, astrophysics, chemistry, computer sciences and high-energy physics. We note a considerable increase of the user c- munity in some areas: Compared to 2007, the number of papers increased from 6 to 12 in condensed matter physics and from 2 to 5 in high-energy physics. Bio s- ences contributed only one paper in 2007, but four papers in 2009. This indicates that the area of application of supercomputers is continuously growing and entering new ?elds of research. The year 2007 saw two major events of particular importance for the LRZ. First, after a substantial upgrade with dual-core processors the SGI Altix 4700 superc- puter reached a peak performance of more than 62 Tera?op/s. And second, the n- pro?t organization Gauss Centre for Supercomputing e. V. (GCS) was founded on April 13th.
689210
References690
Ab Initio Molecular Dynamics Simulations of Aqueous Glycine Solutions: Solvation Structure and Vibrational Spectra692
Introduction692
Methods693
Results and Discussion695
Conclusions and Outlook699
References699
Cyclodimerization of DNA and RNA Bases: Ab Initio Study of the Cyclodimerization of the Uracil Dimer Through a Butane-Like Conical Intersection702
Introduction702
Computational Methods704
Results and Discussion705
Geometry Optimization705
Vertical Excitation Energies706
Reaction-Path Energy Profiles707
Conclusions709
Technical Support709
References710
Numerical Simulation of Electric Field Gradient Focusing and Separation of Analytes in Microchannels with Embedded Bipolar Electrode712
Introduction712
Experimental Section713
Theoretical Background715
Numerical Methods718
Results and Discussion719
Conclusion722
References723
Part VIII Bio Sciences724
Annotation of Entirely Sequenced Genomes725
Methods726
Iterated Profile-Based Search (PSI-BLAST)726
Functional Sequence Motifs (ProSite)726
Low-Complexity Regions (SEG)726
Domain Assignment (ProDom)727
Secondary Structure (PHDsec)727
Solvent Accessibility (PHDacc)727
Globularity of Proteins (GLOBE)728
Transmembrane Helices (PHDhtm)728
Secondary Structure (PROFsec) and Solvent Accessibility (PROFacc)728
Coiled-Coil Regions (COILS)729
Disulphide Bridges (DISULFIND)729
Structural Switches (ASP)729
Localisation Classification (LOCtree)729
Prediction of Nuclear Localisation Signal (PredictNLS)730
Keyword Based Prediction of Cellular Localization (LOCkey)730
Prediction of Unstructured Loops (NORSnet)730
Prediction of Natively Unstructured Regions Through Contacts (Ucon)731
Meta-Disorder Predictor (MD)731
Prediction of Flexibility (PROFbval)731
Reflect731
Results and Discussion733
Parallelization Techniques733
Number of Processors Used/Degree of Parallelization734
Job Run Times735
Conclusion735
References736
Molecular Dynamics Simulation of the Nascent Peptide Chain in the Ribosomal Exit Tunnel738
Introduction738
Methods740
Principles of Molecular Dynamics740
Periodic Boundary Condition742
Temperature and Pressure Coupling742
Parallelisation Techniques743
Preparation of Simulation System743
Results744
Achieved Performance on the HLRB system744
Conformations of Polypeptides Inside the Tunnel744
References746
Preparing RAxML for the SPEC MPI Benchmark Suite747
Introduction747
The Phylogenetic Likelihood Kernel749
Sources of Parallelism in Phylogenetic Analyses and Related Work750
Efficient Parallelization of the Phylogenetic Likelihood Kernel751
Master/Worker Scheme752
Experimental Setup and Results754
Conclusion756
References757
Parallel Computing with the R Language in a Supercomputing Environment759
Introduction759
R and Parallel Computing760
R at the HLRB2761
Benchmark763
Applications764
Indirect Comparison of Interaction Graphs764
Parallel Computing in Microarray Data766
Conclusion768
References769