Roller / Resch / Lammers High Performance Computing on Vector Systems 2007

1. Auflage 2007
ISBN: 978-3-540-74384-2
Verlag: Springer Berlin Heidelberg
Format: PDF
Kopierschutz: 1 - PDF Watermark

E-Book, Englisch, 267 Seiten

This book contains papers presented at the fifth and sixth Teraflop Workshop. It presents the state-of-the-art in high performance computing and simulation on modern supercomputer architectures. It covers trends in hardware and software development in general and specifically the future of vector-based systems and heterogeneous architectures. It covers computational fluid dynamics, fluid-structure interaction, physics, chemistry, astrophysics, and climate research.

Autoren/Hrsg.

Resch, Michael

Roller, Sabine

Lammers, Peter

Furui, Toshiyuki

Galle, Martin

Bez, Wolfgang

Inhaltsverzeichnis

1;Preface;6
2;Contents;9
3;List of Contributors;12
4;Applications I Geophysics and Climate Simulations;13
4.1;Sustained Performance of 10+ Teraflop/s in Simulation on Seismic Waves Using 507 Nodes of the Earth Simulator;14
4.1.1;1 Introduction;14
4.1.2;2 Numerical Technique;15
4.1.3;3 Examples of 2004 Great Sumatra Earthquake;17
4.1.4;4 Application to estimate the Earth’s internal structure;20
4.1.5;5 Discussion;23
4.1.6;Acknowledgments;23
4.1.7;References;24
4.2;Cloud-Resolving Simulation of Tropical Cyclones;26
4.2.1;1 Numerical simulation of tropical cyclones;26
4.2.2;2 Cloud-resolving models for simulations of tropical cyclones;28
4.2.3;3 An experiment on effects of ice phase processes on an idealized tropical cyclone;28
4.2.4;4 Future Perspective of Numerical Simulation of Tropical Cyclones;34
4.2.5;References;34
4.3;OPA9 – French Experiments on the Earth Simulator and Teraflop Workbench Tunings;36
4.3.1;1 Introduction;36
4.3.2;2 Vertical pumping associated with eddies;37
4.3.3;3 Oceanic CO;39
4.3.4;pumping and eddies;39
4.3.5;4 Dynamics of deep equatorial transport and mixing;40
4.3.6;5 First meters of the ocean and tropical climate variability;41
4.3.7;6 Application tunings for vector computers under the Teraflop Workbench;41
4.3.8;7 Conclusion;44
4.4;TERAFLOP Computing and Ensemble Climate Model Simulations;46
4.4.1;1 Introduction;46
4.4.2;2 The Dutch Computing Challenge Project;47
4.4.3;3 The ESSENCE Project;49
4.4.4;4 Summary and Conclusion;52
4.4.5;Acknowledgments;52
4.4.6;References;53
5;Applications II Computational Fluid Dynamics;54
5.1;Current Capability of Unstructured-Grid CFD and a Consideration for the Next Step;55
5.1.1;1 Introduction;55
5.1.2;2 Will CFD take over wind tunnels?;55
5.1.3;3 Rapid progress of computers;56
5.1.4;4 Demands for next-generation CFD;58
5.1.5;5 Building-Cube Method;59
5.1.6;6 Conclusion;62
5.1.7;References;62
5.2;Smart Suction – an Advanced Concept for Laminar Flow Control of Three- Dimensional Boundary Layers;63
5.2.1;1 Introduction;63
5.2.2;2 Laminar base flow;65
5.2.3;3 Smart Suction;67
5.2.4;4 Conclusions and Outlook;69
5.2.5;References;70
5.3;Supercomputing of Flows with Complex Physics and the Future Progress;71
5.3.1;1 Introduction;71
5.3.2;2 The Project: Numerical Turbine(NT);71
5.3.3;3 The Project: Supercritical-Fluids Simulator(SFS);76
5.3.4;4 Other Projects;77
5.3.5;5 Concluding Remarks;78
5.3.6;References;79
5.4;Large-Scale Computations of Flow Around a Circular Cylinder;80
5.4.1;1 Introduction;80
5.4.2;2 Performance of the code on the NEC SX-8;84
5.4.3;3 Instantaneous flow fields;86
5.4.4;4 Discussion and Conclusions;87
5.4.5;Acknowledgements;89
5.4.6;References;89
5.5;Performance Assessment and Parallelisation Issues of the CFD Code NSMB;91
5.5.1;1 Introduction and Background;91
5.5.2;2 Simulation Code NSMB;92
5.5.3;3 Description of the Tested Systems;93
5.5.4;4 Test Case and Benchmarking Procedure;94
5.5.5;5 Benchmarking Results;96
5.5.6;6 Conclusions;116
5.5.7;Acknowledgements;120
5.5.8;References;120
6;Applications III Multiphysics Computational Fluid Dynamics;121
6.1;High Performance Computing Towards Silent Flows;122
6.1.1;1 Introduction;122
6.1.2;2 Numerical Methods;124
6.1.3;3 Computational Setup;125
6.1.4;4 Results and Discussion;129
6.1.5;5 Conclusion;140
6.1.6;Acknowledgments;140
6.1.7;References;141
6.2;Fluid-Structure Interaction: Simulation of a Tidal Current Turbine;143
6.2.1;1 Basic equations;143
6.2.2;2 Dynamic mesh approach;144
6.2.3;3 Coupling fluid and structure;145
6.2.4;4 Results;147
6.2.5;Acknowledgements;148
6.2.6;5 Further investigations and outlook;148
6.2.7;References;149
6.3;Coupled Problems in Computational Modeling of the Respiratory System;150
6.3.1;1 Introduction;150
6.3.2;2 Modeling of Pulmonary Alveoli;151
6.3.3;3 Fluid-Structure Interaction of Lower Airways;162
6.3.4;4 Summary and Outlook;168
6.3.5;References;169
6.4;FSI Simulations on Vector Systems – Development of a Linear Iterative Solver ( BLIS);172
6.4.1;1 Introduction;172
6.4.2;2 Fluid structure interaction;173
6.4.3;3 Linear iterative solver;174
6.4.4;4 Numerical example;176
6.4.5;5 Performance;178
6.4.6;6 Summary;181
6.4.7;References;181
7;Applications IV Chemistry and Astrophysics;183
7.1;Simulations of Premixed Swirling Flames Using a Hybrid Finite- Volume/ Transported PDF Approach;184
7.1.1;1 Introduction;184
7.1.2;2 Numerical Model;186
7.1.3;CFD PDF;186
7.1.4;3 Results and Discussion;190
7.1.5;4 Conclusion;194
7.1.6;References;194
7.2;Supernova Simulations with the Radiation Hydrodynamics Code PROMETHEUS/ VERTEX;197
7.2.1;1 Introduction;197
7.2.2;2 Numerical models;198
7.2.3;3 The mathematical model;202
7.2.4;4 Optimization of the block-pentadiagonal solver;207
7.2.5;5 Parallelization;209
7.2.6;6 Conclusions;210
7.2.7;Acknowledgements;210
7.2.8;References;210
8;Applications V Material Science;213
8.1;Green Chemistry from Supercomputers: Car– Parrinello Simulations of Emim- Chloroaluminates Ionic Liquids;214
8.1.1;1 Introduction;214
8.1.2;2 Method;216
8.1.3;3 Results: Ionic structure;219
8.1.4;4 Results: Electronic structure;221
8.1.5;5 Computational performance;224
8.1.6;6 Conclusions;226
8.1.7;Acknowledgements;226
8.1.8;References;227
8.2;Micromagnetic Simulations of Magnetic Recording Media;229
8.2.1;1 Fundamentals of micromagnetics;229
8.2.2;2 A micromagnetic model;238
8.2.3;3 Applications of micromagnetics;242
8.2.4;4 Conclusions;244
8.2.5;References;244
9;Future High Performance Systems;245
9.1;The Potential of On-Chip Memory Systems for Future Vector Architectures;246
9.1.1;1 Introduction;246
9.1.2;2 Vector Architecture: Its Light and Shadow;247
9.1.3;3 On-Chip Memory Systems for Vector Architectures;250
9.1.4;4 Performance Evaluation;252
9.1.5;5 Summary;261
9.1.6;Acknowledgments;262
9.1.7;References;262
9.2;The Road to TSUBAME and Beyond;264
9.2.1;References;266