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Die ersten Kapitel konzentrieren sich auf die Informatik und beinhalten informatische Grundbegriffe, Rechnerarchitekturen und ein Performancemodell, OpenMP als Programmierumgebung für Mehrkernrechner und MPI und PVM als Programmiermodelle für Rechner mit verteiltem Speicher. Anschließend werden mathematische Algorithmen, Performancebetrachtungen, Design paralleler Programme und Ausführungen zu Simulationsprogrammen aus den Ingenieur- und Naturwissenschaften gegenübergestellt. Die nächsten Kapitel sind Performancebetrachtungen und Parallelisierungsstrategien für mathematische Algorithmen gewidmet, bevor abschließend GPUs behandelt und Teile der zuvor erläuterten Algorithmen auf diese übertragen und diskutiert werden. Roter Faden durch das mit vielen Erläuterungen und Quelltextbeispielen angereicherte Buch ist die Performanceanalyse unterschiedlicher Speicherungstechniken von Feldern am Beispiel der algorithmischen Lösung linearer Gleichungssysteme. Dazu wird zunächst das Gaußsche Eliminationsverfahren auf ein Blockverfahren umgestellt und dieses mit sehr hoher Performance auf einem Mehrkernrechner parallelisiert. Bei der iterativen Lösung linearer Gleichungssysteme steht das konjugierte Gradienten-Verfahren und seine fein granulare Parallelisierung im Vordergrund. Besonderes Augenmerk richtet sich dabei auf die Matrix-Vektor-Multiplikation und die Abhängigkeit der Performance von der Speicherungstechnik der Matrix. Gebietszerlegungsmethoden zur Lösung linearer Gleichungssysteme bieten einen grob granularen Parallelisierungsansatz, der für das massiv parallele Rechnen der fein granularen Parallelisierung auf Schleifenebene überlegen ist.
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This book is a collection of the papers presented at the 33rd Communicating Process Architecture (CPA) conference, held at the University of Limerick, Ireland, 19-22 June, 2011. It was hosted by Lero, the Irish Software Engineering Research Centre, and co-located with FM 2011 (the 17th International Symposium on Formal Methods), SEW-34 (the 34th Annual IEEE Software Engineering Workshop) and several specialist workshops and tutorials. These CPA proceedings contain the results from rich seams of research covering many of the key issues in modern computer science, which all seem to concern concu
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Modelling and simulation are disciplines of major importance for science and engineering. There is no science without models, and simulation has nowadays become a very useful tool, sometimes unavoidable, for development of both science and engineering. The main attractive feature of cellular automata is that, in spite of their conceptual simplicity which allows an easiness of implementation for computer simulation, as a detailed and complete mathematical analysis in principle, they are able to exhibit a wide variety of amazingly complex behaviour. This feature of cellular automata has attracted the researchers' attention from a wide variety of divergent fields of the exact disciplines of science and engineering, but also of the social sciences, and sometimes beyond. The collective complex behaviour of numerous systems, which emerge from the interaction of a multitude of simple individuals, is being conveniently modelled and simulated with cellular automata for very different purposes. In this book, a number of innovative applications of cellular automata models in the fields of Quantum Computing, Materials Science, Cryptography and Coding, and Robotics and Image Processing are presented.
Cellular automata. --- Computers, Iterative circuit --- Iterative circuit computers --- Structures, Tessellation (Automata) --- Tessellation structures (Automata) --- Parallel processing (Electronic computers) --- Pattern recognition systems --- Sequential machine theory --- Computer architecture & logic design
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Wireless cellular networks are an integral part of modern telecommunication systems. Today it is hard to imagine our life without the use of such networks. Nevertheless, the development, implementation and operation of these networks require engineers and scientists to address a number of interrelated problems. Among them are the problem of choosing the proper geometric shape and dimensions of cells based on geographical location, finding the optimal location of cell base station, selection the scheme dividing the total net bandwidth between its cells, organization of the handover of a call between cells, information security and network reliability, and many others. The book focuses on three types of problems from the above list - Positioning, Performance Analysis and Reliability. It contains three sections. The Section 1 is devoted to problems of Positioning and contains five chapters. The Section 2 contains eight Chapters which are devoted to quality of service (QoS) metrics analysis of wireless cellular networks. The Section 3 contains two Chapters and deal with reliability issues of wireless cellular networks. The book will be useful to researches in academia and industry and also to post-gradute students in telecommunication specialitiies.
Cellular automata. --- Computers, Iterative circuit --- Iterative circuit computers --- Structures, Tessellation (Automata) --- Tessellation structures (Automata) --- Parallel processing (Electronic computers) --- Pattern recognition systems --- Sequential machine theory --- WAP (wireless) technology
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Containing over 300 entries in an A-Z format, the Encyclopedia of Parallel Computing provides easy, intuitive access to relevant information for professionals and researchers seeking access to any aspect within the broad field of parallel computing. Topics for this comprehensive reference were selected, written, and peer-reviewed by an international pool of distinguished researchers in the field. The Encyclopedia is broad in scope, covering machine organization, programming languages, algorithms, and applications. Within each area, concepts, designs, and specific implementations are presented. The highly-structured essays in this work comprise synonyms, a definition and discussion of the topic, bibliographies, and links to related literature. Extensive cross-references to other entries within the Encyclopedia support efficient, user-friendly searchers for immediate access to useful information. Key concepts presented in the Encyclopedia of Parallel Computing include; laws and metrics; specific numerical and non-numerical algorithms; asynchronous algorithms; libraries of subroutines; benchmark suites; applications; sequential consistency and cache coherency; machine classes such as clusters, shared-memory multiprocessors, special-purpose machines and dataflow machines; specific machines such as Cray supercomputers, IBM's cell processor and Intel's multicore machines; race detection and auto parallelization; parallel programming languages, synchronization primitives, collective operations, message passing libraries, checkpointing, and operating systems. Topics covered: Speedup, Efficiency, Isoefficiency, Redundancy, Amdahls law, Computer Architecture Concepts, Parallel Machine Designs, Benmarks, Parallel Programming concepts & design, Algorithms, Parallel applications. This authoritative reference will be published in two formats: print and online. The online edition features hyperlinks to cross-references and to additional significant research. Related Subjects: supercomputing, high-performance computing, distributed computing
Programming --- Computer architecture. Operating systems --- Computer. Automation --- informatica --- computerbesturingssystemen --- programmeren (informatica) --- programmeertalen --- software engineering --- architectuur (informatica) --- Parallel processing (Electronic computers) --- EPUB-LIV-FT LIVINFOR SPRINGER-B
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This book constitutes the refereed proceedings of the 32nd International Conference on Applications and Theory of Petri Nets and Other Models of Concurrency, PETRI NETS 2011, held in Newcastle, UK, in June 2011. The 13 regular papers and 4 tool papers presented were carefully reviewed and selected from 49 submissions. The book also contains 3 full paper length invited talks. All current issues on research and development in the area of Petri nets and related models of concurrent systems are addressed.
Mathematical logic --- Logic --- Computer science --- Programming --- Computer. Automation --- informatica --- ontwerpen --- programmeren (informatica) --- programmeertalen --- wiskunde --- software engineering --- Petri nets --- Parallel processing (Electronic computers) --- Réseaux de Pétri --- Parallélisme (Informatique) --- Congresses --- Congrès --- EPUB-LIV-FT LIVINFOR SPRINGER-B
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