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Author : Euripidis Bampis
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (493 download)
Download or read book L'impact des communications sur la complexite des algorithmes paralleles written by Euripidis Bampis and published by . This book was released on 1993 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : L. Dekker
Publisher : Elsevier
ISBN 13 : 1483290433
Total Pages : 996 pages
Book Rating : 4.4/5 (832 download)
Download or read book Massively Parallel Processing Applications and Development written by L. Dekker and published by Elsevier. This book was released on 2013-10-22 with total page 996 pages. Available in PDF, EPUB and Kindle. Book excerpt: The contributions of a diverse selection of international hardware and software specialists are assimilated in this book's exploration of the development of massively parallel processing (MPP). The emphasis is placed on industrial applications and collaboration with users and suppliers from within the industrial community consolidates the scope of the publication. From a practical point of view, massively parallel data processing is a vital step to further innovation in all areas where large amounts of data must be processed in parallel or in a distributed manner, e.g. fluid dynamics, meteorology, seismics, molecular engineering, image processing, parallel data base processing. MPP technology can make the speed of computation higher and substantially reduce the computational costs. However, to achieve these features, the MPP software has to be developed further to create user-friendly programming systems and to become transparent for present-day computer software. Application of novel electro-optic components and devices is continuing and will be a key for much more general and powerful architectures. Vanishing of communication hardware limitations will result in the elimination of programming bottlenecks in parallel data processing. Standardization of the functional characteristics of a programming model of massively parallel computers will become established. Then efficient programming environments can be developed. The result will be a widespread use of massively parallel processing systems in many areas of application.
Author : Makan Pourzandi
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (49 download)
Download or read book Etude de l'impact des recouvrements calcul-communication sur des algorithmes parallèles de calcul matriciel written by Makan Pourzandi and published by . This book was released on 1995 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: DANS CETTE THESE, NOUS NOUS INTERESSONS AU PROBLEME DU RECOUVREMENT CALCUL/COMMUNICATION SUR LES ALGORITHMES PARALLELES ET CE QUE CETTE APPROCHE PEUT APPORTER A UNE AMELIORATION DES PERFORMANCES DES ALGORITHMES PARALLELES. LES CODES PARALLELES ONT SOUVENT ETE CONSIDERES COMME DES PHASES DE CALCUL ENTRECOUPEES DE PHASES DE COMMUNICATION. DANS CETTE PERSPECTIVE, TOUTE AMELIORATION DU CODE PASSAIT PAR LA DIMINUTION SEPAREE DU COUT DES COMMUNICATIONS OU DE CELUI DES CALCULS. NOUS ENTENDONS PAR UNE DIMINUTION SEPAREE QUE LES PROGRAMMEURS TRAVAILLAIENT SOIT UNIQUEMENT SUR LA PARTIE COMMUNICATIONS OU SOIT UNIQUEMENT SUR LA PARTIE CALCUL. DANS LA NOUVELLE GENERATION DE MACHINES PARALLELES, CHAQUE NUD POSSEDE UN PROCESSEUR DEDIE AUX COMMUNICATIONS. POUR POUVOIR BENEFICIER AU MAXIMUM DES POSSIBILITES DES MACHINES, IL CONVIENT DE POUVOIR UTILISER DE MANIERE SIMULTANEE LES PROCESSEURS DE CALCUL ET DE COMMUNICATION. LE RECOUVREMENT CALCUL/COMMUNICATION CONSISTE A UTILISER LE TEMPS DE CALCUL POUR EFFECTUER DES COMMUNICATIONS EN PARALLELE. CETTE APPROCHE NOUS PERMET DE MIEUX CONCEVOIR LES ALGORITHMES DANS LEUR ENSEMBLE, C'EST A DIRE AVEC LEURS PARTIES DE CALCUL ET LEURS PARTIES DE COMMUNICATION AFIN D'AMELIORER LA PERFORMANCE TOTALE. DANS CETTE THESE, NOUS MONTRONS LES AMELIORATIONS POSSIBLES SUR PLUSIEURS EXEMPLES D'ALGORITHMES PARALLELES: L'ELIMINATION DE GAUSS, LA MULTIPLICATION DE MATRICES ET LA METHODE DE JACOBI POUR LE CALCUL DES VALEURS PROPRES. AFIN D'UTILISER AU MAXIMUM LES CAPACITES DES MACHINES PARALLELES, NOUS EXPLORONS UNE NOUVELLE METHODE ALGORITHMIQUE POUR LE CALCUL DES VALEURS PROPRES QUI MALGRE SES FAIBLES PERFORMANCES SEQUENTIELLES EST TRES EFFICACE EN PARALLELE. NOUS VALIDONS CES METHODES D'OPTIMISATION ALGORITHMIQUE AVEC L'OPTIMISATION DE L'IMPLEMENTATION PARALLELE D'UNE APPLICATION DE SIMULATION DE LA DIFFUSION DE POLLUANTS
Author : Institute for Computer Applications in Science and Engineering
Publisher :
ISBN 13 :
Total Pages : 42 pages
Book Rating : 4.:/5 (317 download)
Download or read book On the Impact of Communication Complexity in the Design of Parallel Numerical Algorithms written by Institute for Computer Applications in Science and Engineering and published by . This book was released on 1984 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ljupco Kocarev
Publisher : Springer Science & Business Media
ISBN 13 : 9783540243052
Total Pages : 380 pages
Book Rating : 4.2/5 (43 download)
Download or read book Complex Dynamics in Communication Networks written by Ljupco Kocarev and published by Springer Science & Business Media. This book was released on 2005-06-13 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt: Computer and communication networks are among society's most important infrastructures. The internet, in particular, is a giant global network of networks without central control or administration. It is a paradigm of a complex system, where complexity may arise from different sources: topological structure, network evolution, connection and node diversity, or dynamical evolution. The present volume is the first book entirely devoted to the new and emerging field of nonlinear dynamics of TCP/IP networks. It addresses both scientists and engineers working in the general field of communication networks.
Author : Renaud Lepère
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (125 download)
Download or read book Approches algorithmiques pour l'ordonnancement d'applications parallèles avec communications written by Renaud Lepère and published by . This book was released on 2005 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cette thèse est consacrée à l'étude de l'ordonnancement des tâches d'un programme parallèle en premant en compte l'impact des communications. Sur les machines à mémoire distribuée telles que les grappes de PC, les temps de communications peuvent être importants. Les objectifs de cette thèse sont l'étude de modèles permettant de prendre en compte efficacement ces communications et l'étude des problèmes d'ordonnancement sous ces modèles. Nous nous sommes interessés au modèle à grand délai de communications qui est basé sur une prise en compte explicite des communications et au modèle des tâches malléables dans lequel les tâches sont elles-mêmes des activités parallèles pouvant s'exécuter sur un nombre variable de processeurs. Outre l'étude de la pertinance de ces modèles, les contributions obtenus vont dans les trois directions suivantes. Pour l'ordonnancement de tâches malléables avec contraintes de précédence nous avons proposé des algorithmes d'approximation constante (algorithmes polynômiaux offrant es garanties relativement à une solution optimale), pour le cas des arbres et pour le cas d'un graphe de précedence arbitraire. Une heuristique originale pour le problème du regroupement (ordonnancement sur un nombre non borné de processeurs) est proposée. Elle est basée sur une décomposition récursive du graphe de précédence et elle est validée par des simulations sur des graphes d'applications réelles. Enfin nous nous sommes interessés au problème d'ordonnancement sous le modèle à grand délai de communication en considérant la possibilité de dupliquer des tâches. Dans ce cadre nous avons obtenu un algorithme polynômial offrant une garantie logarithmique en fonction du délai de communication, améliorant ainsi la meilleure garantie connue (linéaire).
Author : Renaud Lepère
Publisher :
ISBN 13 :
Total Pages : 105 pages
Book Rating : 4.:/5 (491 download)
Download or read book Approches algorithmiques pour l'ordonnancement d'applications parallèles avec communications written by Renaud Lepère and published by . This book was released on 2001 with total page 105 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cette thèse est consacrée à l'étude de l'ordonnancement des tâches d'un programme parallèle en premant en compte l'impact des communications. Sur les machines à mémoire distribuée telles que les grappes de PC, les temps de communications peuvent être importants. Les objectifs de cette thèse sont l'étude de modèles permettant de prendre en compte efficacement ces communications et l'étude des problèmes d'ordonnancement sous ces modèles. Nous nous sommes interessés au modèle à grand délai de communications qui est basé sur une prise en compte explicite des communications et au modèle des tâches malléables dans lequel les tâches sont elles-mêmes des activités parallèles pouvant s'exécuter sur un nombre variable de processeurs. Outre l'étude de la pertinance de ces modèles, les contributions obtenus vont dans les trois directions suivantes. Pour l'ordonnancement de tâches malléables avec contraintes de précédence nous avons proposé des algorithmes d'approximation constante (algorithmes polynômiaux offrant es garanties relativement à une solution optimale), pour le cas des arbres et pour le cas d'un graphe de précedence arbitraire. Une heuristique originale pour le problème du regroupement (ordonnancement sur un nombre non borné de processeurs) est proposée. Elle est basée sur une décomposition récursive du graphe de précédence et elle est validée par des simulations sur des graphes d'applications réelles. Enfin nous nous sommes interessés au problème d'ordonnancement sous le modèle à grand délai de communication en considérant la possibilité de dupliquer des tâches. Dans ce cadre nous avons obtenu un algorithme polynômial offrant une garantie logarithmique en fonction du délai de communication, améliorant ainsi la meilleure garantie connue (linéaire).
Author : Rodolphe Giroudeau
Publisher :
ISBN 13 :
Total Pages : 111 pages
Book Rating : 4.:/5 (492 download)
Download or read book L'IMPACT DES DELAIS DE COMMUNICATIONS HIERARCHIQUES SUR LA COMPLEXITE ET L'APPROXIMATION DES PROBLEMES D'ORDONNANCEMENT written by Rodolphe Giroudeau and published by . This book was released on 2000 with total page 111 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'ORDONNANCEMENT DES TACHES RESTE UNE COMPOSANTE FONDAMENTALE DANS LE PROCESSUS DE TRAITEMENT D'UNE APPLICATION PARALLELE. NOUS AVONS ETENDU LE MODELE A COMMUNICATION HOMOGENES EN PRENANT EN COMPTE LA NOTION DE COMMUNICATIONS HIERARCHIQUES. CETTE EXTENSION A ETE MOTIVEE PAR L'APPARITION DES NOUVELLES ARCHITECTURES PARALLELES, COMME PAR EXEMPLE LES BI-PROCESSEURS CONNECTES PAR DES SWITCHES MYRINET, DES ARCHITECTURES POINT-A-POINT OU CHAQUE SOMMET DE LA TOPOLOGIE EST UN MODULE DE PROCESSEURS, OU DES ARCHITECTURES A BUS HIERARCHIQUES, OU LES COMMUNICATIONS ENTRE LES PROCESSEURS DU MEME MODULE S'EFFECTUENT PAR L'INTERMEDIAIRE DES BUS SECONDAIRES, TANDIS QUE LES COMMUNICATIONS ENTRE DEUX PROCESSEURS DE MODULES DIFFERENTS SE FONT PAR LE BUS PRINCIPAL. DANS CETTE THESE, NOUS AVONS MESURE L'IMPACT DES DELAIS DE COMMUNICATIONS HIERARCHIQUES SUR LA COMPLEXITE ET L'APPROXIMATION DES PROBLEMES D'ORDONNANCEMENT.
Author :
Publisher :
ISBN 13 :
Total Pages : 388 pages
Book Rating : 4.3/5 (91 download)
Download or read book Advances in Parallel Computing written by and published by . This book was released on 1990 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : E. Chiricozzi
Publisher : North Holland
ISBN 13 :
Total Pages : 520 pages
Book Rating : 4.3/5 (91 download)
Download or read book Parallel Processing and Applications written by E. Chiricozzi and published by North Holland. This book was released on 1988 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Mohammad Shahidehpour
Publisher : John Wiley & Sons
ISBN 13 : 0471462918
Total Pages : 557 pages
Book Rating : 4.4/5 (714 download)
Download or read book Communication and Control in Electric Power Systems written by Mohammad Shahidehpour and published by John Wiley & Sons. This book was released on 2004-07-22 with total page 557 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first extensive reference on these important techniques The restructuring of the electric utility industry has created the need for a mechanism that can effectively coordinate the various entities in a power market, enabling them to communicate efficiently and perform at an optimal level. Communication and Control in Electric Power Systems, the first resource to address its subject in an extended format, introduces parallel and distributed processing techniques as a compelling solution to this critical problem. Drawing on their years of experience in the industry, Mohammad Shahidehpour and Yaoyu Wang deliver comprehensive coverage of parallel and distributed processing techniques with a focus on power system optimization, control, and communication. The authors begin with theoretical background and an overview of the increasingly deregulated power market, then move quickly into the practical applications and implementations of these pivotal techniques. Chapters include: Integrated Control Center Information Parallel and Distributed Computation of Power Systems Common Information Model and Middleware for Integration Online Distributed Security Assessment and Control Integration, Control, and Operation of Distributed Generation Agent Theory and Power Systems Management e-Commerce of Electricity A ready resource for both students and practitioners, Communication and Control in Electric Power Systems proves an ideal textbook for first-year graduate students in power engineering with an interest in computer communication systems and control center design. Designers, operators, planners, and researchers will likewise appreciate its unique contribution to the professional literature.
Author : Heiner Stuckenschmidt
Publisher : Springer Science & Business Media
ISBN 13 : 9783540205944
Total Pages : 300 pages
Book Rating : 4.2/5 (59 download)
Download or read book Information Sharing on the Semantic Web written by Heiner Stuckenschmidt and published by Springer Science & Business Media. This book was released on 2005 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: The large-scale and almost ubiquitous availability of information has become as much of a curse as it is a blessing. The more information is available, the harder it is to locate any particular piece of it. And even when it has been successfully found, it is even harder still to usefully combine it with other information we may already possess. This problem occurs at many different levels, ranging from the overcrowded disks of our own PCs to the mass of unstructured information on the World Wide Web.It is commonly understood that this problem of information sharing can only be solved by giving computers better access to the semantics of the information. While it has been recognized that ontologies play a crucial role in solving the open problems, most approaches rely on the existence of well-established data structures. To overcome these shortcomings, Stuckenschmidt and van Harmelen describe ontology-based approaches for resolving semantic heterogeneity in weakly structured environments, in particular the World Wide Web. Addressing problems like missing conceptual models, unclear system boundaries, and heterogeneous representations, they design a framework for ontology-based information sharing in weakly structured environments like the Semantic Web.For researchers and students in areas related to the Semantic Web, the authors provide not only a comprehensive overview of the State of the art, but also present in detail recent research in areas like ontology design for information integration, metadata generation and management, and representation and management of distributed ontologies. For professionals in areas such as e-commerce (e.g., the exchange of product knowledge) and knowledge management (e.g., in large and distributed organizations), the book provides decision support on the use of novel technologies, information about potential problems, and guidelines for the successful application of existing technologies.
Author : Una-May O'Reilly
Publisher : Springer Science & Business Media
ISBN 13 : 0387232540
Total Pages : 330 pages
Book Rating : 4.3/5 (872 download)
Download or read book Genetic Programming Theory and Practice II written by Una-May O'Reilly and published by Springer Science & Business Media. This book was released on 2006-03-16 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: The work described in this book was first presented at the Second Workshop on Genetic Programming, Theory and Practice, organized by the Center for the Study of Complex Systems at the University of Michigan, Ann Arbor, 13-15 May 2004. The goal of this workshop series is to promote the exchange of research results and ideas between those who focus on Genetic Programming (GP) theory and those who focus on the application of GP to various re- world problems. In order to facilitate these interactions, the number of talks and participants was small and the time for discussion was large. Further, participants were asked to review each other's chapters before the workshop. Those reviewer comments, as well as discussion at the workshop, are reflected in the chapters presented in this book. Additional information about the workshop, addendums to chapters, and a site for continuing discussions by participants and by others can be found at http://cscs.umich.edu:8000/GPTP-20041. We thank all the workshop participants for making the workshop an exciting and productive three days. In particular we thank all the authors, without whose hard work and creative talents, neither the workshop nor the book would be possible. We also thank our keynote speakers Lawrence ("Dave") Davis of NuTech Solutions, Inc., Jordan Pollack of Brandeis University, and Richard Lenski of Michigan State University, who delivered three thought-provoking speeches that inspired a great deal of discussion among the participants.
Author : Jörg Rothe
Publisher : Springer Science & Business Media
ISBN 13 : 3540221476
Total Pages : 488 pages
Book Rating : 4.5/5 (42 download)
Download or read book Complexity Theory and Cryptology written by Jörg Rothe and published by Springer Science & Business Media. This book was released on 2005-07-22 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modern cryptology increasingly employs mathematically rigorous concepts and methods from complexity theory. Conversely, current research topics in complexity theory are often motivated by questions and problems from cryptology. This book takes account of this situation, and therefore its subject is what may be dubbed "cryptocomplexity'', a kind of symbiosis of these two areas. This book is written for undergraduate and graduate students of computer science, mathematics, and engineering, and can be used for courses on complexity theory and cryptology, preferably by stressing their interrelation. Moreover, it may serve as a valuable source for researchers, teachers, and practitioners working in these fields. Starting from scratch, it works its way to the frontiers of current research in these fields and provides a detailed overview of their history and their current research topics and challenges.
Author : Yan Zhang
Publisher : CRC Press
ISBN 13 : 1420064703
Total Pages : 518 pages
Book Rating : 4.4/5 (2 download)
Download or read book Cooperative Wireless Communications written by Yan Zhang and published by CRC Press. This book was released on 2009-03-10 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cooperative devices and mechanisms are increasingly important to enhance the performance of wireless communications and networks, with their ability to decrease power consumption and packet loss rate and increase system capacity, computation, and network resilience. Considering the wide range of applications, strategies, and benefits associated wit
Author : Cecil C. Konijnendijk
Publisher : Springer Science & Business Media
ISBN 13 : 354027684X
Total Pages : 525 pages
Book Rating : 4.5/5 (42 download)
Download or read book Urban Forests and Trees written by Cecil C. Konijnendijk and published by Springer Science & Business Media. This book was released on 2005-12-16 with total page 525 pages. Available in PDF, EPUB and Kindle. Book excerpt: This multidisciplinary book covers all aspects of planning, designing, establishing and managing forests and trees and forests in and near urban areas, with chapters by experts in forestry, horticulture, landscape ecology, landscape architecture and even plant pathology. Beginning with historical and conceptual basics, the coverage includes policy, design, implementation and management of forestry for urban populations.
Author : Krishna M. Sivalingam
Publisher : Springer
ISBN 13 : 0387225846
Total Pages : 449 pages
Book Rating : 4.3/5 (872 download)
Download or read book Emerging Optical Network Technologies written by Krishna M. Sivalingam and published by Springer. This book was released on 2006-01-16 with total page 449 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optical networks have moved from laboratory settings and theoretical research to real-world deployment and service-oriented explorations. New technologies such as Ethernet PON, traffic grooming, regional and metropolitan network architectures and optical packet switching are being explored, and the landscape is continuously and rapidly evolving. Some of the important issues involving these new technologies involve the architectural, protocol, and performance related issues. This book addresses many of these issues and presents a birds eye view of some of the more promising technologies. Researchers and those pursuing advanced degrees in this field will be able to see where progress is being made and new technologies are emerging. Emerging Optical Network Technologies: Architectures, Protocols and Performance provides state-of-the-art material written by the most prominent professionals in their respective areas.
