Download or read book A Parallel Virtual Queue Structure for Active Queue Management written by and published by . This book was released on 2003 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Adaptive RED proposed by Feng et al. is shown to have small packet delay and queue length variation for long-life TCP traffic such as FTP connection with a large file size. However, a great portion of Internet traffic is shortlife web and UDP traffic. Most web traffic has a small file size and its TCP session is mainly operated in the slow start phase with a small congestion window size. Since the file size is small, dropping short-life TCP (and UDP) packets is not very effective in alleviating congestion level at a bottleneck router. From the viewpoint of TCP, one or several packet losses in its slow start phase lead to extra delay for retransmission and even cause TCP timeout. This delay severely degrades the performance of delivering short messages such as web pages and web browsers experience a long waiting time even with a high speed network. We first show that the Adaptive RED is vulnerable to these shortlife TCP traffic and propose a virtual parallel queue structure as a new active queue management scheme (AQM). The idea is to separate the long-life and short-life (including UDP) traffic into two different virtual queues. The first queue is to run the droptail policy and work for the short-life TCP and UDP packets. In order to have a small mean delay, the service rate of this drop-tail queue is dynamically determined by its virtual queue length. The remaining long-life traffic is directed to an Adaptive RED virtual queue. Even the available bandwidth is shared with the drop-tail queue, the simulation results show that the queue length variation of the RED queue is still located in a desired region. Note that both virtual queues share the same physical buffer memory. Those packets in the drop-tail queue will not be dropped unless the shared buffer is overflowed. This parallel virtual queue structure not only keeps the benefits of RED such as high utilization and small delay, but also greatly reduces the packet loss rate at the router.
Download or read book Multifractal Internet Traffic Model and Active Queue Management written by and published by . This book was released on 2003 with total page 189 pages. Available in PDF, EPUB and Kindle. Book excerpt: We propose a multilevel (hierarchical) ON/OFF model to simultaneously capture the mono/multifractal behavior of Internet traffic. Parameter estimation methods are developed and applied to estimate the model parameters from real traces. Wavelet analysis and simulation results show that the synthetic traffic (using this new model with estimated parameters) and real traffic share the same statistical properties and queuing behaviors. Based on this model and its statistical properties, as described by the Logscale diagram of traces, we propose an efficient method to predict the queuing behavior of FIFO and RED queues. In order to satisfy a given delay and jitter requirement for real time connections, and to provide high goodput and low packet loss for non-real time connections, we also propose a parallel virtual queue control structure to offer differential quality of services. This new queue control structure is modeled and analyzed as a regular nonlinear dynamic system. The conditions for system stability and optimization are found (under certain simplifying assumptions) and discussed. The theoretical stationary distribution of queue length is validated by simulation.
Download or read book Advances in Information Systems written by Tatyana Yakhno and published by Springer. This book was released on 2004-10-19 with total page 630 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the proceedings of the 3rd International Conference on AdvancesinInformationSystems(ADVIS)heldinIzmir,Turkey,20–22October, 2004. This was the third conference dedicated to the memory of Prof. Esen Ozkarahan. We are very proud to continue this tradition and keep the memory of this outstanding scientist. The third conference covered many of the topics of the second one: databases and data warehouses, information systems development and management, - formation retrieval, distributed and parallel data processing, and evolutionary algorithms. Besides them some of the hot topics related to information systems were included in the scope of this conference, such as data mining and kno- edge discovery, Web information systems development, information privacy and security, multimedia information systems, and network management. This year we received 203 submissions from which the Program Committee selected 61 papers for presentation at the conference. The success of the conference was dependent upon the hard work of a large number of people. We gratefully acknowledge the contribution of the members of the Program Committee who did their best to review all submitted papers. We also thank all the specialists who helped us in reviewing the papers. We appreciated the constant support and help from the Rector of Dokuz Eylul University, Prof. Dr. Emin Alici. I would like to express my personal gratitude to Natalya Cheremnykh and Olga Drobyshevich for their help in producing the camera-ready version of these proceedings.
Download or read book Self Similar Processes in Telecommunications written by Oleg Sheluhin and published by John Wiley & Sons. This book was released on 2007-03-13 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: For the first time the problems of voice services self-similarity are discussed systematically and in detail with specific examples and illustrations. Self-Similar Processes in Telecommunications considers the self-similar (fractal and multifractal) models of telecommunication traffic and efficiency based on the assumption that its traffic has fractal or multifractal properties (is self-similar). The theoretical aspects of the most well-known traffic models demonstrating self-similar properties are discussed in detail and the comparative analysis of the different models’ efficiency for self-similar traffic is presented. This book demonstrates how to use self-similar processes for designing new telecommunications systems and optimizing existing networks so as to achieve maximum efficiency and serviceability. The approach is rooted in theory, describing the algorithms (the logical arithmetical or computational procedures that define how a task is performed) for modeling these self-similar processes. However, the language and ideas are essentially accessible for those who have a general knowledge of the subject area and the advice is highly practical: all models, problems and solutions are illustrated throughout using numerous real-world examples. Adopts a detailed, theoretical, yet broad-based and practical mathematical approach for designing and operating numerous types of telecommunications systems and networks so as to achieve maximum efficiency Places the subject in context, describing the current algorithms that make up the fractal or self-similar processes while pointing to the future development of the technology Offers a comparative analysis of the different types of self-similar process usage within the context of local area networks, wide area networks and in the modeling of video traffic and mobile communications networks Describes how mathematical models are used as a basis for building numerous types of network, including voice, audio, data, video, multimedia services and IP (Internet Protocol) telephony The book will appeal to the wide range of specialists dealing with the design and exploitation of telecommunication systems. It will be useful for the post-graduate students, lecturers and researchers connected with communication networks disciplines.
Download or read book Twenty fourth AIAA International Communication Satellite Systems Conference written by and published by . This book was released on 2006 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Accelerating Network Functions Using Reconfigurable Hardware written by Ralf Kundel and published by Springer Nature. This book was released on with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Virtual Queue Management System written by M. N. Ndungu and published by . This book was released on 2018-11-02 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advances in Information Systems written by and published by . This book was released on 2004 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book OpenMP Shared Memory Parallel Programming written by Michael J. Voss and published by Springer. This book was released on 2007-03-05 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: The refereed proceedings of the International Workshop on OpenMP Applications and Tools, WOMPAT 2003, held in Toronto, Canada in June 2003. The 20 revised full papers presented were carefully reviewed and selected for inclusion in the book. The papers are organized in sections on tools and tool technology, OpenMP implementations, OpenMP experience, and OpenMP on clusters.
Download or read book Parallel Computation written by Jens Volkert and published by Springer Science & Business Media. This book was released on 1993-09-27 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Austrian Center for Parallel Computation (ACPC) is a cooperative research organization founded in 1989 to promote research and education in the field of software for parallel computer systems. The areas in which the ACPC is active include algorithms, languages, compilers, programming environments, and applications for parallel and high-performance computing systems. This volume contains the proceedings of the Second International Conference of the ACPC, held in Gmunden, Austria, October 1993. Authors from 17 countries submitted 44 papers, of which 15 were selected for inclusion in this volume, which also includes 4 invited papers by distinguished researchers. The volume is organized into parts on architectures (2 papers), algorithms (7 papers), languages (6 papers), and programming environments (4 papers).
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2008 with total page 868 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Parallel Virtual Machine EuroPVM 96 written by Arndt Bode and published by Springer Science & Business Media. This book was released on 1996-09-25 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the Third European Conference on the Parallel Virtual Machine, EuroPVM '96, the 1996 European PVM users' group meeting, held in Munich, Germany, in October 1996. The parallel virtual machine, PVM, was developed at the University of Tennessee and Oak Ridge National Laboratory in cooperation with Emory University and Carnegie Mellon University to support distributed computing. This volume comprises 51 revised full contributions devoted to PVM. The papers are organized in topical sections on evaluation of PVM; Applications: CFD solvers; tools for PVM; non-numerical applications; extensions to PVM; etc.
Download or read book Active Networks and Active Network Management written by Stephen F. Bush and published by Springer Science & Business Media. This book was released on 2006-04-11 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: Active networking is an exciting new paradigm in digital networking that has the potential to revolutionize the manner in which communication takes place. It is an emerging technology, one in which new ideas are constantly being formulated and new topics of research are springing up even as this book is being written. This technology is very likely to appeal to a broad spectrum of users from academia and industry. Therefore, this book was written in a way that enables all these groups to understand the impact of active networking in their sphere of interest. Information services managers, network administrators, and e-commerce developers would like to know the potential benefits of the new technology to their businesses, networks, and applications. The book introduces the basic active networking paradigm and its potential impacts on the future of information handling in general and on communications in particular. This is useful for forward-looking businesses that wish to actively participate in the development of active networks and ensure a head start in the integration of the technology in their future products, be they applications or networks. Areas in which active networking is likely to make significant impact are identified, and the reader is pointed to any related ongoing research efforts in the area. The book also provides a deeper insight into the active networking model for students and researchers, who seek challenging topics that define or extend frontiers of the technology. It describes basic components of the model, explains some of the terms used by the active networking community, and provides the reader with taxonomy of the research being conducted at the time this book was written. Current efforts are classified based on typical research areas such as mobility, security, and management. The intent is to introduce the serious reader to the background regarding some of the models adopted by the community, to outline outstanding issues concerning active networking, and to provide a snapshot of the fast-changing landscape in active networking research. Management is a very important issue in active networks because of its open nature. The latter half of the book explains the architectural concepts of a model for managing active networks and the motivation for a reference model that addresses limitations of the current network management framework by leveraging the powerful features of active networking to develop an integrated framework. It also describes a novel application enabled by active network technology called the Active Virtual Network Management Prediction (AVNMP) algorithm. AVNMP is a pro-active management system; in other words, it provides the ability to solve a potential problem before it impacts the system by modeling network devices within the network itself and running that model ahead of real time.
Download or read book Recent Advances in Parallel Virtual Machine and Message Passing Interface written by Dieter Kranzlmüller and published by Springer. This book was released on 2003-08-02 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the 9th European PVM/MPI Users'Group Meeting held in Linz, Austria in September/October 2002. The 50 revised full papers presented together with abstracts of 11 invited contributions were carefully reviewed and selected. The papers are organized in topical sections on Corss Grid, Par Sim, application using MPI and PVM, parallel algorithms using message passing, programming tools for MPI and PVM, implementations of MPI and PVM, extensions of MPI and PVM, and performance analysis and optimization.
Download or read book Frontiers in Internet Technologies written by Jinshu Su and published by Springer. This book was released on 2013-12-13 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the Second CCF Internet Conference of China, ICoC 2013, held in Zhangjiajie, China, in July 2013. The 24 revised full papers presented were carefully reviewed and selected from 63 submissions. The papers address issues such as future Internet architecture, Internet routing, network security, network management, data center networks, green networks, wireless networks, P2P networks, mobile Internet and the Internet of Things.
Download or read book Parallel Computer Architecture written by David Culler and published by Gulf Professional Publishing. This book was released on 1999 with total page 1056 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book outlines a set of issues that are critical to all of parallel architecture--communication latency, communication bandwidth, and coordination of cooperative work (across modern designs). It describes the set of techniques available in hardware and in software to address each issues and explore how the various techniques interact.
Download or read book Thirteenth Workshop on Parallel and Distributed Simulation written by Richard M. Fujimoto and published by Institute of Electrical & Electronics Engineers(IEEE). This book was released on 1999 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of a May 1999 workshop, with papers on conservative simulation techniques, scheduling and synchronization, future directions, defense simulation and DIS, optimistic simulation techniques, performance prediction and analysis, and simulation and computer networks. Topics include efficient parallel simulation using reverse computation, performance prediction tools for parallel discrete-event simulation, Time Warp simulation on clumps, and active network management protocol. No index. Annotation copyrighted by Book News, Inc., Portland, OR.
