EBookClubs

Read Books & Download eBooks Full Online

EBookClubs

Read Books & Download eBooks Full Online

Book Modeling and Synthesis of Multicomputer Interconnection Networks

Download or read book Modeling and Synthesis of Multicomputer Interconnection Networks written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2018-12-29 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: The type of interconnection network employed has a profound effect on the performance of a multicomputer and multiprocessor design. Adequate models are needed to aid in the design and development of interconnection networks. A novel modeling approach using statistical and optimization techniques is described. This method represents an attempt to compare diverse interconnection network designs in a way that allows not only the best of existing designs to be identified but to suggest other, perhaps hybrid, networks that may offer better performance. Stepwise linear regression is used to develop a polynomial surface representation of performance in a (k+1) space with a total of k quantitative and qualitative independent variables describing graph-theoretic characteristics such as size, average degree, diameter, radius, girth, node-connectivity, edge-connectivity, minimum dominating set size, and maximum number of prime node and edge cutsets. Dependent variables used to measure performance are average message delay and the ratio of message completion rate to network connection cost. Response Surface Methodology (RSM) optimizes a response variable from a polynomial function of several independent variables. Steepest ascent path may also be used to approach optimum points. Standley, Hilda M. and Auxter, D. Steve NASA-CR-186619, NAS 1.26:186619 NAG3-699...

Book Interconnection Networks

Download or read book Interconnection Networks written by Jose Duato and published by Morgan Kaufmann. This book was released on 2003 with total page 626 pages. Available in PDF, EPUB and Kindle. Book excerpt: Foreword -- Foreword to the First Printing -- Preface -- Chapter 1 -- Introduction -- Chapter 2 -- Message Switching Layer -- Chapter 3 -- Deadlock, Livelock, and Starvation -- Chapter 4 -- Routing Algorithms -- Chapter 5 -- CollectiveCommunicationSupport -- Chapter 6 -- Fault-Tolerant Routing -- Chapter 7 -- Network Architectures -- Chapter 8 -- Messaging Layer Software -- Chapter 9 -- Performance Evaluation -- Appendix A -- Formal Definitions for Deadlock Avoidance -- Appendix B -- Acronyms -- References -- Index.

Book Scientific and Technical Aerospace Reports

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Interconnection Networks Synthesis and Optimization

Download or read book Interconnection Networks Synthesis and Optimization written by Yi Zhu and published by . This book was released on 2008 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: The advent of new technologies brings revolutions in the fields of VLSI design and high performance computing. On one hand, the increasing number of processing elements, both in on-chip multi-core systems and supercomputer systems, demands high bandwidth communications. On the other hand, the performance of the system, usually measured by the latency and power consumption, is gradually being dominated by the interconnection networks. These facts raise challenges in synthesizing and optimizing interconnection networks. In this dissertation, we study methodologies and algorithms to perform the interconnection network synthesis and optimization in both on-chip networks and supercomputer systems. We explore a wide range of network topologies and physical implementations, and evaluate the performance of multi-commodity flow (MCF) algorithms. We design efficient approximation schemes to solve different variations of MCF problems, which incorporate different practical constraints. The automated design flows discover much larger design space than the traditional methods and therefore achieve promising results. In the study of Network-on-Chip (NoC), we are optimizing the communication latency and power consumption, which are two competing design objectives. With an improved fully polynomial approximation algorithm, power optimal design of a structured 8x8 NoC can be found for given average latency constraints with certain communication bandwidth requirements. Our methodology explores a large number of topologies, introduces a variety of wire styles into NoC design, and incorporates latency constraints and power minimization objectives into a unified MCF model, with simultaneous optimization on network topologies, physical embedding, and interconnect wire styles. The results demonstrate the strengths of the optimized networks and indicate the clear trend of power and latency tradeoffs. In the synthesis and optimization of networks in supercomputer systems, we use the packaging framework of the Blue Gene/L supercomputer as an example to demonstrate the advantages of our design flow, which has incorporated real design issues, such as board dimensions and pin numbers. Using real benchmark traces, the experiments show that the best topologies identified by our algorithm can achieve better average latency compared to the existing 3-dimensional torus networks.

Book Interconnection Networks for Multiprocessors and Multicomputers

Download or read book Interconnection Networks for Multiprocessors and Multicomputers written by Anujan Varma and published by . This book was released on 1994 with total page 598 pages. Available in PDF, EPUB and Kindle. Book excerpt: Computer Systems Organization -- Computer-Communication Networks.

Book Computer Architecture Evaluation for Structural Dynamics Computations

Download or read book Computer Architecture Evaluation for Structural Dynamics Computations written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-08-16 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: The intent of the proposed effort is the examination of the impact of the elements of parallel architectures on the performance realized in a parallel computation. To this end, three major projects are developed: a language for the expression of high level parallelism, a statistical technique for the synthesis of multicomputer interconnection networks based upon performance prediction, and a queueing model for the analysis of shared memory hierarchies. Standley, Hilda M. Unspecified Center NASA-CR-186137, NAS 1.26:186137 NAG3-699...

Book Interconnection Networks for Multiprocessor and Multicomputers

Download or read book Interconnection Networks for Multiprocessor and Multicomputers written by Anujan Varma and published by . This book was released on 1994 with total page 571 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Monthly Catalogue United States Public Documents

Download or read book Monthly Catalogue United States Public Documents written by and published by . This book was released on 1994 with total page 1064 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Performance Modelling and Evaluation of Heterogeneous Wired

Download or read book Performance Modelling and Evaluation of Heterogeneous Wired written by W. U. Yulei and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Computer networks can be classified into two broad categories: wired networks and wireless networks, according to the hardware and software technologies used to interconnect the individual devices. Wired interconnection networks are hardware fabrics supporting communications between individual processors in highperformance computing systems (e.g., multi-computer systems and cluster systems). On the other hand, due to the rapid development of wireless technologies, wireless networks have emerged and become an indispensable part for people's lives. The integration of different wireless technologies is an effective approach to accommodate the increasing demand of the users to communicate with each other and access the Internet. This thesis aims to investigate the performance of wired interconnection networks and integrated wireless networks under the realistic working conditions. Traffic patterns have a significant impact on network performance. A number of recent measurement studies have convincingly demonstrated that the traffic generated by many real-world applications in communication networks exhibits bursty arrival nature and the message destinations are non-uniformly distributed. Analytical models for the performance evaluation of wired interconnection networks and integrated wireless networks have been widely reported. However, most of these models are developed under the simplified assumption of non-bursty Poisson process with uniformly distributed message destinations. To fill this gap, this thesis first presents an analytical model to investigate the performance of wired interconnection networks in multi-computer systems. Secondly, the analytical models for wired interconnection networks in multi-cluster systems are developed. Finally, this thesis proposes analytical models to evaluate the end-to-end delay and throughput of integrated wireless local area networks and wireless mesh networks. These models are derived when the networks are subject to bursty traffic with non-uniformly distributed message destinations which can capture the burstiness of real-world network traffic in the both temporal domain and spatial domain. Extensive simulation experiments are conducted to validate the accuracy of the analytical models. The models are then used as practical and cost-effective tools to investigate the performance of heterogeneous wired or wireless networks under the traffic patterns exhibited by real-world applications.

Book Interconnection Networks Performance Modelling for Multi core Multi cluster Architecture

Download or read book Interconnection Networks Performance Modelling for Multi core Multi cluster Architecture written by Norhazlina Hamid and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Bibliography of Lewis Research Center Technical Publications Announced in 1990

Download or read book Bibliography of Lewis Research Center Technical Publications Announced in 1990 written by and published by . This book was released on 1991 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt: