面向高性能计算机的光交换阵列体系结构研究

发布时间：2018-12-17 04:49

【摘要】：随着高性能计算机的不断发展，，互连网络对于计算机整体性能的提升越来越重要。传统的电互连网络存在着带宽小、延迟大、互联密度小等不足，已经无法满足对互连网络性能的需求，成为制约高性能计算机性能提高的瓶颈，需要一种新的互连方式来解决。光互连作为一种新的互连方式，具有许多优势，如高度的并行性，抗干扰能力强，高带宽低功耗等。光互连的应用已经被人们所认可，关于光互连相关技术的研究也在不断发展进步。光互连网络中控制光传输路径的核心单元是光交换阵列，目前对于光交换阵列的设计分析都是基于相应的网络结构，路由算法，而对于光交换阵列本身的研究还不充分，尤其在设计方法上，缺少通用的光交换阵列设计方法来适应不同的网络结构。本文针对上面提到的问题，对光交换阵列的应用环境，不同功能的光交换阵列等进行了分析，主要完成以下几个方面的工作： 1设计了一种和Crossbar结构一样能够实现完整互连特性的光交换阵列结构CCOS（Completely-Connected Optical Switch），大幅降低了各项硬件开销及插入损耗，并从理论和实验两个方面进行了论证； 2将CCOS光交换阵列扩展成为N×N规模，并对其完整互连的性质给出证明，还研究了不同规模下的光交换阵列所花费硬件开销的最小值，对光交换阵列的优化设计提供了标准和理论依据，为进一步扩展实现较大规模的网络结构提供了基础； 3对不同功能需求的光交换阵列特点进行分析，特别区分了N×N完整互连与N端口全互连的光交换阵列，并从现有的结构出发，分析不同阵列结构的设计，提出基于不同网络需求的较为通用的光交换阵列设计方法；对于光交换阵列性能的提高以及新型网络拓扑结构的搭建有着积极意义。
[Abstract]:With the development of high performance computer, interconnection network is becoming more and more important to improve the overall performance of computer. The traditional electrical interconnection network has some disadvantages, such as small bandwidth, large delay, low interconnection density and so on. It can not meet the demand for the performance of interconnection network and has become the bottleneck restricting the improvement of the performance of high performance computer. It needs a new interconnection method to solve the problem. As a new interconnection mode, optical interconnection has many advantages, such as high parallelism, strong anti-jamming ability, high bandwidth and low power consumption. The application of optical interconnection has been recognized by people. The core unit of optical transmission path control in optical interconnection network is optical switching array. At present, the design and analysis of optical switching array are based on the corresponding network structure, routing algorithm, but the research on optical switching array itself is not enough. Especially in the design method, there is a lack of general optical switch array design method to adapt to different network structure. In this paper, the application environment of optical switching array and optical switching array with different functions are analyzed. The main work of this paper is as follows: 1 an optical switching array (CCOS) structure, which can realize the complete interconnection characteristics as Crossbar architecture, is designed. (Completely-Connected Optical Switch), greatly reduces the hardware overhead and insertion loss. And from the theoretical and experimental two aspects of the argument; (2) the CCOS optical switching array is extended to N 脳 N scale, and the properties of its complete interconnection are proved. The minimum hardware cost of the optical switching array with different scales is also studied. It provides the standard and theoretical basis for the optimization design of optical switching array, and provides the basis for further expanding and realizing the larger network structure. (3) the characteristics of optical switching arrays with different functional requirements are analyzed, especially the optical switching arrays with N 脳 N complete interconnection and N port complete interconnection are distinguished, and the design of different array structures is analyzed based on the existing structures. A general optical switching array design method based on different network requirements is proposed. It is of great significance to improve the performance of optical switching arrays and to build new network topology.
【学位授予单位】：国防科学技术大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TP38

【参考文献】