CAREER: Optically-Interconnected Fully-Adaptive Network Router

职业：光互连全自适应网络路由器

• 批准号: 9624251
• 负责人: Timothy Pinkston
• 金额: $ 27.5万
• 依托单位: University of Southern California
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-07-01 至 2001-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9624251&HistoricalAwards=false
• 关键词: CAREER; Optically; Interconnected; Fully; Adaptive

9624251 Pinkston The precursor to building general-purpose teraflop computer systems is the advancement of network technology to reach much higher levels of performance. In parallel processor systems, where multiple high performance processors work cooperatively as one connected unit, performance is determined by the effective utilization of processor nodes which, predominately, depends upon communication efficiency. The backbone for communication in parallel processing environments is the interconnection network. We propose to design and implement in a hybrid GaAs/silicon chip a flexible fully-adaptive deadlock-free optical network router featuring a new packet routing algorithm universally applicable to any network topology. This proposed research serves to further advance the state-of-the-art in interconnection network technology by exploring hardware-based solutions for increasing parallel processor communication efficiency. This work leverages ofd of current trends in interconnection network router architecture and continuing advancements in optical/photonic technology. Our proposed optical router provides a flexible framework for exploring many design alternatives never before imagined due to its high degree of resource decoupling and topological independence. Interesting issues to be investigated in the building of the router include how to accurately detect deadlock, how to efficiently implement the deadlockfree recovery lane, how to implement low overhead internal and external flow control for optical interconnects, and how to integrate optical transmitters, optical receivers. and complex electronic router logic circuitry onto a single optoelectronic VLSI router chip. Interesting issues that can be further understood once the router is built include the performance and/or fault tolerance advantages of fully adaptive wormhole routing, misrouting capability, the use of the DB resource for not only recovering from potential deadlocks but also for relieving n ormal network congestion, and the use of dense high bandwidth optical I/O for fully adaptive network routers. We will systematically address these and other important issues as we go about designing, building, and experimenting with this novel network router. This research adds significantly to optical interconnect/photonic switching infrastructure. This work is pioneering in that, to our knowledge, we are the first to propose research that encompasses advanced switching, flow control, and routing functionality in optical interconnection network design. The principal investigator will lead a dedicated research team ranging in research experience consisting of undergraduate, graduate. and post-graduate collaborative researchers. Moreover, important research achievements will find use in the classroom to serve as excellent illustrations in teaching. Hence, we will demonstrate that current and next-generation interconnection network techniques such as wormhole switching, virtual channel flow, and adaptive routing are feasibly incorporated in optically-based interconnection networks. This will provide a platform on which to build optically interconnected parallel processing systems, impacting the applicability of this technology to future systems. ***

9624251 Pinkston 构建通用万亿次浮点运算计算机系统的先驱是网络技术的进步，以达到更高的性能水平。在并行处理器系统中，多个高性能处理器作为一个连接单元协同工作，性能由处理器节点的有效利用率决定，而处理器节点的有效利用率主要取决于通信效率。并行处理环境中通信的支柱是互连网络。我们建议在混合 GaAs/硅芯片中设计和实现一种灵活的完全自适应无死锁光网络路由器，该路由器具有普遍适用于任何网络拓扑的新数据包路由算法。这项研究旨在通过探索基于硬件的解决方案来提高并行处理器通信效率，从而进一步推进最先进的互连网络技术。这项工作利用了互连网络路由器架构的当前趋势以及光学/光子技术的持续进步。 我们提出的光路由器提供了一个灵活的框架，用于探索许多以前从未想象过的设计替代方案，因为它具有高度的资源解耦和拓扑独立性。路由器构建中需要研究的有趣问题包括如何准确检测死锁、如何高效实现无死锁恢复通道、如何实现光互连的低开销内部和外部流量控制以及如何集成光发送器、光接收器。和复杂的电子路由器逻辑电路到单个光电 VLSI 路由器芯片上。路由器建成后可以进一步理解的有趣问题包括完全自适应虫洞路由的性能和/或容错优势、误路由能力、使用数据库资源不仅可以从潜在的死锁中恢复，还可以缓解正常的网络拥塞，以及完全自适应网络路由器使用密集的高带宽光纤 I/O。在设计、构建和试验这款新型网络路由器时，我们将系统地解决这些问题和其他重要问题。 这项研究显着增强了光学互连/光子交换基础设施。据我们所知，这项工作具有开创性，因为我们是第一个提出涵盖光互连网络设计中的高级交换、流量控制和路由功能的研究。首席研究员将领导一个由本科生、研究生组成的具有研究经验的专门研究团队。和研究生合作研究人员。此外，重要的研究成果将在课堂上得到运用，成为教学的优秀例证。因此，我们将证明当前和下一代互连网络技术（例如虫洞交换、虚拟通道流和自适应路由）可以切实地融入基于光学的互连网络中。这将提供一个构建光学互连并行处理系统的平台，影响该技术在未来系统中的适用性。 ***