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首页> 外文期刊>Progress in Artificial Intelligence >NoCGuard: A Reliable Network-on-Chip Router Architecture
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NoCGuard: A Reliable Network-on-Chip Router Architecture

机译：NOCGUARD：可靠的片上路由器架构

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摘要

Aggressive scaling in deep nanometer technology enables chip multiprocessor design facilitated by the communication-centric architecture provided by Network-on-Chip (NoC). At the same time, it brings considerable challenges in reliability because a fault in the network architecture severely impacts the performance of a system. To deal with these reliability challenges, this research proposed NoCGuard, a reconfigurable architecture designed to tolerate multiple permanent faults in each pipeline stage of the generic router. NoCGuard router architecture uses four highly reliable and low-cost fault-tolerant strategies. We exploited resource borrowing and double routing strategy for the routing computation stage, default winner strategy for the virtual channel allocation stage, runtime arbiter selection and default winner strategy for the switch allocation stage and multiple secondary bypass paths strategy for the crossbar stage. Unlike existing reliable router architectures, our architecture features less redundancy, more fault tolerance, and high reliability. Reliability comparison using Mean Time to Failure (MTTF) metric shows 5.53-time improvement in a lifetime and using Silicon Protection Factor (SPF), 22-time improvement, which is better than state-of-the-art reliable router architectures. Synthesis results using 15 nm and 45 nm technology library show that additional circuitry incurs an area overhead of 28.7% and 28% respectively. Latency analysis using synthetic, PARSEC and SPLASH-2 traffic shows minor increase in performance by 3.41%, 12% and 15% respectively while providing high reliability.
机译：深度纳米技术中的积极缩放使得通过网络上网（NOC）提供的通信中心架构促进了芯片多处理器设计。与此同时，它带来了可靠性的相当大挑战，因为网络架构中的故障严重影响了系统的性能。为了处理这些可靠性挑战，这项研究提出了一种可重构的架构，该可重构架构旨在容忍通用路由器的每个流水线级中的多个永久性故障。 NocGuard Router架构使用四种高度可靠和低成本的容错策略。我们利用了路由计算阶段的资源借用和双路由策略，虚拟通道分配阶段的默认获奖者策略，运行时仲裁器选择和交换机分配阶段的默认获奖者策略以及交叉级级的多个辅助旁路路径策略。与现有可靠的路由器架构不同，我们的架构具有较少的冗余，更容错的公差和高可靠性。使用平均故障（MTTF）度量的可靠性比较显示了5.53级改进的一生，并使用硅保护系数（SPF），22次改进，优于最先进的可靠路由器架构。使用15nm和45nm技术库的合成结果表明，额外的电路分别引起28.7％和28％的面积开销。使用合成素，PARSEC和Splash-2流量的延迟分析显示出的性能轻微增加3.41％，12％和15％，同时提供高可靠性。

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