The performance of on-chip communication in the state-of-the-art multi-core processors that use the traditional electron-ic NoCs has already become severely energy-constrained. To that end, emerging photonic NoCs (PNoC) are seen as a po-tential solution to improve the energy-efficiency (performance per watt) of on-chip communication. However, existing PNoC designs cannot realize their full potential due to their exces-sive laser power consumption. Prior works that attempt to improve laser power efficiency in PNoCs do not consider all key factors that affect the laser power requirement of PNoCs. Therefore, they cannot yield the desired balance between the reduction in laser power, achieved performance and energy-efficiency in PNoCs. In this paper, we present PROTEUS framework that employs rule-based self-adaptation in PNoCs. Our approach not only reduces the laser power consumption, but also minimizes the average packet latency by opportunis-tically increasing the communication data rate in PNoCs, and thus, yields the desired balance between the laser power re-duction, performance, and energy-efficiency in PNoCs. Our evaluation with PARSEC benchmarks shows that our PROTEUS framework can achieve up to 24.5% less laser power consumption, up to 31% less average packet latency, and up to 20% less energy-per-bit, compared to another laser power management technique from prior work.

中文翻译：

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PROTEUS：基于规则的光子 NoC 自适应，用于激光功率和性能的损耗感知协同管理

使用传统电子 ic NoC 的最先进多核处理器中的片上通信性能已经受到严重的能量限制。为此，新兴的光子 NoC (PNoC) 被视为提高片上通信能效（每瓦性能）的潜在解决方案。然而，现有的 PNoC 设计由于激光功耗过高而无法充分发挥其潜力。之前试图提高 PNoC 中激光功率效率的工作并未考虑影响 PNoC 激光功率要求的所有关键因素。因此，它们无法在 PNoC 的激光功率降低、实现的性能和能效之间取得理想的平衡。在本文中，我们提出了在 PNoC 中采用基于规则的自适应的 PROTEUS 框架。我们的方法不仅降低了激光功耗，而且通过机会性地增加 PNoC 中的通信数据速率来最小化平均数据包延迟，从而在激光功率降低、性能和能源效率之间产生所需的平衡在 PNoC 中。我们对 PARSEC 基准的评估表明，与来自其他公司的另一种激光电源管理技术相比，我们的 PROTEUS 框架可以实现高达 24.5% 的激光功耗降低、31% 的平均数据包延迟和 20% 的每比特能量降低。之前的工作。