Proactive Voltage Droop Mitigation Using Dual-ProportionalDerivative Control Based on Current and Voltage Prediction Applied to a Multicore Processor in 28nm CMOS

📋 论文概要

本文提出了一种基于电流和电压预测的双比例微分控制方法，用于主动缓解动态电压跌落问题。该方法通过预测负载电流和电压变化，提前调整供电，克服了传统电压传感器检测延迟的缺点。

💡 主要创新点

• 提出了基于电流和电压预测的双比例微分控制架构，实现主动电压跌落缓解。
• 通过预测负载电流和电压变化，提前调整供电，克服了传统传感器检测延迟的问题。

🏷 关键词

📄 原文摘要

dynamic voltage droops, including sharp 1st-order droops of around 100mV/10ns and frequent periodic droops when executing instructions using multiple cores [2-6] (Fig. 14.2.1 [top]). Several on-chip voltage sensors have been designed, but they suffer from several cycles of latency between workload activity changes and the detection of droop event. Some proactive designs were proposed to predict the future power at or even before a droop occurs [4-6], such as APOLLO by using key signals’ toggling-based power estimation [6]. However, droop is not only determined by load current variations, but also affected by the present voltage, as well as the power delivery network (PDN) determined by package inductance, on-chip and board decoupling capacitance and

👥 作者与机构

Weiwei Shan, Kaize Zhou, Keran Li, Yuxuan Du, Zhuo Chen, Junyi Qian,

Haitao Ge, Jun Yang, Xin Si Southeast University, Nanjing, China Drastic workload variations in multicore processors [1] inherently cause severe