Distributed System of Digitally Controlled Microregulators Enabling Per-Core DVFS for the POWER8TM Microprocessor

📋 论文概要

本文提出了一种分布式数字控制微调节器系统，用于实现POWER8微处理器的每核动态电压频率缩放（DVFS），以优化多核处理器的功耗性能。该系统通过集成电压调节模块（iVRM）提供成本有效的每核DVFS方案。

💡 主要创新点

• 提出分布式数字控制微调节器架构，实现每核独立的电压调节。
• 将iVRM系统集成到POWER8微处理器中，支持精细化的DVFS控制。
• 通过数字控制方式提高调节精度和响应速度，优化功耗管理。

🏷 关键词

📄 原文摘要

Gregory Still3, Ryan Kruse4, Seongwon Kim1, David Boerstler4, Tilman Gloekler5, Raphael Robertazzi1, Kevin Stawiasz1, Timothy Diemoz2, George English2, David Hui2, Paul Muench2, Joshua Friedrich4 IBM, Yorktown Heights, NY, 2IBM, Poughkeepsie, NY, IBM, Raleigh, NC, 4IBM, Austin, TX, 5IBM, Boeblingen, Germany 1 3 Integrated voltage regulator modules (iVRMs) [1] provide a cost-effective path to realizing per-core dynamic voltage and frequency scaling (DVFS), which can be used to optimize the performance of a power-constrained multi-core processor. This paper presents an iVRM system developed for the POWER8TM microprocessor, which functions as a very fast, accurate low-dropout regulator (LDO), with 90.5% peak power efficiency (only 3.1% worse than an ideal LDO). At low output voltages, efficiency is reduced but still sufficient to realize beneficial energy savings with DVFS. Each iVRM features a bypass mode so that

👥 作者与机构

Zeynep Toprak-Deniz1, Michael Sperling2, John Bulzacchelli1,