SHF: Small: Toward Soft Near-threshold Voltage Computing

SHF：小型：迈向软近阈值电压计算

• 批准号: 1421988
• 负责人: Ulya Karpuzcu
• 金额: $ 17万
• 依托单位: University of Minnesota-Twin Cities
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-09-01 至 2017-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1421988&HistoricalAwards=false
• 关键词: SHF; Small; Toward; Soft; Near

Looking forward, a fundamental challenge in computer systems is the Power Wall, where, due to imbalances in technology scaling, not all the cores that can be placed in a many-core chip can be powered on at the same time. The Power Wall is transforming all levels of the system stack, including the many-core architecture landscape -- the focus of this project. By improving power more than an order of magnitude (and energy efficiency, several times) over conventional operation, near-threshold voltage computing (NTC) has the potential to push back the Power Wall. To unlock NTC?s energy efficiency potential, however, critical barriers to NTC -- limited degree of parallelism and higher vulnerability to parametric variation -- must be attacked. This project suggests leveraging scaling characteristics and implicit fault tolerance of emerging R(ecognition), M(ining), S(ynthesis) applications in order to overcome NTC barriers.This project will not only address critical barriers of NTC to unlock NTC?s energy efficiency potential, but also deliver tools and models to quantify the implications of these barriers at the system level. The deliverables will help the architecture community in reasoning about and exploring how to trade-off energy efficiency for resiliency in near-future systems capable of operating atas low voltages as near-threshold.

展望未来，计算机系统中的一个根本挑战是电源墙，由于技术扩展的不平衡，并非所有可以放置在众核芯片中的内核都可以同时通电。Power Wall正在改变系统堆栈的所有级别，包括多核架构环境-这是该项目的重点。通过将功率提高超过一个数量级（和能源效率，几倍），近阈值电压计算（NTC）有可能推回电源墙。要解锁NTC？的能源效率潜力，但是，关键的障碍NTC -有限的并行度和更高的脆弱性参数变化-必须加以攻击。 该项目建议利用新兴的R（ecognition）、M（ining）、S（synthesis）应用的缩放特性和隐式容错来克服NTC障碍。的能源效率潜力，而且还提供工具和模型，以量化这些障碍在系统层面的影响。这些可交付成果将帮助架构社区推理和探索如何在不久的将来能够以接近阈值的低电压运行的系统中权衡能源效率和弹性。