Dynamic power management for many-core platforms in the dark silicon era: A multi-objective control approach
Dynamic power management for many-core platforms in the dark silicon era: A multi-objective control approach
复制标题
暗硅时代多核平台的动态电源管理：多目标控制方法
DOI：
10.1109/islped.2015.7273517
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
H. Tenhunen
中科院分区：
文献类型：
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作者：
A. Rahmani;M. Haghbayan;A. Kanduri;Awet Yemane Weldezion;P. Liljeberg;J. Plosila;A. Jantsch;H. Tenhunen
在暗硅时代，具有运行时应用程序映射的基于NoC的众核系统的电源管理变得更具挑战性。它需要多目标控制方法来考虑总功耗的上限、工作负载的动态行为、处理元件利用率、每核功耗和片上网络负载。在本文中，我们提出了一个多目标的动态电源管理方法，同时考虑所有这些参数。细粒度的电压和频率缩放，包括近阈值操作，和每个核心的功率门控被用来优化性能。此外，干扰抑制器被设计为当新应用开始执行时主动地按比例缩小正在运行的应用中的活动，以防止急剧的功率预算违反。动态工作负载和混合时间关键型应用程序配置文件的模拟表明，我们的方法是有效的，同时大大提高了系统吞吐量和减少功率预算违规，履行的功率预算相比，国家的最先进的电源管理政策。
Power management of NoC-based many-core systems with runtime application mapping becomes more challenging in the dark silicon era. It necessitates a multi-objective control approach to consider an upper limit on total power consumption, dynamic behaviour of workloads, processing elements utilization, per-core power consumption, and load on network-on-chip. In this paper, we propose a multi-objective dynamic power management method that simultaneously considers all of these parameters. Fine-grained voltage and frequency scaling, including near-threshold operation, and per-core power gating are utilized to optimize the performance. In addition, a disturbance rejecter is designed that proactively scales down activity in running applications when a new application commences execution, to prevent sharp power budget violations. Simulations of dynamic workloads and mixed time-critical application profiles show that our method is effective in honoring the power budget while considerably boosting the system throughput and reducing power budget violation, compared to the state-of-the-art power management policies.