Title :
OAPM: Fine-grained operand-aware power management with fast reaction time
Author :
Farah, Salirti N. ; Bayoumi, Magdy A.
Author_Institution :
Center for Adv. Comput. Studies, Univ. of Louisiana at Lafayette, Louisiana, LA, USA
Abstract :
Power management is a crucial aspect of modern low power SoCs, but kernel-based approaches suffer from slow DVFS and power state adaptation. We propose OAPM, a power management scheme based on circuit-level operand activity that complements existing OS-based solutions with better system visibility. Operating at the cycle granularity, OAPM has very fast response time in requesting the appropriate power state via a two-stage algorithm. Simulations show potential savings of up to 70% when used with clock-gated Domino, depending on the activity profile.
Keywords :
clocks; low-power electronics; operating system kernels; power aware computing; system-on-chip; OAPM; OS-based solutions; activity profile; circuit-level operand activity; clock-gated domino; cycle granularity operation; dynamic voltage and frequency scaling; fast reaction time; fast response time; fine-grained operand-aware power management; kernel-based approaches; low power SoC; power state adaptation; slow DVFS; system visibility; two-stage algorithm; Adders; Clocks; Kernel; Logic gates; Monitoring; Radiation detectors; Switches; clock gating; load monitoring; power gating; power management;
Conference_Titel :
Electronics, Circuits and Systems (ICECS), 2014 21st IEEE International Conference on
DOI :
10.1109/ICECS.2014.7050095
