Title :
AMD SOC power management: Improving performance/watt using run-time feedback
Author :
Bircher, W. Lloyd ; Naffziger, Samuel
Author_Institution :
Adv. Micro Devices, USA
Abstract :
This paper presents an analysis of four runtime power management features implemented in AMD´s recent 28nM APU. These features optimize SOC performance by shifting power and frequency resources in response to workload characteristics. The Global Efficient APM (GEAPM), Core-Bound Boost (CBB) and Memory-Bound Boost (MBB) features are shown to provide a performance improvement of up to 76%, 4.3% and 12.5% respectively. The Local Efficient APM (LEAPM) feature is shown to reduce average CPU power consumption by 34% while reducing performance by less than 1%.
Keywords :
microprocessor chips; power consumption; system-on-chip; AMD SOC power management; APU; CPU power consumption; core-bound boost; global efficient APM; local efficient APM; memory-bound boost; run-time feedback; runtime power management; Clocks; Graphics processing units; IP networks; Monitoring; Power demand; System-on-chip; Temperature; Power management; SOC; workload analysis;
Conference_Titel :
Custom Integrated Circuits Conference (CICC), 2014 IEEE Proceedings of the
Conference_Location :
San Jose, CA
DOI :
10.1109/CICC.2014.6946043
