Quantitative comparison of the power reduction techniques for samsung reconfigurable processor

Hoyoung Kim, Soojung Ryu, Abhishek Sinkar, Nam Sung Kim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

With significant growth in portable multimedia devices such as smartphones, application processors (AP) play a critical role for running various multimedia applications on these devices. By considering the power constraints of such devices, we often integrate reconfigurable processors (RPs) into APs. This is because RPs offer flexibility and good performance, thereby greatly improving the power efficiency for running these multimedia applications. Like many other processors, RPs also exploit the dynamic voltage/frequency scaling (DVFS) to improve their power efficiency. Owing to the platform cost constraints, however, these RPs are often integrated to low dropout (LDO) voltage regulators (VRs) instead of switching VRs. When compared with switching VRs, LDO VRs are very inexpensive; however, they suffer from considerable power loss when they are required to deliver a low output voltage. However, many previous studies focused on analyzing the power efficiency of various DVFS techniques only with regard to the processors and did not consider the negative impact of the VR power losses on the overall power efficiency of the platform. In this work, we quantitatively compare the power efficiency of a Samsung RP (SRP) adopting the race-to-halt technique with that of the SRP exploiting the DVFS supported by LDO VRs, by considering the effect of the VR power losses. Finally, we demonstrate that using the race-to-halt technique results in high power efficiency when compared with the DVFS in a commercial processor, by considering the VR power efficiency.

Original languageEnglish (US)
Title of host publication2014 IEEE International Symposium on Circuits and Systems, ISCAS 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1736-1739
Number of pages4
ISBN (Print)9781479934324
DOIs
StatePublished - Jan 1 2014
Externally publishedYes
Event2014 IEEE International Symposium on Circuits and Systems, ISCAS 2014 - Melbourne, VIC, Australia
Duration: Jun 1 2014Jun 5 2014

Publication series

NameProceedings - IEEE International Symposium on Circuits and Systems
ISSN (Print)0271-4310

Other

Other2014 IEEE International Symposium on Circuits and Systems, ISCAS 2014
Country/TerritoryAustralia
CityMelbourne, VIC
Period6/1/146/5/14

Keywords

  • Samsung reconfigurable processor
  • dynamic voltage frequency scaling
  • low dropout voltage regulator
  • race-to-halt

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Fingerprint

Dive into the research topics of 'Quantitative comparison of the power reduction techniques for samsung reconfigurable processor'. Together they form a unique fingerprint.

Cite this