Title :
Dynamic voltage and frequency scaling under a precise energy model considering variable and fixed components of the system power dissipation
Author :
Choi, Kihwan ; Lee, Wonbok ; Soma, Ramakrishna ; Pedram, Massoud
Author_Institution :
Dept. of Electr. Eng. Syst., Southern California Univ., Los Angeles, CA, USA
Abstract :
This work presents a dynamic voltage and frequency scaling (DVFS) technique that minimizes the total system energy consumption for performing a task while satisfying a given execution time constraint. We first show that in order to guarantee minimum energy for task execution by using DVFS it is essential to divide the system power into active and standby power components. Next, we present a new DVFS technique, which considers not only the active power, but also the standby component of the system power. This is in sharp contrast with previous DVFS techniques, which only consider the active power component. We have implemented the proposed DVFS technique on the BitsyX platform - an Intel PXA255-based platform manufactured by ADS Inc., and report detailed power measurements on this platform. These measurements show that, compared to conventional DVFS techniques, an additional system energy saving of up to 18% can be achieved while satisfying the user-specified timing constraints.
Keywords :
integrated circuits; microprocessor chips; power consumption; timing; ADS Incorporated; BitsyX platform; Intel PXA255-based platform; active power; dynamic voltage and frequency scaling; energy saving; execution time constraint; power measurements; precise energy model; standby power; system energy consumption; system power dissipation; task execution; user-specified timing constraints; Dynamic voltage scaling; Energy consumption; Energy measurement; Frequency; Manufacturing; Power dissipation; Power measurement; Power system modeling; Time factors; Timing;
Conference_Titel :
Computer Aided Design, 2004. ICCAD-2004. IEEE/ACM International Conference on
Print_ISBN :
0-7803-8702-3
DOI :
10.1109/ICCAD.2004.1382538