Power Minimization under QoS Constraints
Power Minimization under QoS Constraints
Loading...
Files
Publication or External Link
Date
2002-04
Authors
Wong, Jennifer L.
Qu, Gang
Potkonjak, Miodrag
Advisor
Citation
J. Wong, G. Qu, and M. Potkonjak. "Power Minimization under QoS Constraint," IEEE International Packetvideo Workshop, April 2002.
DRUM DOI
Abstract
QoS has been often addressed in multimedia, video, and networking research communities,
but rarely in the design community. Our goal is to introduce the first system design technique
for comprehensive quality-of-service (QoS) low power synthesis. Specifically, we study how to
efficiently exploit the trade-o between the system cost and energy consumption in real-time
systems that address packet-based multimedia transmission and processing. We first introduce
a system of techniques that minimizes energy consumption of stream-oriented applications
under two main QoS metrics: latency and synchronization. Speci cally, we study how multiple
voltages can be used to simultaneously satisfy hardware requirements and minimize power
consumption, while preserving the requested level of QoS, in this case satisfying latency and
synchronization requirements.
We have developed a provably optimal polynomial time o -line algorithm for multiple volt-
age scheduling of single and multiple processes. The o -line algorithm provides lower bounds
on achievable power minimization and can be used as a starting point for the development
and evaluation of an on-line approach. The effectiveness of the algorithm is demonstrated on
a number of multimedia benchmarks.