INTEL RESEARCH SEMINAR
DATE: Thursday, April 24, 2003
TIME: Noon - 1:30 pm
PLACE: Intel Seminar (417 S. Craig Street - 3rd Floor)
SPEAKER:
Padmanabhan
(Babu) Pillai
University of Michigan
TITLE:
Energy Conservation and Adaptation in Mobile and Embedded Systems
ABSTRACT:
In recent years, there has been a rapid spread of non-traditional computing
platforms, especially mobile and portable computing devices. As applications
become increasingly sophisticated and processing power increases, the
most serious limitation on these devices is the available battery life.
This talk presents two approaches to conserving energy in mobile and embedded
computing systems.
The first half of this talk will show how an operating system can exploit hardware features to change the processor operating frequency and voltage to reduce energy consumption. This is difficult in many embedded situations due to the strict timing issues involved in control or communication applications. A class of real-time dynamic voltage scaling (RT-DVS) algorithms are introduced that can provide dramatic energy savings while maintaining timing guarantees.
Although such mechanisms can improve energy efficiency of a system, there
is no assurance that the limited energy available is expended on the most
valuable tasks. The second half of this talk presents the Energy-Aware
Quality of Service (EQoS) framework that can provide varying service quality
to different applications based on task characteristics, value of results,
and runtime requirements to maximize returns on available energy. Energy-based
adaptation of the task set and service levels is formulated as a tractable
minimization problem, with both optimal solutions and fast heuristics
presented.
BIO:
Padmanabhan Pillai, also known as Babu, is currently finishing his Ph.D.
in Computer Science and Engineering at the University of Michigan. He
has received an M.S. degree from Univ. of Michigan, and B.S. from Carnegie
Mellon University (ECE'96). Currently, he is affiliated with the Real-Time
Computing Laboratory, and has focused his research in optimized operating
systems for embedded devices, power management in real-time systems, energy-aware
quality of service adaptation of applications, and the measurement and
modeling of task energy consumption. He is interested in the management
and implementation of ubiquitous computing devices, low-energy architectures,
wireless networking, and novel OS service models.
For Further
Seminar Info:
Contact Kim Kaan, 412-605-1203,
or visit http://www.intel-research.net.
SDI / LCS Seminar Questions?
Karen Lindenfelser, 86716, or visit www.pdl.cmu.edu/SDI/