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BACTAC - Neufeld

ECOT 831

Policies for Dynamic Clock Scheduling
Michael J. Neufeld
Grad Student, Department of Computer Science
Michael Neufeld photo

Pocket computers are beginning to emerge that provide sufficient processing capability and memory capacity to run traditional desktop applications and operating systems. The increasing demand placed on these systems by software is competing against the continuing trend in the design of low-power microprocessors of increasing the amount of computation per unit of energy. Consequently, in spite of advances in low-power circuit design, the microprocessor is likely to continue to account for a significant portion of the overall power consumption of pocket computers.

This paper investigates clock scaling algorithms on the Itsy, an experimental pocket computer that runs a complete, functional multitasking operating system (a version of Linux 2.0.30). We implemented a number of clock scaling algorithms that are used to adjust the processor to reduce overall energy usage. After testing these algorithms, we conclude that the currently proposed algorithms consistently fail to achieve their goal of saving energy while not causing user applications to change their interactive behavior.

This is a dry run of a presentation to be given at OSDI 2000.

BACTAC, the Beverage And Chips Tuesday Afternoon Colloquium, is a weekly forum run by graduate students. The goal is provide an informal setting in which anyone can (basically) present anything. In the past, we have had practice talks for conferences and job interviews, research reports, juggle lessons (!), student representative reports, internship discussions, an introduction to ergonomics, and "pay attention to this when you are going to look for job" discussions.

BACTAC is meant to be an informal and social event to promote the interaction among graduate students. BACTAC is typically held every Tuesday, at 3:30pm, in room ECOT 831. Free munchies and drinks are provided.

Please email Caleb Phillips for more information or if you want to be a speaker.

See also:
Department of Computer Science
College of Engineering and Applied Science
University of Colorado Boulder
Boulder, CO 80309-0430 USA
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May 5, 2012 (13:44)