Notes

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Outline

Energy-Aware Adaptation for Mobile Applications
| Jason Flinn
| M. Satyanarayanan
| Carnegie Mellon University
Motivation
Outline
Goal-Directed Adaptation
Odyssey
Predicting Future Energy Demand
Determining Energy Supply
Triggering Adaptation
Evaluating Goal-Directed Adaptation
Energy Supply & Demand
Time Goal: 20 Minutes
Energy Supply & Demand
Time Goal: 26 Minutes
It Works!
Outline
PowerScope: Profiling Energy Use
Identifying Effective Tradeoffs
Application: Video Player
| Fetches video data from remote server.
| Two dimensions of data fidelity:
| Compression (baseline, Premiere-B, Premiere-C).
| Display window size (baseline, half width/height).
Impact of Fidelity on Video Player
Application: Speech Recognition
| Speech-to-text translation of spoken utterances.
| Two dimensions of fidelity:
| Full or reduced speech model.
| Local, remote, or hybrid recognition.
Impact of Fidelity on Speech Recognition
Summary: Impact of Fidelity
Zoned Backlighting
Future Work
Related Work
Conclusion