An energy-aware framework for dynamic software management in mobile computing systems Yunsi Fei, Lin Zhong, and Niraj K. Jha Presented By Vimarsh Puneet.

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Presentation transcript:

An energy-aware framework for dynamic software management in mobile computing systems Yunsi Fei, Lin Zhong, and Niraj K. Jha Presented By Vimarsh Puneet

Introduction What is DSOM ? It is a system that optimizes energy consumption by exploring different QoS levels, among different priority based application. Alternate technique Energy-efficient hardware Software optimization Dynamic power management (DPM) and dynamic voltage/frequency scaling (DVFS)

Main Idea

Challenges Modify the applications to expose the software knobes Provide interface for application and OS to communicate Management of software by certain policies Energy estimation module

Design Monitors the resources and manages their usage Controls the execution, creation and termination of processes Every application needs to provide

Algorithms used

Coordinator Design Metadata and process space information Runtime library Higher priority application running and low priority application enters.

Adaptation Block Different execution sequence for different QoS One single block with global knobs ( flags ) Many different adaptation blocks Yielding application take one of the following actions Suspended Aborted Rolled back

Implementation Registry Runtime Library Provides functionalities required by the application to interact with the coordinator Coordinator (Server) Coordinator (Server) App 2 (Client) App 2 (Client) App 3 (Client) App 3 (Client) App 1 (Client) App 1 (Client) App 4 (Client) App 4 (Client) New Application

Energy estimation module Video player (Color, Gray, Mono, Threashold)(Color, Gray, Mono, Threashold)

Color, Gray, Monoa and Threashold

Energy estimation module VoIP application,RATSpeech Recognizer

Experiment Experimental Setup

Results

Results contd..

Experiment with multiple application High priority application joining low priority application

Experiment with multiple application Low priority application joining high priority application

Conclusion System that meets the user-specified goals and user’s intention No changes required in the underlying OS Easily portable to any OS