•   When: Monday, October 17, 2016 from 10:30 AM to 11:30 AM
•   Speakers: Dr. Hakan Aydin, Department of Computer Science, George Mason University
•   Location: Johnson Center Room E
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ABSTRACT

For several decades, the design and performance evaluation of computer systems were marked by a strong emphasis on metrics such as speed and throughput. Recently, power/energy efficiency has emerged as another major design and operation constraint for a wide spectrum of systems, ranging from handheld computers to Internet data centers. Most operating system level power management techniques are based on dynamically tuning various "control knobs": they either operate the system components at reduced performance levels, or put them in sleep states. In real-time embedded systems that have to meet stringent timing constraints, it is imperative to employ these techniques without compromising the temporal predictability.

In this talk, I will present an overview of my research on power management for real-time embedded systems. I will describe how, and under what conditions, the techniques that manage the power consumption of different system components can be combined, while preserving the timing guarantees. I will show how these solutions can be adapted to the common multi-rate periodic execution patterns of real-time systems. I will also highlight the subtle interplay between power management and reliability in real-time embedded systems, and the resulting challenges.

BIOGRAPHY

Hakan Aydin is an Associate Professor in the Department of Computer Science at George Mason University. His research interests include real-time embedded systems, sustainable computing, fault tolerance, and wireless sensor networks. He served on the program committees of numerous conferences and workshops. He chaired the technical program committee of the IEEE Real-Time and Embedded Technology and Applications Symposium (RTAS) in 2011. He is a recipient of the NSF CAREER Award. He also twice received the Computer Science Department Teaching Award at GMU.