Chris Gniady

Associate Professor | University of Arizona

Lecture Information:
  • March 8, 2019
  • 2:00 PM
  • CASE 241
Photo of Chris Gniady, Associate Professor of University of Arizona

Speaker Bio

Chris Gniady is an Associate Professor in the Department of Computer Science at the University of Arizona. He received a Ph.D. in 2005 and B.S. in 1997 in Electrical and Computer Engineering from Purdue University. His research interests include energy management from mobile phones to datacenter and supporting networking infrastructure, performance optimizations at hardware and software levels, and novel applications of the sensor and mobile devices in healthcare. He has published papers in prestigious venues such as USENIX ATC, ACM SIGMETRICS, IEEE HPCA, ACM ISCA, and IEEE TOCs. He has served on technical program committees of many conferences and workshops. He is also a recipient of NSF CAREER award for research in energy optimization based on user interactions.


Portable devices such as smartphones and smartwatches are an integral part of our lives. We rely on these devices for many tasks, from communication to entertainment. Users demand faster responses, more features, and a longer better life. However, more performance and features usually come at the cost of battery life. In this talk, I describe how we can meet user demand and improve battery life for common tasks such as network communication, authentication, and fitness tracking. At the core of the solution lies the idea that users do not need maximum performance as long as they are not delayed in accomplishing the task. I will discuss how we can observe user demand and match the cellular radio bandwidth to the task at hand. Applying a similar idea, we will explore how to match fitness tracking to user activity, and how to authenticate faster based on how users are using their phones.