Network Systems Colloquium


Prof. Klara Nahrstedt
University of Illinois at Urbana-Champaign

November 16, 10:30AM
TBA (Note special time/date/room)


In this talk we discuss a distributed QoS compilation and runtime system which represents a scalable and reconfigurable QoS framework for component-based distributed applications. Our QoS compiler encompasses a solution for an integrated methodology including QoS specification, QoS translation, as well as discovery, location, configuration, distribution and negotiation of services and their quality. We will present the entities, services and protocols of the QoS compiler framework, such as the application-to-component translators, component-to-resource translators, QoS-aware service discovery and contention-aware resource allocation protocols for the end-to-end QoS setup.

We have implemented the QoS compiler framework within our 2K^Q distributed middleware system and validated the feasibility on various distributed multimedia applications. The first prototype results show a feasible overhead of the runtime service instantiation and reconfiguration for different applications and their QoS requirements.

Klara Nahrstedt is an assistant professor at the University of Illinois at Urbana-Champaign, Computer Science Department. Her research interests are directed towards reconfigurable multimedia services, multimedia protocols, multimedia security, middleware systems, quality of service(QoS) provision, QoS routing, and QoS-aware resource management in distributed multimedia systems. She is the coauthor of the widely used multimedia book `Multimedia:Computing, Communications and Applications' published by Prentice Hall, the recipient of the Early NSF Career Award, the Junior Xerox Award, and then IEEE Communication Society Leonard Abraham Award for Research Achievements.

Klara Nahrstedt received her BA in mathematics from Humboldt University, Berlin, in 1984, and M.Sc. degree in numerical analysis from the same university in 1985. She was a research scientist in the Institute for Informatik in Berlin until 1990. In 1995 she received her PhD from the University of Pennsylvania in the department of Computer and Information Science.

The Network Systems Colloquium is sponsored by the Network Systems Lab at Purdue University. For further information, please contact Kihong Park ( or 765-494-7821).