Improving a Distributed Software System's Quality of Service via
Architecture-Driven Dynamic Redeployment
Speaker: Neno Medvidovic, USC/ISR
Abstract:
The quality of service (QoS) provided by a distributed software system
depends on many system parameters, such as network bandwidth, reliability of
links, frequencies of software component interactions, and so on. A
distributed system's deployment architecture (i.e., the mapping of software
components onto hardware hosts) can have a significant impact on its QoS.
Furthermore, the deployment architecture will influence user satisfaction,
as users typically have varying QoS preferences for the system services they
access. Finding a deployment architecture that will maximize the users'
overall satisfaction is a challenging, multi-faceted problem. In this talk,
I will present
- an extensible model of a software system's deployment architecture;
- a set of tailorable algorithms for estimating an improved redeployment;
- a visual environment for automatically exploring large numbers of deployment options; and
- a runtime infrastructure for effecting the preferred deployments during system runtime.
I will discuss the evaluation of this approach on a large number of
representative scenarios, including two industrial settings.
Bio:
Nenad Medvidovic is an Associate Professor in the Computer Science Department at the University of Southern California and is a faculty member of the USC Center for Software Engineering. He received his Ph.D. in 1999 from the Department of Information and Computer Science at the University of California, Irvine, where he also received an M.S. in 1995. Medvidovic received a B.S. in Computer Science summa cum laude in 1992 from the Computer Science and Engineering Department at Arizona State University. Medvidovic is a recipient of the 2000 National Science Foundation CAREER award and the 2005 Okawa Foundation Research Award. His research interests are in the area of architecture-based software development. His work focuses on software architecture modeling and analysis; middleware facilities for architectural implementation; product-line architectures; architectural styles; and architecture-level support for software development in highly distributed, mobile, resource constrained, and possibly embedded computing environments. Medvidovic is a co-founder of USC's Embedded Systems Laboratory, sponsored by Intel.
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