Abstract: Data-intensive Grid applications require huge data transfers between grid computing nodes. These computing nodes, where computing jobs are executed, are usually geographically separated. A grid network that employs optical wavelength division multiplexing (WDM) technology and optical switches to interconnect computing resources with dynamically provisioned multi-gigabit rate bandwidth lightpath is called a Lambda Grid network. A computing task may be executed on any one of several computing nodes which possesses the necessary resources. A Lambda Grid network also supports scheduling of bandwidth requests in advance. In order to reflect the reality in job scheduling, allocation of network resources for data transfer should be taken into consideration.

In this talk, we discuss the emergence of Lambda Grid and other hybrid network architectures. We describe the joint scheduling problem while considering both optical network and computing resources in a Lambda Grid network. The objective of our work is to maximize the total number of jobs that can be scheduled in a Lambda Grid network. We also describe our work on advance scheduling and rescheduling of bandwidth reservations in such a network. Finally, we will discuss our other ongoing projects funded by the NSF GENI initiative and the US Department of Agriculture.

Short Bio: Byrav Ramamurthy received his B.Tech. degree in Computer Science and Engineering from Indian Institute of Technology, Madras (India) in 1993. He received his M.S. and Ph.D. degrees in Computer Science from University of California (UC), Davis in 1995 and 1998, respectively. He is currently an associate professor in the Department of Computer Science and Engineering at the University of Nebraska-Lincoln (UNL), where he has been on the faculty since August 1998. He is author of the book 'Design of Optical WDM Networks - LAN, MAN and WAN Architectures' and a co-author of the book 'Secure Group Communications over Data Networks' published by Kluwer Academic Publishers/Springer in 2000 and 2004 respectively.

He currently serves as the Vice Chair and Online Content Chair of the IEEE ComSoc Optical Networking Technical Committee (ONTC). He serves on the Editorial Boards of IEEE Communications Surveys and Tutorials (CST) and OSA Journal of Optical Networking (JON). He serves as the General Co-Chair for the ICCCN 2009 conference and will serve as the TPC Co-Chair for the IEEE INFOCOM 2011 conference.

Prof. Ramamurthy is a recipient of the UNL College of Engineering and Technology Faculty Research Award for 2000 and the UNL Computer Science and Engineering Dept. Student Choice Outstanding Teaching Award for Graduate-level Courses for 2002-2003 and 2006-2007. His research areas include optical networks, wireless sensor networks and network security. His research is supported by the U.S. National Science Foundation, US Department of Agriculture, Agilent Tech., and OPNET Inc.