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Name: James  Griffioen
Position Type: Professorship
Appointment Start Date: 07/01/02
Appointment End Date: 06/30/07
Area of Specialty: Computer networks and distributed systems
Summary Vita: James N. Griffioen Department of Computer Science University of Kentucky Lexington, Kentucky 40506 Education Year Degree Institution 1991 Ph.D. (Computer Science) Purdue University 1988 M.S. (Computer Science) Purdue University 1985 B.A. (Computer Science) Calvin College Employment Date Title Organization 2000-present Director Lab for Advanced Networking at UK 1999 Sabbatical AT&T Research Labs, NJ 1997-present Associate Professor University of Kentucky 1991-1997 Assistant Professor University of Kentucky Select Publications 1. K. Calvert, S. Venkatramen, and J. Griffioen, ``FPAC: Fast, Fixed-Cost Authentication for Access to Reserved Resources'', In the Proceedings of the IEEE INFOCOM 2002 Conference on Computer Communications, June, 2002 2. K. Calvert, J. Griffioen, and S. Wen, ``Lightweight Network Support for Scalable End-to-End Services'', In the Proceedings of the ACM SIGCOMM Conference, August, 2002 3. S. Wen, J. Griffioen, and K. Calvert, ``CALM: Congestion-Aware Layered Multicast'', In the Proceedings of the 2002 IEEE Open Architectures and Network Programming Workshop (OPENARCH), June, 2002 4. R. Gopalakrishnan, J. Griffioen, Gisli Hjalmtysson, Cormac Sreenan and Su Wen, ``A Simple Loss Differentiation Approach to Layered Multicast'', In the Proceedings of the INFOCOM 2000 Conference, 5. J. Griffioen, B. Seales, J. Lumpp, ``Teaching in Wireless Classrooms'', IEEE Journal of Engineering Education, Oct 1999 Recently Funded Research Projects CO-PI, \$500,000, NSF, * Generalizing the Network Layer, Co-PI, $500,000, NSF, with K. Calvert, Sept 2004 - Sept 2007 * An Integrated Approach to Scalable Content Delivery over the Internet, Co-PI, $300,000, NSF, with Z. Fei and M. Singhal, August 2002 - August 2005 * The Metaverse: A Laboratory for Digital Media Networks, PI, $1.27 Million, NSF CISE Research Infrastructure Grant, with K. Calvert, C. Jaynes, J. Mazur, B. Seales, Z. Fei, J. McDonough, and D. Maloney, July 2001 - July 2006 * A New Approach to End-to-End Design Using Lightweight Router Processing Modules, PI, $52,000, Intel Research Council, with K. Calvert, May 2001 - May 2003 * Acquisition, Representation and Remote Visualization of Digital Artifacts Collections, CO-PI, $1M, NSF Information Technology Research (ITR) Grant, with B. Seales, C. Jaynes, and K. Calvert, Jan 2002 - Jan 2005 * Activecast, CO-PI, $1.6 Million, DARPA Active Nets Program, with K. Calvert and E. Zegura, May 1999 - Dec 2003 * Wireless Computing in the Classroom, PI, $80,000, Databeam (Lotus/IBM) and Kentucky Information Resources Management Commission (KIRM), with B. Seales and J. Lumpp, July 1997 - July 1998 Collaborators Ken Calvert (Univ. of Kentucky), Ellen Zegura (Georgia Tech), Zongming Fei (Univ. of Kentucky), Cormac Sreenan (Univ. of Cork), Gisli Hjalmtysson (AT&T Labs), Brent Seales (Univ. of Kentucky), Chris Jaynes (Univ. of Kentucky), Doyle Friskney (Univ. of Kentucky), R. Gopalakrishnan (AT&T Labs), Raphael Finkel (Univ. of Kentucky), Kevin Kiernan (Univ. of Kentucky), Raj Yavatkar (Intel), Yuri Breitbart (Kent State), Students and Postdoctoral Scholars Ph.D. students: Randy Appleton (Aug 1996), Robert Adams (Jan 1999), Todd Anderson (July 1999), Chris Diaz (Feb 2002), Mike Rogers (July 2002) Su Wen (Expected Dec 2002) Total Masters and Ph.D graduate students advised in last five years: 25. Total postdoctoral scholars sposored: 0. Graduate and Postdoctoral Advisors * Ph.D. Advisor: Douglas Comer (Purdue University) Professional Activities and Awards * Awards: FIE '98 Best Paper Award, USENIX Association Scholarchip ('89), David Ross Fellowship ('89), IEEE Outstanding Reviewer Award ('94), CS Outstanding Teacher Award ('96), ACM Programming Team Advisor Award ('92, '94, '96) * Reviewer for: NFS, Prentice Hall, CRC Press, /Software Practice & Experience/, /Computing Systems/, awarded Outstanding Reviewer by /IEEE Computer Society Press/, and many conferences. * Co-Chair: NOSSDAV 2002 Conference * Conference Committee Member: International Conference on Distributed Computing Systems (ICDCS), IEEE Research Issues in Data Engineering Conference (RIDE), Conference on Network and Operating System Support for Digital Audio and Video (NOSSDAV), International Conference on Network Protocols (ICNP), Openarch, Global Internet * Recent Invited Talks: IBM TJ Watson, INRIA, AT&T Research Labs, Lucent (Bell Labs), Intel, and several universities * Member of: ACM, SIGCOMM, SIGOPS, USENIX, IEEE
Highest Degree: Ph.D.
Professional Affiliations: ACM, SIGCOMM, SIGOPS, USENIX, IEEE
Primary Research Focus: The primary research focus has been in the areas of lightweight network processing, overlay multipath routing, and generalized routing.
Key Contributions: A primary contributions was to the area of lightweight programmable network services. Our goal was to show that it is possible to design computer networks so that the network (much like computers) can be programmed to carry out application-specific work inside the network. To that end, we showed how a new lightweight programmable network service call ephemeral state processing (ESP) can be used to provide reliable communication among a group of participants. (Reliable group communication might be used, for example, in the distribution of timely financial/stock information to brokers everywhere, or to reliably transmit urgent status information to diaster recovery teams.) Development of these lightweight programmable services occurred on several fronts, including developing a way to to implement an ephemeral state processing service efficiently using FPGA technology and developing new ESP instructions needed to support reliable multicast services, grouping services, and shared bottleneck detection services. An outgrowth of this work was the discovery that "early reflection" of ESP packets can be used to improve reliability. We also created the ability to send interface-specific ESP packets which is required when routing is asymmetric. We also did work in the emerging area of overlay/p2p networks, (think napster, e-donkey, bit-torrent, kazaa, etc.). In particular, we developed ways to estimate the potential bandwidth that can be achieved using multipath overlay networks. Past work focused on estimating capacity or available bandwidth which does not give an accurate estimate of the achievable throughput an application can expect. By incorporating network delay information into the estimates, we are able to more accurately predict the achievable throughput. We also made contributions to the problem of generalized routing, examining the cost/benefits of more powerful addressing/routing abstractions than currently allowed by the Internet. Our initial results show that predicated- based addressing mechanisms can be supported with modest increases to the routing overhead, load on the network, or delay experienced by applications. Details of our findings can be found in the listed publications. (the above represents joint work with Professors Calvert and Heath)
Publications: K. Calvert, J. Griffioen, and S. Wen, Scalable Network Management using Lightweight Programmable Network Services, to appear in the Special Issue on Management of Active and Programmable Networks in the Journal of Network and System Management, Vol 14, No 1, March 2006 L. Wang, J. Griffioen, and K. Calvert, Estimating Achievable Throughput, short paper appearing in the poster proceedings of SIGCOMM 2005. August, 2005 M. Muthulakshmi, R. Heath, K. Calvert, and J. Griffioen, A Node Processor Microarchitecture for Implemention of the ESP Network Service Development Paradigm, In the proceedings of the International Conference on Information Systems: New Generations (ISNG 2005), pp 27--32, April 4-6, 2005, L. Poutievski, K. Calvert, and J. Griffioen, Routing without Addresses, short paper appearing in the poster proceedings of ICNP 2004, October, 2004 K. Calvert, J. Griffioen, B. Mullins, L. Poutievski, and A. Sehgal, Secure, Customizable, Many-to-One Communication, In the Proceedings of the Sixth International Working Conference on Active Networks (IWAN 2004), Oct 27-29, 2004