Keynote Speeches:

Prof. Jack Dongarra, University of Tennessee, USA                 

Abstract of the Speech

Biographical details of the Speaker

The Slides of the Speech

Prof. Lionel Ni, Hong Kong University of Science and Technology

 ---- "Challenges in P2P Computing"

Abstract of the Speech

Biographical details of the Speaker

The Slides of the Speech

Abstract of the Speech

Biographical detail of the Speaker

The Slides of the Speech

In last 25 years, the field of scientific computing has undergone rapid change --- we have experienced a remarkable turnover of technologies, architectures, vendors, and the usage of systems.  Despite all these changes, the long-term evolution of performance seems to be steady and
continuous.

The acceptance of parallel systems not only for engineering applications but also for new  commercial applications especially for database applications emphasized different criteria for market success such as stability of system, continuity of the manufacturer and price/performance.  Due to these factors and the consolidation in the number of vendors in the market hierarchical systems build with components designed for the broader commercial market are currently replacing homogeneous systems at the very high end of performance.  Clusters build with components of the shelf also gain more and more attention and today have a dominant position in the Top500.

In this talk we will look at the some of the existing and planned high performance computer architectures and look at the interconnections schemes they are using. This talk will look at a number of different high performance computing architectures.  
　

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Jack Dongarra received a Bachelor of Science in Mathematics from Chicago State University in 1972 and a Master of Science in Computer Science from the Illinois Institute of Technology in 1973. He received his Ph.D. in Applied Mathematics from the University of New Mexico in 1980. He worked at the Argonne National Laboratory until 1989, becoming a senior scientist. He now holds an appointment as University Distinguished Professor of Computer Science in the Computer Science Department at the University of Tennessee, has the position of a Distinguished Research Staff member in the Computer Science and Mathematics Division at Oak Ridge National Laboratory (ORNL),and an Adjunct Professor in the Computer Science Department at Rice University.

He specializes in numerical algorithms in linear algebra, parallel computing, the use of advanced-computer architectures, programming methodology, and tools for parallel computers. His research includes the development, testing and documentation of high quality mathematical software. He has contributed to the design and implementation of the following open source software packages and systems: EISPACK, LINPACK, the BLAS, LAPACK, ScaLAPACK, Netlib, PVM, MPI, NetSolve, Top500, ATLAS, and PAPI. He has published approximately 200 articles, papers, reports and technical memoranda and he is coauthor of several books. He is a Fellow of the AAAS, ACM, and the IEEE and a member of the National Academy of Engineering.

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Peer-to-peer (P2P) is an emerging model aiming to further utilize Internet information and resources, complementing the available client-server services. P2P has emerged as a promising paradigm for developing large-scale distributed systems due to its many unique features and its potential in future applications.  P2P systems are popular because of their adaptation, self-organization, load-balancing, and highly availability. However, P2P systems also present many challenges that are currently obstacles to their widespread acceptance and usage, such as efficiency, security, and performance guarantees.  For example, studies have shown that P2P traffic contributes the largest portion of the Internet traffic based on the measurements on some popular P2P systems, such as FastTrack (including KaZaA and Grokster), Gnutella, and Direct Connect. Even given that 95% of any two nodes are less than 7 hops away and the message time-to-live (TTL=7) is preponderantly used, the flooding-based routing algorithm generates 330 TB/month in a Gnutella network with only 50,000 nodes. In reality, there are millions of active P2P users at any given time. Our study has shown that the mechanism of a peer randomly choosing logical neighbors without any knowledge about the underlying physical topology causes topology mismatch between the P2P logical overlay network and the physical underlying network. A large portion of the heavy P2P traffic is caused by inefficient overlay topology and the blind flooding. Security and anonymity are other concerns in P2P systems. This talk will address the above issues as well as other potential applications of P2P computing and mobile P2P systems.

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Lionel M. Ni is Professor and Head of Computer Science Department at Hong Kong University of Science and Technology. He earned his Ph.D. degree in Electrical and Computer Engineering at Purdue University in 1981. From 1981 to 2002, he was on the faculty of Computer Science and Engineering Department at Michigan State University, where he was promoted to the rank of Full Professor in 1988. From 1998 to 2001, he was co-founder and CEO of CC&T Technologies, where he led a team to design and market VoIP related products. From 1995 to 1996, he was Director of Microelectronic Systems Architecture Program at US National Science Foundation. A fellow of IEEE, Dr. Ni has chaired many professional conferences and served on the editorial board of many journals. He has directly supervised 31 Ph.D. students, won four best paper awards, and the 1994 Michigan State University Distinguished Faculty Award. His paper (with his former student, Chris Glass) “The Turn Model for Adaptive Routing”' published in 1992 was selected as one of the 41 most significant impact papers in the last 25 years in computer architecture area in 1998.  His current research includes pervasive computing, grid computing, and peer-to-peer computing.

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An ad hoc network is a collection of wireless mobile nodes that form a network without existing infrastructure or centralized administration.  Nodes in the network cooperate to forward packets for each other, to allow mobile nodes not within direct wireless transmission range of each other to communicate.  Ad hoc networks were initially studied for military applications more than 20 years ago, and they are currently a very active area of research within academia, government, and industry.  However, few real applications of ad hoc networking have yet been deployed in common usage, and the commercial potentials of this technology have yet to be realized.  In this talk, I will describe some of the current research challenges in ad hoc networking, and I will present what I believe are some the future real-world applications for this promising technology.
　

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B.A. Computer Science and Mathematical Sciences (1982), M.S. (1985), Ph.D. (1990), Rice University

David B. Johnson's research interests are primarily in the area of wireless and mobile networking protocols. Prior to joining Rice's Department of Computer Science in Fall 2000, Johnson was an Associate Professor of Computer Science at Carnegie Mellon University, where he was a faculty member from 1992-2000.

Johnson is leading the joint Monarch Project between Rice and Carnegie Mellon, developing adaptive networking protocols and protocol interfaces to allow truly seamless wireless and mobile host networking. The scope of this research included protocol design, implementation, performance evaluation, and usage-based validation, spanning areas ranging roughly from portions of the ISO Data Link layer (layer 2) through the Presentation layer (layer 6). The goal of this work is to enable mobile hosts to communicate with each other and with stationary or wired hosts, transparently making the most efficient use of the best network connectivity available to the mobile host at any time. His recent work in this area, together with his students, includes the design and evaluation of the Dynamic Source Routing protocol (DSR), a very efficient and highly adaptive protocol for routing in multi-hop wireless ad hoc networks of mobile hosts.

The Monarch Project is named in reference to the migratory behavior of the monarch butterfly, and is also an acronym for "MObile Networking ARCHitectures." Related to this research, he has also been active for many years in the Internet Engineering Task Force (IETF), the principal protocol standards development organization for the Internet, and was one of the main designers of the IETF Mobile IP protocol for IPv4 and is the primary designer of Mobile IP for IPv6.

Johnson is an executive committee member and treasurer for SIGMOBILE, the ACM Special Interest Group on Mobile Computing and Communications, and an editor for the journals Wireless Networks, Mobile Networks and Applications, Transactions on Networking, and Mobile Computing and Communications Review. He also is an active participant in the Internet Engineering Task Force (IETF), the principal protocol standards development body for the Internet..

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