Jack Dongarra Computer Science Department, University of Tennessee, 1122 Volunteer Boulevard, Knoxville, Tennessee 37996 (dongarra@cs.utk.edu). Dr. Dongarra is a University Distinguished Professor of Computer Science in the Computer Science Department at the University of Tennessee. He holds the title of Distinguished Research Staff in the Computer Science and Mathematics Division at Oak Ridge National Laboratory (ORNL), and is an Adjunct Professor in the Computer Science Department at Rice University. Dr. Dongarra specializes in numerical algorithms in linear algebra, parallel computing, the use of advanced-computer architectures, programming methodology, and tools for parallel computers. 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 a coauthor of several books. He was awarded the IEEE Sid Fernbach Award in 2004 for his contributions in the application of high-performance computers using innovative approaches. Dr. Dongarra is a Fellow of the AAAS, ACM, and the IEEE, and is a member of the National Academy of Engineering.

George Bosilca Innovative Computing Laboratory, Computer Science Department, University of Tennessee, 1122 Volunteer Boulevard, Knoxville, Tennessee 37996 (bosilca@cs.utk.edu). Dr. Bosilca is a Senior Research Associate at the Innovative Computing Laboratory (ICL). He received a Ph.D. degree in parallel architectures from the Université de Paris XI. He was the main developer of the channel memory subsystem for MPICH-V. Dr. Bosilca is currently working on the Open MPI project.

Zizhong Chen Computer Science Department, University of Tennessee, 1122 Volunteer Boulevard, Knoxville, Tennessee 37996 (zchen@cs.utk.edu). Mr. Chen is a Ph.D. candidate in computer science at the University of Tennessee. He received a B.S. degree in mathematics from Beijing Normal University, China, and an M.S. degree in computer science from the University of Tennessee. His research interests are primarily in the areas of high-performance computing, parallel and distributed systems, fault tolerance and checkpoint, scientific computing, and numerical software for high-performance computers. Mr. Chen is currently involved in several high-performance computing projects, including SANS, fault-tolerant MPI, and LFC.

Victor Eijkhout Computer Science Department, University of Tennessee, 1122 Volunteer Boulevard, Knoxville, Tennessee 37996 (eijkhout@cs.utk.edu). Dr. Eijkhout holds a Ph.D. degree in numerical mathematics from the University of Nijmegen, The Netherlands. His research includes numerical linear algebra, distributed computing, and performance modeling and optimization. Dr. Eijkhout recently began investigating statistical and other nonnumerical techniques to solve the problem of choosing the best numerical algorithm.

Graham E. Fagg Computer Science Department, University of Tennessee, 1122 Volunteer Boulevard, Knoxville, Tennessee 37996 (fagg@cs.utk.edu). Dr. Fagg is a Research Associate Professor at the University of Tennessee involved in the development of a number of metacomputing and GRID middleware systems. He received a B.S. degree in computer science and cybernetics from the University of Reading, and a Ph.D. degree in computer science. Dr. Fagg is a member of the IEEE.

Erika Fuentes Innovative Computing Laboratory, Computer Science Department, University of Tennessee, 1122 Volunteer Boulevard, Knoxville, Tennessee 37996 (efuentes@cs.utk.edu). Miss Fuentes is a Graduate Research Assistant at the ICL. She is also a Ph.D. student in the Computer Science Department at the University of Tennessee, where she received an M.S. degree. Miss Fuentes is currently working on the SANS-SALSA project.

Julien Langou Innovative Computing Laboratory, Computer Science Department, University of Tennessee, 1122 Volunteer Boulevard, Knoxville, Tennessee 37996 (langou@cs.utk.edu). Dr. Langou is a Research Scientist. He received a B.Sc. degree in propulsion engineering from École National Supérieure de l'Aéronautique et de l'Espace (SUPAERO), France, and a Ph.D. degree in applied mathematics from the National Institute of Applied Sciences (INSA), France. His research interest is in numerical linear algebra with application in high-performance computing.

Piotr Luszczek Innovative Computing Laboratory, Computer Science Department, University of Tennessee, 1122 Volunteer Boulevard, Knoxville, Tennessee 37996 (luszczek@cs.utk.edu). Dr. Luszczek is a Research Scientist at the ICL. He received a Ph.D. degree in computer science from the University of Tennessee. His current research is focused on numerical linear algebra, parallel processing, benchmarking, and self-adapting software. Dr. Luszczek is one of the core developers of the HPC Challenge Benchmark and the LFC project. He is also an active contributor to LAPACK and ScaLAPACK packages.

Jelena Pjesivac-Grbovic Innovative Computing Laboratory, Computer Science Department, University of Tennessee, 1122 Volunteer Boulevard, Knoxville, Tennessee 37996 (jpjesiva@utk.edu). Ms. Pjesivac-Grbovic is a Graduate Research Assistant at the ICL, working toward a Ph.D. degree in computer science. She received a B.S. degree in computer science and physics from Ramapo College of New Jersey. Her research interests are parallel communication libraries and computer architectures, scientific and grid computing, and modeling of biophysical systems.

Keith Seymour Innovative Computing Laboratory, Computer Science Department, University of Tennessee, 1122 Volunteer Boulevard, Knoxville, Tennessee 37996 (seymour@cs.utk.edu). Mr. Seymour is a Senior Research Associate at the ICL. He received an M.S. degree in computer science from the University of Tennessee. His research interests include grid computing and empirical code optimization.

Haihang You Innovative Computing Laboratory, Computer Science Department, University of Tennessee, 1122 Volunteer Boulevard, Knoxville, Tennessee 37996 (you@cs.utk.edu). Mr. You is a Research Associate at the ICL. He received an M.S. degree in computer science from the University of Tennessee. His research interests include performance analysis and empirical code optimization.

Sathish S. Vadhiyar Supercomputer Education and Research Centre, Indian Institute of Science, Bangalore 560012, India (vss@serc.iisc.ernet.in). Dr. Vadhiyar is an Assistant Professor at the Supercomputer Education and Research Centre, Bangalore. He received a B.E. degree in computer science and engineering from Thiagarajar College of Engineering, India, an M.S. degree in computer science from Clemson University, and a Ph.D. degree in computer science from the University of Tennessee. Dr. Vadhiyar's research interests include parallel and grid computing.