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Lennart Johnsson
University of Houston - TLC2Department: Computer ScienceAddress: 501 PGH Hall University of Houston Dept. of Computer Science Houston, TX 77204-3010 Phone: 713-743-3371 Fax: 713-743-3376 Email: johnsson@cs.uh.edu Web: www.cs.uh.edu/~johnsson/ |
Education
B.S.,Electrical Engineering, Ingenjör Tekniska Läroverket Västeras, Sweden (1963)
M.S. ,Engineering Physics, Civilingenjör Chalmers Institute of Technology, Göteborg, Sweden(1969)
Ph.D. Control Engineering, Tekn. Lic.,Chalmers Institute of Technology, Göteborg, Sweden (1971)
Systems Science Department, UCLA, Los Angeles, CA, 1970 - 1971
Honors
John Ericson Medal, Chalmers Institute of Technology, 1967
Honorary mention (2nd place), Best Paper Award competition, the 1984 Design Automation Conference, for Generation of Layouts from Circuit Schematics: A Graph Theoretic Approach (with Tak?Kwong Ng)
Outstanding Paper Award, the 1986 International Conference for Parallel Processing, for Distributed Routing Algorithms for Broadcasting and Personalized Communication in Hypercubes (with Ching?Tien Howard Ho).
``Impressive Entry'' recognition, the 1994 Gordon Bell Prize contest for performance (with Yu Hu).
Next Generation Infrastructure Award, 1998, Globus project (as project participant, leaders Foster, Kesselman).
Research Topic
Computational Science
Research Description
Professor Johnsson's research interests are in the areas of computational and data Grids, high-performance scientific computation, parallel algorithms, adaptive, Grid-aware, high-performance software and tools for creation thereof, middleware for Grids and parallel computers, especially communications related middleware, performance modelling, and problem solving environments. Grid-aware software adapts its behavior both with respect to the execution environment in which it is used and the application it serves.
The research is carried out through a number of national collaborative projects. Scientific software for high-performance platforms and computational Grids with a focus on software libraries is developed with support from the Los Alamos Computer Science Institute (LACSI) funded by the Department of Energy under its Accelerated Strategic Computing Initiative. Research in tools and techniques for building adaptive, Grid-aware libraries is an integral part of the Grid Application Development Software
(GrADS) project funded by the National Science Foundation (NSF) under its Next Generation Software initiative. The development of scientific software libraries for computational Grids is also in part supported by the Alliance partnership, one of two NSF funded Partnerships for Advanced Computational Infrastructure. Currently, our effort is focused on developing adaptive FFT software. The Simulation Data Base (SimDB) project aimes at creating a software environment for simulation and analysis of molecular dynamics trajectory data in a Grid environment. It is pursued jointly with the Institue for Molecular Design (IMD) at the University of Houston. This effort is funded in part through the National Partnership for Advanced Computational Infrastructure (NPACI).
Selected Publications
- Ken Kennedy, Bradley Broom, Keith Cooper, Jack Dongarra, Rob Fowler, Dennis Gannon, Lennart Johnsson, John Mellor-Crummy and Linda Torczon, (to appear) Telescoping Languages: A Survey for Automatic Generation of Scientific Problem Solving Systems from Annotated Libraries, Journal of Parallel and Distributed Computing.
- Francine Berman, Andrew Chien, Keith Cooper, Jack Dongarra, Ian Foster, Dennis Gannon, Lennart Johnsson, Ken Kennedy, Carl Kesselman, John Mellor-Crummey, Dan Reed, Linda Torczon and Rich Wolski, (to appear) The GrADS Project: Software Support for High-Level Grid Application Development, Journal on Supercomputer Applications and High-Performance Computing.
- Automatic Performance Tuning in the UHFFT Library,The 2001 International Conference on Computational Science,ICCS 2001, May 28 - 30, 2001 Hilton San Francisco and Towers, San Francisco, USA
- Y.C. Hu, G. Jin, L. Johnsson, D. Kehagias, and N. Shalaby. (2000). HPFBench: A High Performance Fortran Benchmark Suite. In: ACM Transaction on Mathematical Software 26:1
- Michael Feig, Matin Abdullah, Lennart Johnsson and Montgomery Pettitt,(1999) "Large Scale Data Repository: Design of a Molecular Dynamics Trajectory Database", Future Generation Computer Systems, Elsevier, North-Holland, 16(1), pp. 101 - 110.
- Y.C. Hu, S.-H. Teng, and L. Johnsson. (1997). High Performance Fortran for Highly Irregular Problems. In: Proc. of the 6th ACM SIGPLAN Symposium on Principles and Practice of Parallel Programming. ACM Press, pp. 13-24
- Yu Hu, Lennart Johnsson (1996)A Data Parallel Implementation of Hierarchical Nbody Methods, in the International Journal of Supercomputer Applications, vol. 10, no. 1, pp. 3 - 40.
- Lennart Johnsson, (1995)“Data Partitioning for Load-Balance and Communication Bandwidth Preservation”, Proceedings of The Second International Conference on Massively Parallel Processing using Optical Interconnections, IEEE Computer Soc. Press, pp. 214-219, .
- Zdenek Johan, Kapil K. Mathur, S. Lennart Johnsson and Thomas J.R. Hughes, (1994)Scalability of Finite Element Applications on Distributed Memory Parallel Computers, in Computer Methods in Applied Mechanics and Engineering, vol. 119, nos. 1 - 2, pp. 61 - 72, November .
- Kapil K. Mathur, Lennart Johnsson (1994) High Performance, Scalable Scientific Software Libraries, , in Portability and Performance in Parallel Processing, pp. 159 - 208, John Wiley & Sons.
- Woody Lichtenstein, Lennart Johnsson, (1993) Block Cyclic Dense Linear Algebra, SIAM J. of Sci. Comp., vol. 14, no. 6, pp. 1257 1286.
Lab Members
Current Graduate Students
Former Grad Students
Current Post Docs
Former Post Docs
Lab Photos
Last edited on: June 27, 2002