L
Lennart Johnsson
Researcher at University of Houston
Publications - 23
Citations - 1164
Lennart Johnsson is an academic researcher from University of Houston. The author has contributed to research in topics: Efficient energy use & Software. The author has an hindex of 10, co-authored 21 publications receiving 1142 citations.
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Journal ArticleDOI
The GrADS Project: Software Support for High-Level Grid Application Development
Francine Berman,Andrew A. Chien,Keith D. Cooper,Jack Dongarra,Ian Foster,Dennis Gannon,Lennart Johnsson,Ken Kennedy,Carl Kesselman,John Mellor-Crumme,Daniel A. Reed,Linda Torczon,Rich Wolski +12 more
TL;DR: The goal of the Grid Application Development Software (GrADS) project is to simplify distributed heterogeneous computing in the same way that the World Wide Web simplified information sharing over the Internet.
Journal ArticleDOI
New grid scheduling and rescheduling methods in the GrADS project
Francine Berman,Henri Casanova,Andrew A. Chien,Keith D. Cooper,Holly Dail,Anshuman Dasgupta,W. Deng,Jack Dongarra,Lennart Johnsson,Ken Kennedy,Charles Koelbel,B. Liu,X. Liu,Anirban Mandal,Gabriel Marin,M. Mazina,John Mellor-Crummey,Celso L. Mendes,A. Olugbile,Jignesh M. Patel,Daniel A. Reed,Zhiao Shi,Otto Sievert,Huaxia Xia,Asim YarKhan +24 more
TL;DR: This paper presents recent extensions to the GrADS software framework: a new approach to scheduling workflow computations, applied to a 3-D image reconstruction application; a simple stop/migrate/restart approach to rescheduling Grid applications, application to a QR factorization benchmark; and a process-swapping approach to Rescheduling, applications to an N-body simulation.
Proceedings ArticleDOI
Scheduling strategies for mapping application workflows onto the grid
Anirban Mandal,Ken Kennedy,Charles Koelbel,Gabriel Marin,John Mellor-Crummey,B. Liu,Lennart Johnsson +6 more
TL;DR: The results of the experiments show that the strategy of performance model based, in-advance heuristic workflow scheduling results in 1.5 to 2.2 times better makespan than other existing scheduling strategies.
Proceedings ArticleDOI
New grid scheduling and rescheduling methods in the GrADS project
Keith D. Cooper,Anshuman Dasgupta,Ken Kennedy,Charles Koelbel,Anirban Mandal,Gabriel Marin,M. Mazina,John Mellor-Crummey,Francine Berman,Henri Casanova,Andrew A. Chien,Holly Dail,X. Liu,A. Olugbile,Otto Sievert,Huaxia Xia,Lennart Johnsson,B. Liu,M. Patel,Daniel A. Reed,W. Deng,Celso L. Mendes,Zhiao Shi,Asim YarKhan,Jack Dongarra +24 more
TL;DR: Recent extensions to the GrADS software framework are presented, including a new approach to scheduling workflow computations, applied to a 3D image reconstruction application and a simple stop/migrate/restart approach to rescheduling grid applications.
Proceedings ArticleDOI
Scheduling FFT computation on SMP and multicore systems
TL;DR: A portable framework for the Fast Fourier Transform (FFT) that achieves highiency by automatically adapting to various architectural features is developed and a performance comparison between the UHFFT and FFTW implementations is presented.