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Persson, Tommy
Publications (4 of 4) Show all publications
Doherty, P., Haslum, P., Heintz, F., Merz, T., Nyblom, P., Persson, T. & Wingman, B. (2004). A Distributed Architecture for Autonomous Unmanned Aerial Vehicle Experimentation. In: 7th International Symposium on Distributed Autonomous Robotic Systems,2004 (pp. 221). Toulouse: LAAS
Open this publication in new window or tab >>A Distributed Architecture for Autonomous Unmanned Aerial Vehicle Experimentation
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2004 (English)In: 7th International Symposium on Distributed Autonomous Robotic Systems,2004, Toulouse: LAAS , 2004, p. 221-Conference paper, Published paper (Refereed)
Place, publisher, year, edition, pages
Toulouse: LAAS, 2004
National Category
Computer Sciences
Identifiers
urn:nbn:se:liu:diva-22988 (URN)2362 (Local ID)2362 (Archive number)2362 (OAI)
Available from: 2009-10-07 Created: 2009-10-07 Last updated: 2018-01-13
Engman, M., Persson, T. & Fritzson, P. (1998). Generating Parallel Graphics Code from Symbolic-algebra Specifications. In: : . Paper presented at CPC’98 – the 7:th International Workshop on Compilers for Parallel Computers, Linköping, Sweden, June 29 - July 1, 1998.
Open this publication in new window or tab >>Generating Parallel Graphics Code from Symbolic-algebra Specifications
1998 (English)Conference paper, Published paper (Refereed)
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:liu:diva-110158 (URN)
Conference
CPC’98 – the 7:th International Workshop on Compilers for Parallel Computers, Linköping, Sweden, June 29 - July 1, 1998
Available from: 2014-09-03 Created: 2014-09-03 Last updated: 2014-10-02
Fritzson, D., Fritzson, P., Nordling, P. & Persson, T. (1997). Rolling Bearing Simulation on MIMD Computers. The international journal of high performance computing applications, 11(4), 299-313
Open this publication in new window or tab >>Rolling Bearing Simulation on MIMD Computers
1997 (English)In: The international journal of high performance computing applications, ISSN 1094-3420, E-ISSN 1741-2846, Vol. 11, no 4, p. 299-313Article in journal (Refereed) Published
Abstract [en]

Rolling bearing simulations are very computationally in tensive. Serial simulations may take weeks to execute, and there is a need to use the potential of parallel comput ing. The specific structure of the rolling bearing problem is used to develop suitable scheduling strategies. The authors discuss the system of stiff ordinary differential equations arising from a bearing model and show how to numerically solve these ordinary differential equations on parallel computers. Benchmarking results are presented for two test cases on three platforms.

Place, publisher, year, edition, pages
Sage Publications, 1997
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:liu:diva-109754 (URN)10.1177/109434209701100404 (DOI)
Available from: 2014-08-27 Created: 2014-08-27 Last updated: 2017-12-05Bibliographically approved
Persson, T. & Fritzson, P. (1996). Parallel implementation of image reconstruction for the CARABAS long-wave penetrating radar. In: Heather Liddel, lAdrian Colbrook, Bob Hertzberger, Peter Sloot (Ed.), High-Performance Computing and Networking: . Paper presented at International Conference and Exhibition, HPCN EUROPE 1996, Brussels, Belgium, April 15–19, 1996 (pp. 327-332). Springer Berlin/Heidelberg
Open this publication in new window or tab >>Parallel implementation of image reconstruction for the CARABAS long-wave penetrating radar
1996 (English)In: High-Performance Computing and Networking / [ed] Heather Liddel, lAdrian Colbrook, Bob Hertzberger, Peter Sloot, Springer Berlin/Heidelberg, 1996, p. 327-332Conference paper, Published paper (Refereed)
Abstract [en]

CARABAS (Coherent All RAdio BAnd Sensing) is a new type of radar that has the unique property of being able to penetrate through vegetation, and to some extent into upper levels of soil depending on water content. This can be done by using long radar waves in the range 3–15 meters, and new algorithms for image reconstruction from information in reflected radar waves. These algorithms are related to methods used for computer tomography, and are very computationally expensive. Two classes of algorithms for image reconstruction are direct Fourier methods and filtered backprojection. Even though filtered backprojection is more computationally demanding, we chose that method since it is easier to parallelize, it has better real-time properties, and it is easier to compensate for disturbances and achieve good image quality.

In this paper we report results from the first parallel implementation of the CARABAS algorithms. The benchmarking was done on a Parsytec PowerGC MIMD computer with 128 PowerPC 601 processors. We come close to achieving the real-time requirement for significant parts of the computation.

Place, publisher, year, edition, pages
Springer Berlin/Heidelberg, 1996
Series
Lecture Notes in Computer Science, ISSN 0302-9743, E-ISSN 1611-3349 ; 1067
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:liu:diva-110146 (URN)10.1007/3-540-61142-8_566 (DOI)978-3-540-61142-4 (ISBN)978-3-540-49955-8 (ISBN)
Conference
International Conference and Exhibition, HPCN EUROPE 1996, Brussels, Belgium, April 15–19, 1996
Available from: 2014-09-03 Created: 2014-09-03 Last updated: 2018-02-12Bibliographically approved
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