DocumentCode :
1499757
Title :
Speedup of FEM Micromagnetic Simulations With Graphical Processing Units
Author :
Kákay, Attila ; Westphal, Elmar ; Hertel, Riccardo
Author_Institution :
Inst. fur Festkorperforschung, Forschungszentrum Julich GmbH, Julich, Germany
Volume :
46
Issue :
6
fYear :
2010
fDate :
6/1/2010 12:00:00 AM
Firstpage :
2303
Lastpage :
2306
Abstract :
We have adapted our finite element micromagnetic simulation software to the massively parallel architecture of graphical processing units (GPUs) with double-precision floating point accuracy. Using the example of Standard Problem #4 with different numbers of discretization points, we demonstrate the high speed performance of a single GPU compared with an OpenMP-parallelized version of the code using eight CPUs. The adaption of both the magnetostatic field calculation and the time integration of the Landau-Lifshitz-Gilbert equation routines can lead to a speedup factor of up to four. The gain in computation performance of the GPU code increases with increasing number of discretization nodes. The computation time required for high-resolution micromagnetic simulations of the magnetization dynamics in large magnetic samples can thus be reduced effectively by employing GPUs.
Keywords :
computer graphic equipment; coprocessors; finite element analysis; magnetic fields; micromagnetics; parallel architectures; GPU; Landau-Lifshitz-Gilbert equation; double precision floating point accuracy; finite element micromagnetic simulation; graphical processing unit; magnetization dynamics; magnetostatic field calculation; parallel architecture; simulation software; Code standards; Computational modeling; Concurrent computing; Equations; Finite element methods; Graphics; Magnetization; Magnetostatics; Micromagnetics; Parallel architectures; Finite element methods; graphics processing units; micromagnetism;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/TMAG.2010.2048016
Filename :
5467640
Link To Document :
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