PAIR INTERACTION LATTICE GAS ON GENERAL PURPOSE COMPUTERS: FORTRAN OR C?

Dieter Wolf-Gladrow and Armin Vogeler
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Dieter Wolf-Gladrow: Alfred Wegener Institute for Polar and Marine Research, D-2850 Bremerhaven, F R Germany
Armin Vogeler: Alfred Wegener Institute for Polar and Marine Research, D-2850 Bremerhaven, F R Germany

International Journal of Modern Physics C (IJMPC), 1992, vol. 03, issue 06, 1179-1187

Abstract: We report on performance tests of pair interaction lattice gas automata in two and three dimensions coded in FORTRAN and C. The programs have been run on ALLIANT/FX-80, ALLIANT/FX-2800, CONVEX C2, CRAY-YMP, NEC/SX3, and SUN/IPC. The maximum update rates are 200 million site updates per second on the NEC/SX3 (FORTRAN), 117 (2D version) and 29 (3D version) on the CRAY-YMP (C). As a byproduct we give results for the performance of integer arithmetic and bit operations. Usually the C-programs were somewhat faster than the FORTRAN-programs except on the NEC/SX3 where the C-compiler was not able to vectorize the main loops.

Keywords: Cellular Automata; Hydrodynamics; Multi-spin Coding; Parallel Program-ming; FORTRAN; C (search for similar items in EconPapers)
Date: 1992
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DOI: 10.1142/S0129183192000804

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