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Paper IX.2

Parallelising Cellular Automata for the Modelling of Accretion Disks in Close Binary Systems

G. Gorman, N. Wilson and A. Shearer

Scientific Computing Group, Information Technology Centre, National University of Ireland, Galway, Ireland

doi:10.4203/ccp.57.9.2

G. Gorman, N. Wilson, A. Shearer, "Parallelising Cellular Automata for the Modelling of Accretion Disks in Close Binary Systems", in B.H.V. Topping, (Editor), "Developments in Computational Mechanics with High Performance Computing", Civil-Comp Press, Edinburgh, UK, pp 183-186, 1999. doi:10.4203/ccp.57.9.2

Abstract

In this paper we demonstrate the use of cellular automata as a modelling tool and examine issues concerning the parallelisation of these models. Motivations for using cellular automata rather than a more traditional methods include sensitivities to fluctuations in the system (which can be smoothened out when differential equations are applied) and shorter computation time. The process which we will be concerned with involves the "flickering" in optical emission from cataclysmic variables. We implement a simple cellular automata model, proposed by Yonehara et al., in parallel. We present speed-up efficiencies for the Cray T3D and a Dec Alpha cluster and discuss the implications of results obtained.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 57 DEVELOPMENTS IN COMPUTATIONAL MECHANICS WITH HIGH PERFORMANCE COMPUTING Edited by: B.H.V. Topping Paper IX.2 Parallelising Cellular Automata for the Modelling of Accretion Disks in Close Binary Systems G. Gorman, N. Wilson and A. Shearer Scientific Computing Group, Information Technology Centre, National University of Ireland, Galway, Ireland doi:10.4203/ccp.57.9.2 purchase the full-text of this paper Full Bibliographic Reference for this paper G. Gorman, N. Wilson, A. Shearer, "Parallelising Cellular Automata for the Modelling of Accretion Disks in Close Binary Systems", in B.H.V. Topping, (Editor), "Developments in Computational Mechanics with High Performance Computing", Civil-Comp Press, Edinburgh, UK, pp 183-186, 1999. doi:10.4203/ccp.57.9.2 Abstract In this paper we demonstrate the use of cellular automata as a modelling tool and examine issues concerning the parallelisation of these models. Motivations for using cellular automata rather than a more traditional methods include sensitivities to fluctuations in the system (which can be smoothened out when differential equations are applied) and shorter computation time. The process which we will be concerned with involves the "flickering" in optical emission from cataclysmic variables. We implement a simple cellular automata model, proposed by Yonehara et al., in parallel. We present speed-up efficiencies for the Cray T3D and a Dec Alpha cluster and discuss the implications of results obtained. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £70 +P&P)
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