Vectorized Monte Carlo molecular aerodynamics simulation of the Reyleigh problem

Authors:
D. V. Pryor;P. J. Burns
Affiliations:
Supercomputing Research Center, 4380 Forbes Boulevard, Lanhamm, MD;Department of Mechanical Engineering, Colorado State University, Fort Collins, Colorado
Venue:
Proceedings of the 1988 ACM/IEEE conference on Supercomputing
Year:
1988

Citing 0
Cited 3

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Vector architectures: past, present and future

ICS '98 Proceedings of the 12th international conference on Supercomputing

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Abstract

A fully vectorized version of a 1-dimensional Monte Carlo algorithm applied to molecular aerodynamics is presented. The algorithm is applied to the Rayleigh problem, an impulsively accelerated, heated flat plate, and is implemented on the CYBER 205. Issues relating to the details of vectorization, including the use of bit addressability, the maintaining of long vector lengths, and vector gather/scatter use, are discussed. Speedup factors due to vectorization in the range of 5 to 18 are reported, and depend upon problem parameters. The results indicate that, under certain circumstances, the problem performs well on vector architectures.