High Performance Computing and Grid in Asia Pacific Region, International Conference on (1997)

Seoul, Korea

Apr. 28, 1997 to May 2, 1997

ISBN: 0-8186-7901-8

pp: 93

S. Chongwe , East Asia Technol. Network, Silicon Graphics Comput. Syst., Mountain View, CA, USA

ABSTRACT

A complex compressible Navier-Stokes equation using a time-accurate implicit difference scheme is parallelized using domain decomposition (DD) and loop parallelization methods. The numerical scheme used is a lower-upper alternating direction implicit (LU-ADI) factorization method with a Baldwin-Lomax (1978) turbulence model. This paper gives a preliminary result on the performance of the code on a distributed shared memory machine. The convergence rate and computational speed-up of these two methods are illustrated in the described numerical experiment. Generally, the loop parallelization shows better convergence and scaled speed-up than the domain decomposition method.

INDEX TERMS

aerodynamics; aerodynamics simulation; distributed shared-memory machine; compressible Navier-Stokes equation; time-accurate implicit difference scheme; domain decomposition; loop parallelization; numerical scheme; lower-upper alternating direction implicit factorization method; Baldwin-Lomax turbulence model; code performance; convergence rate; computational speedup

CITATION

S. Chongwe, "Simulation of aerodynamics problem on a distributed shared-memory machine,"

*High Performance Computing and Grid in Asia Pacific Region, International Conference on(HPCASIA)*, Seoul, Korea, 1997, pp. 93.

doi:10.1109/HPC.1997.592129

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