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A data-parallel approach to multiblock flow computations

✍ Scribed by M. L. Sawley; J. K. Tegnér

Publisher
John Wiley and Sons
Year
1994
Tongue
English
Weight
869 KB
Volume
19
Category
Article
ISSN
0271-2091

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✦ Synopsis

Multiblock methods are often employed to compute flows in complex geometries. While such methods lend themselves in a natural way to coarse-grain parallel processing by the distribution of different blocks to different processors, in some situations a fine-grain data-parallel implementation may be more appropriate. A study is presented of the resolution of the Euler equations for compressible flow on a block-structured mesh, illustrating the advantages of the data-parallel approach. Particular emphasis is placed on a dynamic block management strategy that allows computations to be undertaken only for blocks where useful work is to be performed. In addition, appropriate choices of initial and boundary conditions that enhance solution convergence are presented. Finally, code portability between five different massively parallel computer systems is examined and an analysis of the performance results obtained on different parallel systems is presented.

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