Simulating and Benchmarking the Shallow-Water Fluid Dynamical Equations on Multiple Graphical Processing Units

Playne, D. P., Hawick, K. A. and Johnson, M. G. B.

The shallow-water model equations provide a simple yet realistic benchmark problem in computational fluid dynamics (CFD) that can be implemented on a variety of computational platforms. Graphical Processing Units can be used to accelerate such problems either singly using a data parallel decompositional scheme or with multiple devices using a domain decompositional approach. We implement the SW equations on a range of modern GPUs with both parallel schemes and report on the typical performance. We compare integer optimised GPUs and very modern floating-point intensive GPU devices such as NVidia\'s Kepler K20X, and also investigate different m-GPU communication methods for geometric decompositions. We give detailed performance results and a summary of the main parallelisation issues.

Cite as: Playne, D. P., Hawick, K. A. and Johnson, M. G. B. (2014). Simulating and Benchmarking the Shallow-Water Fluid Dynamical Equations on Multiple Graphical Processing Units. In Proc. Twelfth Australasian Symposium on Parallel and Distributed Computing (AusPDC 2014) Auckland, New Zealand. CRPIT, 152. Javadi, B. and Garg, S. K. Eds., ACS. 29-36

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