کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
431530 688570 2012 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
An MPI-CUDA implementation of an improved Roe method for two-layer shallow water systems
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نظریه محاسباتی و ریاضیات
پیش نمایش صفحه اول مقاله
An MPI-CUDA implementation of an improved Roe method for two-layer shallow water systems
چکیده انگلیسی

The numerical solution of two-layer shallow water systems is required to simulate accurately stratified fluids, which are ubiquitous in nature: they appear in atmospheric flows, ocean currents, oil spills, etc. Moreover, the implementation of the numerical schemes to solve these models in realistic scenarios imposes huge demands of computing power. In this paper, we tackle the acceleration of these simulations in triangular meshes by exploiting the combined power of several CUDA-enabled GPUs in a GPU cluster. For that purpose, an improvement of a path conservative Roe-type finite volume scheme which is specially suitable for GPU implementation is presented, and a distributed implementation of this scheme which uses CUDA and MPI to exploit the potential of a GPU cluster is developed. This implementation overlaps MPI communication with CPU–GPU memory transfers and GPU computation to increase efficiency. Several numerical experiments, performed on a cluster of modern CUDA-enabled GPUs, show the efficiency of the distributed solver.


► Acceleration of two-layer shallow water system simulations on GPU clusters.
► Improvement of a Roe-type finite volume scheme, suitable for CUDA-enabled GPUs.
► Overlapping communication and computation with MPI and CUDA.
► Management of unstructured meshes on a distributed multi-GPU platform.
► Weak and strong scaling close to perfect.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Parallel and Distributed Computing - Volume 72, Issue 9, September 2012, Pages 1065–1072
نویسندگان
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