NDLI: Optimized GPU based simulation of the incompressible Navier-Stokes equations on a MAC grid

Content Provider	IEEE Xplore Digital Library
Author	Itu, L.M. Suciu, C. Moldoveanu, F. Postelnicu, A.
Copyright Year	2011
Description	Author affiliation: Department of Automatics, Transilvania Univeristy of Brasov, Romania (Itu, L.M.; Suciu, C.; Moldoveanu, F.; Postelnicu, A.)
Abstract	The paper introduces an optimized GPU based implementation of the incompressible Navier-Stokes equations which are solved using the artificial compressibility method. The numerical scheme is based on a finite difference method. The domain on which the simulations have been performed is a backward facing step problem and the discretizations have been carried out on a MAC grid. The most time consuming parts, i.e. the computations of the velocities and of the pressure values, have been moved onto the GPU. Two separate kernels have been defined because there is no communication between the blocks of the GPU grid. Several optimization strategies have incrementally increased the performance of the two kernels. The most important ones are: coalesced global memory, reduced read and copy operations and optimum usage of shared memory. The results of the comparison between the CPU and GPU performance indicate a speed-up which varies from just under one order of magnitude for the coarsest grid up to two orders of magnitude for the finest grid.
Starting Page	1
Ending Page	4
File Size	516066
Page Count	4
File Format	PDF
ISBN	9781457712333
ISSN	20681038
e-ISBN	9781457712357
DOI	10.1109/RoEduNet.2011.5993692
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-06-23
Publisher Place	Romania
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	MAC grid Speed-up Instruction sets Computational fluid dynamics Kernel GPU Equations Optimization Graphics processing unit Navier-Stokes equations
Content Type	Text
Resource Type	Article

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