Culises: A Library for Accelerated CFD on Hybrid GPU-CPU Systems
Culises: A Library for Accelerated CFD on Hybrid GPU-CPU Systems
Culises: A Library for Accelerated CFD on Hybrid GPU-CPU Systems
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Example resultsDrivAER 3M grid cells• Speedup with single <strong>GPU</strong>Solver<strong>CPU</strong>Solver<strong>GPU</strong>Fracti<strong>on</strong>fSpeedups =11 − f + f aTheoreticalmaximumSpeedups max = 11 − f<strong>GPU</strong>-accelerati<strong>on</strong>speeduplinear solveraEfficieny E =ss maxGAMG 1DICPCGDiag<strong>on</strong>alPCGAMGPCGDiag<strong>on</strong>alPCGDiag<strong>on</strong>alPCG0.55 1.56 2.22 3.3668%0.78 2.7 4.55 5.860%0.87 4.9 7.7 11.664%1. GAMG: Generalized geometric-algebraic Multigrid solvergeometric agglomerati<strong>on</strong> based <strong>on</strong> grid faces areaSlide 14<str<strong>on</strong>g>Culises</str<strong>on</strong>g> - A <str<strong>on</strong>g>Library</str<strong>on</strong>g> <str<strong>on</strong>g>for</str<strong>on</strong>g> <str<strong>on</strong>g>Accelerated</str<strong>on</strong>g> <str<strong>on</strong>g>CFD</str<strong>on</strong>g> <strong>on</strong> <strong>Hybrid</strong> <strong>GPU</strong>-<strong>CPU</strong> <strong>Systems</strong>B. Landmann
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