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tMade find_u operation OpenMP parallel - lbm-d3q19 - 3D lattice-Boltzmann code … |
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git clone git://src.adamsgaard.dk/lbm-d3q19 |
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LICENSE |
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--- |
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commit b76cc7f8ed01abbed03e020b96b72e66c6407ecc |
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parent 1e0a6e6406bfb66a9c64fb94e8370ea2513ecea7 |
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Author: Anders Damsgaard <[email protected]> |
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Date: Sun, 22 Sep 2013 17:19:06 +0200 |
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Made find_u operation OpenMP parallel |
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Diffstat: |
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M Makefile | 2 +- |
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M lbm.c | 8 +++----- |
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2 files changed, 4 insertions(+), 6 deletions(-) |
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--- |
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diff --git a/Makefile b/Makefile |
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t@@ -1,4 +1,4 @@ |
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-CFLAGS=-g -Wall -pg -O2 |
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+CFLAGS=-g -Wall -pg -O2 -fopenmp |
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LDLIBS=-lm |
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BIN=lbm |
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diff --git a/lbm.c b/lbm.c |
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t@@ -2,10 +2,6 @@ |
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#include <stdlib.h> // dynamic allocation |
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#include <math.h> |
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-// Courant kriterie for tidsskridt |
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-// No slip top og bund |
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-// Periodiske sider |
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- |
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// Floating point precision |
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//typedef float Float; |
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typedef double Float; |
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t@@ -40,7 +36,7 @@ const int m = 19; |
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// Time step length |
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//const double dt = 1.0; |
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const double dt = 1.0e-3; |
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-//const double dt = 0.01; |
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+//const double dt = 1.0e-6; |
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// Simulation end time |
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//const Float t_end = 1.5e-4; |
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t@@ -250,6 +246,7 @@ Float3 find_u( |
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Float3 u = {0.0, 0.0, 0.0}; |
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Float f_i; |
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unsigned int i; |
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+#pragma omp parallel for private(f_i,u) |
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for (i=0; i<m; i++) { |
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f_i = f[idxi(x,y,z,i)]; |
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u.x += f_i*e[i].x/rho; |
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t@@ -299,6 +296,7 @@ void collide( |
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u[idx(x,y,z)] = u_new; |
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// Find new f values by fluid particle collision |
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+//#pragma omp parallel for |
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for (i=0; i<m; i++) { |
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f[idxi(x,y,z,i)] = |
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bgk(f[idxi(x,y,z,i)], tau(), rho_new, |
