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advec_cell_knl.cl
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advec_cell_knl.cl
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/*Crown Copyright 2012 AWE.
*
* This file is part of CloverLeaf.
*
* CloverLeaf is free software: you can redistribute it and/or modify it under
* the terms of the GNU General Public License as published by the
* Free Software Foundation, either version 3 of the License, or (at your option)
* any later version.
*
* CloverLeaf is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License along with
* CloverLeaf. If not, see http://www.gnu.org/licenses/. */
/**
* @brief OCL device-side advection cell kernels
* @author Andrew Mallinson, David Beckingsale, Wayne Gaudin
* @details Performs a second order advective remap using van-Leer limiting
* with directional splitting.
*/
#include "ocl_knls.h"
__kernel void advec_cell_xdir_section1_sweep1_kernel(
__global const double *restrict volume,
__global const double *restrict vol_flux_x,
__global const double *restrict vol_flux_y,
__global double *restrict pre_vol,
__global double *restrict post_vol)
{
int k = get_global_id(1);
int j = get_global_id(0);
if ( (j<=XMAXPLUSTHREE) && (k<=YMAXPLUSTHREE)) {
pre_vol[ARRAYXY(j,k,XMAXPLUSFIVE)] = volume[ARRAYXY(j,k,XMAXPLUSFOUR)]
+ (vol_flux_x[ARRAYXY(j+1,k,XMAXPLUSFIVE)] - vol_flux_x[ARRAYXY(j,k,XMAXPLUSFIVE)]
+ vol_flux_y[ARRAYXY(j,k+1,XMAXPLUSFOUR)] - vol_flux_y[ARRAYXY(j,k,XMAXPLUSFOUR)]);
post_vol[ARRAYXY(j,k,XMAXPLUSFIVE)] = pre_vol[ARRAYXY(j,k,XMAXPLUSFIVE)] -(vol_flux_x[ARRAYXY(j+1,k,XMAXPLUSFIVE)] - vol_flux_x[ARRAYXY(j,k,XMAXPLUSFIVE)] );
}
}
__kernel void advec_cell_xdir_section1_sweep2_kernel(
__global const double * restrict volume,
__global const double * restrict vol_flux_x,
__global double * restrict pre_vol,
__global double * restrict post_vol)
{
int k = get_global_id(1);
int j = get_global_id(0);
if ((j<=XMAXPLUSTHREE) && (k<=YMAXPLUSTHREE)) {
pre_vol[ARRAYXY(j,k,XMAXPLUSFIVE)] = volume[ARRAYXY(j,k,XMAXPLUSFOUR)] + vol_flux_x[ARRAYXY(j+1,k,XMAXPLUSFIVE)] - vol_flux_x[ARRAYXY(j,k,XMAXPLUSFIVE)];
post_vol[ARRAYXY(j,k,XMAXPLUSFIVE)] = volume[ARRAYXY(j,k,XMAXPLUSFOUR)];
}
}
__kernel void advec_cell_xdir_section2_kernel(
__global const double * restrict vertexdx,
__global const double * restrict density1,
__global const double * restrict energy1,
__global double * restrict mass_flux_x,
__global const double * restrict vol_flux_x,
__global const double * restrict pre_vol,
__global double * restrict ener_flux)
{
int upwind, donor, downwind, dif;
double sigma, sigmat, sigmav, sigmam, sigma3, sigma4;
double diffuw, diffdw, limiter;
__const double one_by_six=1.0/6.0;
int k = get_global_id(1);
int j = get_global_id(0);
if ((j>=2) && (j<=XMAXPLUSTHREE) && (k>=2) && (k<=YMAXPLUSONE)) {
if ( vol_flux_x[ARRAYXY(j, k, XMAXPLUSFIVE)] > 0.0 ) {
upwind = j-2;
donor = j-1;
downwind = j;
dif = donor;
} else {
upwind = min(j+1,XMAXPLUSTWO);
donor = j;
downwind = j-1;
dif = upwind;
}
sigmat = fabs( vol_flux_x[ARRAYXY(j,k,XMAXPLUSFIVE)] ) / pre_vol[ARRAYXY(donor,k,XMAXPLUSFIVE)];
sigma3 = (1.0 + sigmat)*( vertexdx[j] / vertexdx[dif] );
sigma4 = 2.0 - sigmat;
sigma = sigmat;
sigmav = sigmat;
diffuw = density1[ARRAYXY(donor,k,XMAXPLUSFOUR)] - density1[ARRAYXY(upwind,k,XMAXPLUSFOUR)];
diffdw = density1[ARRAYXY(downwind,k,XMAXPLUSFOUR)] - density1[ARRAYXY(donor,k,XMAXPLUSFOUR)];
if (diffuw*diffdw > 0.0) {
limiter = (1.0 - sigmav) * copysign(1.0,diffdw) * fmin(fabs(diffuw), fmin( fabs(diffdw), one_by_six*(sigma3 * fabs(diffuw) + sigma4 * fabs(diffdw) ) ) );
} else {
limiter = 0.0;
}
mass_flux_x[ARRAYXY(j,k,XMAXPLUSFIVE)] = vol_flux_x[ARRAYXY(j,k,XMAXPLUSFIVE)] *
( density1[ARRAYXY(donor,k,XMAXPLUSFOUR)] + limiter );
sigmam = fabs( mass_flux_x[ARRAYXY(j,k,XMAXPLUSFIVE)] ) / ( density1[ARRAYXY(donor,k,XMAXPLUSFOUR)] *
pre_vol[ARRAYXY(donor,k,XMAXPLUSFIVE)] );
diffuw = energy1[ARRAYXY(donor,k,XMAXPLUSFOUR)] - energy1[ARRAYXY(upwind,k,XMAXPLUSFOUR)];
diffdw = energy1[ARRAYXY(downwind,k,XMAXPLUSFOUR)] - energy1[ARRAYXY(donor,k,XMAXPLUSFOUR)];
if (diffuw*diffdw > 0.0) {
limiter = (1.0 - sigmam) * copysign(1.0,diffdw) * fmin(fabs(diffuw), fmin( fabs(diffdw), one_by_six * (sigma3 * fabs(diffuw) + sigma4 * fabs(diffdw) ) ) );
} else {
limiter = 0.0;
}
ener_flux[ARRAYXY(j,k,XMAXPLUSFIVE)] = mass_flux_x[ARRAYXY(j,k,XMAXPLUSFIVE)] *
( energy1[ARRAYXY(donor,k,XMAXPLUSFOUR)] + limiter );
}
}
__kernel void advec_cell_xdir_section3_kernel(
__global double * restrict density1,
__global double * restrict energy1,
__global const double * restrict mass_flux_x,
__global const double * restrict vol_flux_x,
__global const double * restrict pre_vol,
__global double * restrict pre_mass,
__global double * restrict post_mass,
__global double * restrict advec_vol,
__global double * restrict post_ener,
__global const double * restrict ener_flux)
{
int k = get_global_id(1);
int j = get_global_id(0);
if ((j>=2) && (j<=XMAXPLUSONE) && (k>=2) && (k<=YMAXPLUSONE)) {
pre_mass[ARRAYXY(j,k,XMAXPLUSFIVE)] = density1[ARRAYXY(j, k, XMAXPLUSFOUR)] * pre_vol[ARRAYXY(j, k, XMAXPLUSFIVE)];
post_mass[ARRAYXY(j,k,XMAXPLUSFIVE)] = pre_mass[ARRAYXY(j, k, XMAXPLUSFIVE)] +
mass_flux_x[ARRAYXY(j , k, XMAXPLUSFIVE)] -
mass_flux_x[ARRAYXY(j+1, k, XMAXPLUSFIVE)];
post_ener[ARRAYXY(j,k,XMAXPLUSFIVE)] = ( energy1[ARRAYXY(j, k, XMAXPLUSFOUR)] *
pre_mass[ARRAYXY(j, k, XMAXPLUSFIVE)] +
ener_flux[ARRAYXY(j , k, XMAXPLUSFIVE)] -
ener_flux[ARRAYXY(j+1, k, XMAXPLUSFIVE)] )
/ post_mass[ARRAYXY(j, k, XMAXPLUSFIVE)];
advec_vol[ARRAYXY(j,k,XMAXPLUSFIVE)] = pre_vol[ARRAYXY(j, k, XMAXPLUSFIVE)] +
vol_flux_x[ARRAYXY(j , k, XMAXPLUSFIVE)] -
vol_flux_x[ARRAYXY(j+1, k, XMAXPLUSFIVE)];
density1[ARRAYXY(j,k,XMAXPLUSFOUR)] = post_mass[ARRAYXY(j, k, XMAXPLUSFIVE)] /
advec_vol[ARRAYXY(j, k, XMAXPLUSFIVE)];
energy1[ARRAYXY(j, k, XMAXPLUSFOUR)] = post_ener[ARRAYXY(j, k, XMAXPLUSFIVE)];
}
}
__kernel void advec_cell_ydir_section1_sweep1_kernel(
__global const double * restrict volume,
__global const double * restrict vol_flux_x,
__global const double * restrict vol_flux_y,
__global double * restrict pre_vol,
__global double * restrict post_vol)
{
int k = get_global_id(1);
int j = get_global_id(0);
if ( (j<=XMAXPLUSTHREE) && (k<=YMAXPLUSTHREE) ) {
pre_vol[ARRAYXY(j,k,XMAXPLUSFIVE)] = volume[ARRAYXY(j,k,XMAXPLUSFOUR)]
+ ( vol_flux_y[ARRAYXY(j ,k+1,XMAXPLUSFOUR)]
- vol_flux_y[ARRAYXY(j ,k ,XMAXPLUSFOUR)]
+ vol_flux_x[ARRAYXY(j+1,k ,XMAXPLUSFIVE)]
- vol_flux_x[ARRAYXY(j ,k ,XMAXPLUSFIVE)]
);
post_vol[ARRAYXY(j,k,XMAXPLUSFIVE)] = pre_vol[ARRAYXY(j,k,XMAXPLUSFIVE)]
- (vol_flux_y[ARRAYXY(j,k+1,XMAXPLUSFOUR)] - vol_flux_y[ARRAYXY(j,k,XMAXPLUSFOUR)] );
}
}
__kernel void advec_cell_ydir_section1_sweep2_kernel(
__global const double * restrict volume,
__global const double * restrict vol_flux_y,
__global double * restrict pre_vol,
__global double * restrict post_vol)
{
int k = get_global_id(1);
int j = get_global_id(0);
if ((j<=XMAXPLUSTHREE) && (k<=YMAXPLUSTHREE)) {
pre_vol[ARRAYXY(j,k,XMAXPLUSFIVE)] = volume[ARRAYXY(j,k,XMAXPLUSFOUR)]
+ vol_flux_y[ARRAYXY(j,k+1,XMAXPLUSFOUR)] - vol_flux_y[ARRAYXY(j,k,XMAXPLUSFOUR)];
post_vol[ARRAYXY(j,k,XMAXPLUSFIVE)] = volume[ARRAYXY(j,k,XMAXPLUSFOUR)];
}
}
__kernel void advec_cell_ydir_section2_kernel(
__global const double * restrict vertexdy,
__global const double * restrict density1,
__global const double * restrict energy1,
__global double * restrict mass_flux_y,
__global const double * restrict vol_flux_y,
__global const double * restrict pre_vol,
__global double * restrict ener_flux)
{
int upwind, donor, downwind, dif;
double sigma, sigmat, sigmav, sigmam, sigma3, sigma4;
double diffuw, diffdw, limiter;
__const double one_by_six=1.0/6.0;
int k = get_global_id(1);
int j = get_global_id(0);
if ((j>=2) && (j<=XMAXPLUSONE) && (k>=2) && (k<=YMAXPLUSTHREE) ) {
if (vol_flux_y[ARRAYXY(j,k,XMAXPLUSFOUR)] > 0.0) {
upwind = k-2;
donor = k-1;
downwind = k;
dif = donor;
} else {
upwind = min(k+1,YMAXPLUSTWO);
donor = k;
downwind = k-1;
dif = upwind;
}
sigmat = fabs( vol_flux_y[ARRAYXY(j,k,XMAXPLUSFOUR)] ) / pre_vol[ARRAYXY(j,donor,XMAXPLUSFIVE)];
sigma3 = (1.0 + sigmat) * ( vertexdy[k] / vertexdy[dif] );
sigma4 = 2.0 - sigmat;
sigma = sigmat;
sigmav = sigmat;
diffuw = density1[ARRAYXY(j,donor,XMAXPLUSFOUR)] - density1[ARRAYXY(j,upwind,XMAXPLUSFOUR)];
diffdw = density1[ARRAYXY(j,downwind,XMAXPLUSFOUR)] - density1[ARRAYXY(j,donor,XMAXPLUSFOUR)];
if (diffuw*diffdw > 0.0) {
limiter = (1.0-sigmav) * copysign(1.0,diffdw) * fmin( fabs(diffuw), fmin( fabs(diffdw), one_by_six * ( sigma3 * fabs(diffuw) + sigma4 * fabs(diffdw) ) ) );
} else {
limiter = 0.0;
}
mass_flux_y[ARRAYXY(j,k,XMAXPLUSFOUR)] = vol_flux_y[ARRAYXY(j,k,XMAXPLUSFOUR)] *
( density1[ARRAYXY(j,donor,XMAXPLUSFOUR)] +
limiter );
sigmam = fabs( mass_flux_y[ARRAYXY(j,k,XMAXPLUSFOUR)] ) / ( density1[ARRAYXY(j,donor,XMAXPLUSFOUR)] *
pre_vol[ARRAYXY(j,donor,XMAXPLUSFIVE)] );
diffuw = energy1[ARRAYXY(j,donor,XMAXPLUSFOUR)] - energy1[ARRAYXY(j,upwind,XMAXPLUSFOUR)];
diffdw = energy1[ARRAYXY(j,downwind,XMAXPLUSFOUR)] - energy1[ARRAYXY(j,donor,XMAXPLUSFOUR)];
if (diffuw*diffdw > 0.0) {
limiter = (1.0-sigmam) * copysign(1.0,diffdw) * fmin( fabs(diffuw), fmin( fabs(diffdw), one_by_six * (sigma3 * fabs(diffuw) + sigma4 * fabs(diffdw) ) ) );
} else {
limiter = 0.0;
}
ener_flux[ARRAYXY(j,k,XMAXPLUSFIVE)] = mass_flux_y[ARRAYXY(j,k,XMAXPLUSFOUR)] *
( energy1[ARRAYXY(j,donor,XMAXPLUSFOUR)] +
limiter );
}
}
__kernel void advec_cell_ydir_section3_kernel(
__global double * restrict density1,
__global double * restrict energy1,
__global const double * restrict mass_flux_y,
__global const double * restrict vol_flux_y,
__global const double * restrict pre_vol,
__global double * restrict pre_mass,
__global double * restrict post_mass,
__global double * restrict advec_vol,
__global double * restrict post_ener,
__global const double * restrict ener_flux)
{
int k = get_global_id(1);
int j = get_global_id(0);
if ((j>=2) && (j<=XMAXPLUSONE) && (k>=2) && (k<=YMAXPLUSONE)) {
pre_mass[ARRAYXY(j,k,XMAXPLUSFIVE)] = density1[ARRAYXY(j,k,XMAXPLUSFOUR)] * pre_vol[ARRAYXY(j,k,XMAXPLUSFIVE)];
post_mass[ARRAYXY(j,k,XMAXPLUSFIVE)] = pre_mass[ARRAYXY(j,k,XMAXPLUSFIVE)]
+ mass_flux_y[ARRAYXY(j, k , XMAXPLUSFOUR)]
- mass_flux_y[ARRAYXY(j, k+1, XMAXPLUSFOUR)];
post_ener[ARRAYXY(j,k,XMAXPLUSFIVE)] = ( energy1[ARRAYXY(j,k,XMAXPLUSFOUR)] *
pre_mass[ARRAYXY(j,k,XMAXPLUSFIVE)] +
ener_flux[ARRAYXY(j, k , XMAXPLUSFIVE)] -
ener_flux[ARRAYXY(j, k+1, XMAXPLUSFIVE)]
) / post_mass[ARRAYXY(j,k,XMAXPLUSFIVE)];
advec_vol[ARRAYXY(j,k,XMAXPLUSFIVE)] = pre_vol[ARRAYXY(j,k,XMAXPLUSFIVE)] +
vol_flux_y[ARRAYXY(j,k , XMAXPLUSFOUR)] -
vol_flux_y[ARRAYXY(j,k+1, XMAXPLUSFOUR)];
density1[ARRAYXY(j,k,XMAXPLUSFOUR)] = post_mass[ARRAYXY(j,k,XMAXPLUSFIVE)] / advec_vol[ARRAYXY(j,k,XMAXPLUSFIVE)];
energy1[ARRAYXY(j,k,XMAXPLUSFOUR)] = post_ener[ARRAYXY(j,k,XMAXPLUSFIVE)];
}
}