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grid_gradient2_CPU.cpp
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Tue, Dec 3, 21:55

grid_gradient2_CPU.cpp
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/**
Lenstool-HPC: HPC based massmodeling software and Lens-map generation
Copyright (C) 2017 Christoph Schaefer, EPFL (christophernstrerne.schaefer@epfl.ch), Gilles Fourestey (gilles.fourestey@epfl.ch)
This program 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.
This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
@brief: Function for second order derivative computation over a grid
*/
#include "grid_gradient2_CPU.hpp"
//
#ifdef __WITH_MPI
#include<mpi.h>
#endif
//
//
void gradient2_grid_CPU(matrix *grid_grad2, const struct grid_param *frame, const struct Potential_SOA *lens, int nhalos, int nbgridcells, int istart, int jstart)
{
type_t dx = (frame->xmax - frame->xmin)/(nbgridcells - 1);
type_t dy = (frame->ymax - frame->ymin)/(nbgridcells - 1);
//
gradient2_grid_general_CPU(grid_grad2, frame, lens, nhalos, dx, dy, nbgridcells, nbgridcells, istart, jstart);
}
void gradient2_grid_CPU(matrix *grid_grad2, const struct grid_param *frame, const struct Potential_SOA *lens, int nhalos, int nbgridcells_x, int nbgridcells_y, int istart, int jstart)
{
type_t dx = (frame->xmax - frame->xmin)/(nbgridcells_x - 1);
type_t dy = (frame->ymax - frame->ymin)/(nbgridcells_y - 1);
//
printf("istart = %d, jstart = %d, nbgridcells_x = %d, ngridcells_y = %d\n", istart, jstart, nbgridcells_x, nbgridcells_y);
gradient2_grid_general_CPU(grid_grad2, frame, lens, nhalos, dx, dy, nbgridcells_x, nbgridcells_y, istart, jstart);
}
//
//
//
void gradient2_grid_CPU(matrix *grid_grad2, const struct grid_param *frame, const struct Potential_SOA *lens, int nhalos, double dx, double dy, int nbgridcells_x, int nbgridcells_y, int istart, int jstart)
{
gradient2_grid_general_CPU(grid_grad2, frame, lens, nhalos, dx, dy, nbgridcells_x, nbgridcells_y, istart, jstart);
}
//
//
//
void gradient2_grid_general_CPU(matrix *grid_grad2, const struct grid_param *frame, const struct Potential_SOA *lens, int Nlens, type_t dx, type_t dy, int nbgridcells_x, int nbgridcells_y, int istart, int jstart)
{
int bid = 0; // index of the block (and of the set of images)
int tid = 0; // index of the thread within the block
//
type_t /*dx, dy,*/ x_pos, y_pos; //pixelsize
int grid_dim;
point image_point;
matrix Grad;
//
grid_dim = nbgridcells_x*nbgridcells_y;
//
#pragma omp parallel
#pragma omp for private(Grad, image_point)
for (int jj = 0; jj < nbgridcells_y; ++jj)
for (int ii = 0; ii < nbgridcells_x; ++ii)
{
int index = jj*nbgridcells_x + ii;
image_point.x = frame->xmin + (ii + istart)*dx;
image_point.y = frame->ymin + (jj + jstart)*dy;
//
Grad = module_potentialDerivatives_totalGradient2_SOA(&image_point, lens, Nlens);
//
grid_grad2[index] = Grad;
//
}
}

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