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delense_CPU.cpp
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Wed, Dec 4, 11:49

delense_CPU.cpp
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// This file is part of lenstoolHPC
// authors: gilles.fourestey@epfl.ch
#include "delense_CPU.hpp"
#if 1
void delense_barycenter(struct point* image_pos, int* locimagesfound, int* numimg, const runmode_param *runmode, const struct Potential_SOA *lens, const struct grid_param *frame, const int *nimages_strongLensing, const struct galaxy* sources, double* grid_gradient_x, double* grid_gradient_y)
{
#define INDEX2D_BAR(y, x) (MAXIMPERSOURCE*y + x)
//const unsigned int nimagestot = runmode->nimagestot;
const unsigned int nsets = runmode->nsets;
const unsigned int nbgridcells = runmode->nbgridcells;
int world_size = 1;
int world_rank = 0;
#ifdef __WITH_MPI
MPI_Comm_size(MPI_COMM_WORLD, &world_size);
MPI_Comm_rank(MPI_COMM_WORLD, &world_rank);
#endif
unsigned int verbose = (world_rank == 0);
//
const int grid_dim = runmode->nbgridcells;
const int grid_size = nbgridcells;
const int loc_grid_size = nbgridcells/world_size;
//
double y_len = fabs(frame->ymax - frame->ymin);
int y_len_loc = nbgridcells/world_size;
int y_pos_loc = (int) world_rank*y_len_loc;
int y_bound = y_len_loc;
//
if ((world_rank + 1) != world_size) y_bound++;
//
const double dx = (frame->xmax - frame->xmin)/(nbgridcells - 1);
const double dy = (frame->ymax - frame->ymin)/(nbgridcells - 1);
//
int images_total = 0;
int index = 0;
//
int lif[nsets][16];
memset(&lif,0, nsets*16*sizeof(int));
//
//locimagesfound[source_id] = 0;
//lif[source_id] = 0;
// number of images in the image plane for the specific image (1,3,5...)
//unsigned short int nimages = nimages_strongLensing[source_id];
//printf("@@ source_id = %d, nimages = %d\n", source_id, nimages_strongLensing[source_id]);
//____________________________ image (constrains) loop ________________________________
//
//struct point image_pos [MAXIMPERSOURCE];
//
//MPI_Barrier(MPI_COMM_WORLD);
//if (verbose) printf("source = %d, image = %d\n", source_id, image_id);
//if (verbose) fflush(stdout);
for( int source_id = 0; source_id < nsets; source_id ++)
{
int loc_images_found = 0;
// MPI_Barrier(MPI_COMM_WORLD);
//#endif
#pragma omp parallel
#pragma omp for reduction(+: images_total)
for (int y_id = 0; y_id < (y_bound - 1); ++y_id)
{
for (int x_id = 0; x_id < runmode->nbgridcells - 1 ; ++x_id)
{
images_total++;
//
double x_pos = frame->xmin + ( x_id)*dx;
double y_pos = frame->ymin + (y_pos_loc + y_id)*dy;
//
// Define the upper + lower triangle, both together = square = pixel
//
struct triplet Tsup, Tinf;
//
Tsup.a.x = x_pos;
Tsup.b.x = x_pos;
Tsup.c.x = x_pos + dx;
Tinf.a.x = x_pos + dx;
Tinf.b.x = x_pos + dx;
Tinf.c.x = x_pos;
//
Tsup.a.y = y_pos;
Tsup.b.y = y_pos + dy;
Tsup.c.y = y_pos;
Tinf.a.y = y_pos + dy;
Tinf.b.y = y_pos;
Tinf.c.y = y_pos + dy;
//
// Lens to Sourceplane conversion of triangles
//
// double time = -myseconds();
//
struct triplet Timage;
struct triplet Tsource;
//
mychi_transformtriangleImageToSourcePlane_SOA_grid_gradient_upper(&Tsup, sources[source_id].dr, &Tsource, grid_gradient_x, grid_gradient_y, y_id*grid_dim + x_id, grid_dim);
//
int thread_found_image = 0;
//
if (mychi_insideborder(&sources[source_id].center, &Tsource) == 1)
{
thread_found_image = 1;
Timage = Tsup;
}
else
{
mychi_transformtriangleImageToSourcePlane_SOA_grid_gradient_lower(&Tinf, sources[source_id].dr, &Tsource, grid_gradient_x, grid_gradient_y, y_id*grid_dim + x_id, grid_dim);
if (mychi_inside(&sources[source_id].center, &Tsource) == 1)
{
thread_found_image = 1;
Timage = Tinf;
}
}
#if 1
if (thread_found_image)
{
#pragma omp critical
{
// get the barycenter of the triangle
image_pos[INDEX2D_BAR(source_id, loc_images_found)] = mychi_barycenter(&Timage);
//locimagesfound[source_id]++;
loc_images_found++;
*numimg = *numimg + 1;
//locimagesfound[source_id]++;
lif[source_id][0]++;
//loc_images_found++;
//*numimg = *numimg + 1;
}
}
#endif
}
}
//printf("--> source %d found %d (%d) images, MAXIMPERSOURCE=%d\n\n", source_id, lif[source_id][0], nimages_strongLensing[source_id], MAXIMPERSOURCE);
index += nimages_strongLensing[source_id];
}
//#pragma omp parallel for
for (int ii = 0; ii < nsets; ++ii)
locimagesfound[ii] = lif[ii][0];
}
#endif
void delense(struct point* image_pos, int* locimagesfound, int* numimg, const runmode_param *runmode, const struct Potential_SOA *lens, const struct grid_param *frame, const int *nimages_strongLensing, const struct galaxy* sources, double* grid_gradient_x, double* grid_gradient_y)
{
const unsigned int nsets = runmode->nsets;
const unsigned int nimagestot = runmode->nimagestot;
#define INDEX2D(y, x) (nimagestot*y + x)
#define INDEX3D(y, x, z) (nimagestot*MAXIMPERSOURCE*y + MAXIMPERSOURCE*x + z)
//const unsigned int nsets = runmode->nsets;
//const unsigned int nimagestot = runmode->nimagestot;
const unsigned int nbgridcells = runmode->nbgridcells;
//printf("nsets = %d, nimagestot = %d\n", nsets, nimagestot);
int world_size = 1;
int world_rank = 0;
#ifdef __WITH_MPI
MPI_Comm_size(MPI_COMM_WORLD, &world_size);
MPI_Comm_rank(MPI_COMM_WORLD, &world_rank);
MPI_Barrier(MPI_COMM_WORLD);
#endif
unsigned int verbose = (world_rank == 0);
//
const int grid_dim = runmode->nbgridcells;
const int grid_size = nbgridcells;
const int loc_grid_size = nbgridcells/world_size;
//
double y_len = fabs(frame->ymax - frame->ymin);
int y_len_loc = nbgridcells/world_size;
int y_pos_loc = (int) world_rank*y_len_loc;
int y_bound = y_len_loc;
//
if ((world_rank + 1) != world_size) y_bound++;
//
const double dx = (frame->xmax - frame->xmin)/(nbgridcells - 1);
const double dy = (frame->ymax - frame->ymin)/(nbgridcells - 1);
//
int images_total = 0;
int index = 0;
//
for( int source_id = 0; source_id < nsets; source_id ++)
{
// number of images in the image plane for the specific image (1,3,5...)
const unsigned short int nimages = nimages_strongLensing[source_id];
//____________________________ image (constrains) loop ________________________________
for(unsigned short int image_id = 0; image_id < nimages; image_id++)
{
//
//struct point image_pos [MAXIMPERSOURCE];
//
int loc_images_found = 0;
//
#pragma omp parallel
#pragma omp for reduction(+: images_total)
for (int y_id = 0; y_id < (y_bound - 1); ++y_id)
{
for (int x_id = 0; x_id < runmode->nbgridcells - 1 ; ++x_id)
{
//int yy_pos = MIN(y_pos_loc + y_id, runmode->nbgridcells - 1);
images_total++;
//
double x_pos = frame->xmin + ( x_id)*dx;
double y_pos = frame->ymin + (y_pos_loc + y_id)*dy;
//
// Define the upper + lower triangle, both together = square = pixel
//
struct triplet Tsup, Tinf;
//
Tsup.a.x = x_pos;
Tsup.b.x = x_pos;
Tsup.c.x = x_pos + dx;
Tinf.a.x = x_pos + dx;
Tinf.b.x = x_pos + dx;
Tinf.c.x = x_pos;
//
Tsup.a.y = y_pos;
Tsup.b.y = y_pos + dy;
Tsup.c.y = y_pos;
Tinf.a.y = y_pos + dy;
//
Tsup.c.y = y_pos;
Tinf.a.y = y_pos + dy;
Tinf.b.y = y_pos;
Tinf.c.y = y_pos + dy;
//
// Lens to Sourceplane conversion of triangles
//
struct triplet Timage;
struct triplet Tsource;
//
double dr = sources[INDEX2D(source_id, image_id)].dr;
mychi_transformtriangleImageToSourcePlane_SOA_grid_gradient_upper(&Tsup, dr, &Tsource, grid_gradient_x, grid_gradient_y, y_id*grid_dim + x_id, grid_dim);
//
int thread_found_image = 0;
//
if (mychi_insideborder(&sources[INDEX2D(source_id, image_id)].center, &Tsource) == 1)
{
thread_found_image = 1;
Timage = Tsup;
}
else
{
mychi_transformtriangleImageToSourcePlane_SOA_grid_gradient_lower(&Tinf, sources[INDEX2D(source_id, image_id)].dr, &Tsource, grid_gradient_x, grid_gradient_y, y_id*grid_dim + x_id, grid_dim);
if (mychi_inside(&sources[INDEX2D(source_id, image_id)].center, &Tsource) == 1)
{
thread_found_image = 1;
Timage = Tinf;
}
}
#if 1
if (thread_found_image)
{
#pragma omp critical
{
// get the barycenter of the triangle
image_pos[INDEX3D(source_id, image_id, loc_images_found)] = mychi_barycenter(&Timage);
locimagesfound[INDEX2D(source_id, image_id)]++;
loc_images_found++;
*numimg = *numimg + 1;
}
}
#endif
}
}
//#if 1
}
index += nimages_strongLensing[source_id];
}
}

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