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Tue, Sep 3, 09:26

main.cpp
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/**
* @file main.cpp
* @Author Christoph Schaaefer, EPFL (christophernstrerne.schaefer@epfl.ch)
* @date October 2016
* @brief Benchmark for gradhalo function
*/
#include <iostream>
#include <iomanip>
#include <string.h>
#include <math.h>
#include <sys/time.h>
#include <fstream>
#include <sys/stat.h>
//
#include <mm_malloc.h>
//
#include "structure.h"
#include "timer.h"
#include "gradient.hpp"
#include "chi.hpp"
#include "module_cosmodistances.h"
#include "module_readParameters.hpp"
#include "structure.h"
int module_readCheckInput_readInput(int argc, char *argv[])
{
/// check if there is a correct number of arguments, and store the name of the input file in infile
char* infile;
struct stat file_stat;
// If we do not have 3 arguments, stop
if ( argc != 3 )
{
fprintf(stderr, "\nUnexpected number of arguments\n");
fprintf(stderr, "\nUSAGE:\n");
fprintf(stderr, "lenstool input_file output_directorypath [-n]\n\n");
exit(-1);
}
else if ( argc == 3 )
infile=argv[1];
std::ifstream ifile(infile,std::ifstream::in); // Open the file
// check whether the output directory already exists
if (stat(argv[2],&file_stat) < 0){
mkdir(argv[2], S_IRUSR | S_IWUSR | S_IXUSR | S_IRGRP | S_IWGRP | S_IXGRP | S_IROTH );
}
else {
printf("Error : Directory %s already exists. Specify a non existing directory.\n",argv[2]);
exit(-1);
}
// check whether the input file exists. If it could not be opened (ifile = 0), it does not exist
if(ifile){
ifile.close();
}
else{
printf("The file %s does not exist, please specify a valid file name\n",infile);
exit(-1);
}
return 0;
}
int main(int argc, char *argv[])
{
// Setting Up the problem
//===========================================================================================================
// This module function reads the terminal input when calling LENSTOOL and checks that it is correct
// Otherwise it exits LENSTOOL
module_readCheckInput_readInput(argc, argv);
// This module function reads the cosmology parameters from the parameter file
// Input: struct cosmologicalparameters cosmology, parameter file
// Output: Initialized cosmology struct
cosmo_param cosmology; // Cosmology struct to store the cosmology data from the file
std::string inputFile = argv[1]; // Input file
module_readParameters_readCosmology(inputFile, cosmology);
// This module function reads the runmode paragraph and the number of sources, arclets, etc. in the parameter file.
// The runmode_param stores the information of what exactly the user wants to do with lenstool.
struct runmode_param runmode;
module_readParameters_readRunmode(inputFile, &runmode);
module_readParameters_debug_cosmology(runmode.debug, cosmology);
module_readParameters_debug_runmode(runmode.debug, runmode);
//=== Declaring variables
struct grid_param frame;
struct galaxy images[runmode.nimagestot];
struct galaxy sources[runmode.nsets];
struct Potential lenses[runmode.nhalos+runmode.npotfile-1];
struct cline_param cline;
struct potfile_param potfile;
struct Potential potfilepotentials[runmode.npotfile];
struct potentialoptimization host_potentialoptimization[runmode.nhalos];
int nImagesSet[runmode.nsets]; // Contains the number of images in each set of images
// This module function reads in the potential form and its parameters (e.g. NFW)
// Input: input file
// Output: Potentials and its parameters
module_readParameters_Potential(inputFile, lenses, runmode.nhalos);
module_readParameters_debug_potential(runmode.debug, lenses, runmode.nhalos);
// This module function reads in the potfiles parameters
// Input: input file
// Output: Potentials from potfiles and its parameters
if (runmode.potfile == 1 ){
module_readParameters_readpotfiles_param(inputFile, &potfile);
module_readParameters_debug_potfileparam(runmode.debug, &potfile);
module_readParameters_readpotfiles(&runmode,&potfile,lenses);
module_readParameters_debug_potential(runmode.debug, lenses, runmode.nhalos+runmode.npotfile);
}
// This module function reads in the grid form and its parameters
// Input: input file
// Output: grid and its parameters
module_readParameters_Grid(inputFile, &frame);
if (runmode.image == 1 or runmode.inverse == 1 or runmode.time > 0){
// This module function reads in the strong lensing images
module_readParameters_readImages(&runmode, images, nImagesSet);
//runmode.nsets = runmode.nimagestot;
for(int i = 0; i < runmode.nimagestot; ++i){
images[i].dls = module_cosmodistances_objectObject(lenses[0].z, images[i].redshift, cosmology);
images[i].dos = module_cosmodistances_observerObject(images[i].redshift, cosmology);
images[i].dr = module_cosmodistances_lensSourceToObserverSource(lenses[0].z, images[i].redshift, cosmology);
}
module_readParameters_debug_image(runmode.debug, images, nImagesSet,runmode.nsets);
}
if (runmode.inverse == 1){
// This module function reads in the potential optimisation limits
module_readParameters_limit(inputFile,host_potentialoptimization,runmode.nhalos);
module_readParameters_debug_limit(runmode.debug, host_potentialoptimization[0]);
}
if (runmode.source == 1){
//Initialisation to default values.(Setting sources to z = 1.5 default value)
for(int i = 0; i < runmode.nsets; ++i){
sources[i].redshift = 1.5;
}
// This module function reads in the strong lensing sources
module_readParameters_readSources(&runmode, sources);
//Calculating cosmoratios
for(int i = 0; i < runmode.nsets; ++i){
sources[i].dls = module_cosmodistances_objectObject(lenses[0].z, sources[i].redshift, cosmology);
sources[i].dos = module_cosmodistances_observerObject(sources[i].redshift, cosmology);
sources[i].dr = module_cosmodistances_lensSourceToObserverSource(lenses[0].z, sources[i].redshift, cosmology);
}
module_readParameters_debug_source(runmode.debug, sources, runmode.nsets);
}
// Lenstool-GPU Bruteforce
//===========================================================================================================
double chi2(0);
int error(0);
chi_bruteforce(&chi2,&error,&runmode,lenses,&frame,nImagesSet,images);
std::cout << " Chi Brute Force Benchmark " << std::endl;
std::cout << " Chi : " << chi2 << std::endl;
}

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