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invert.c
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invert.c
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/* $Id$ */
/*******************************************************************************
*
* Hybrid-Monte-Carlo for twisted mass QCD
*
* Author: Carsten Urbach
* urbach@physik.fu-berlin.de
*
*******************************************************************************/
#define MAIN_PROGRAM
#include"lime.h"
#ifdef HAVE_CONFIG_H
# include<config.h>
#endif
#include <stdlib.h>
#include <stdio.h>
#include <math.h>
#include <time.h>
#include <string.h>
#include <signal.h>
#ifdef MPI
#include <mpi.h>
#endif
#include "global.h"
#include "getopt.h"
#include "linalg_eo.h"
#include "geometry_eo.h"
#include "start.h"
/*#include "eigenvalues.h"*/
#include "observables.h"
#ifdef MPI
#include "xchange.h"
#endif
#include "io.h"
#include "io_utils.h"
#include "propagator_io.h"
#include "gauge_io.h"
#include "read_input.h"
#include "mpi_init.h"
#include "sighandler.h"
#include "boundary.h"
#include "solver/solver.h"
#include "init_gauge_field.h"
#include "init_geometry_indices.h"
#include "init_spinor_field.h"
#include "init_moment_field.h"
#include "init_dirac_halfspinor.h"
#include "xchange_halffield.h"
#include "update_backward_gauge.h"
#include "stout_smear.h"
#include "invert_eo.h"
#include "D_psi.h"
#include "linalg/convert_eo_to_lexic.h"
void usage(){
fprintf(stdout, "Inversion for EO preconditioned Wilson twisted mass QCD\n");
fprintf(stdout, "Version %s \n\n", PACKAGE_VERSION);
fprintf(stdout, "Please send bug reports to %s\n", PACKAGE_BUGREPORT);
fprintf(stdout, "Usage: invert [options]\n");
fprintf(stdout, "Options: [-f input-filename]\n");
fprintf(stdout, " [-o output-filename]\n");
fprintf(stdout, " [-h|-? this help]\n");
exit(0);
}
extern int nstore;
int check_geometry();
int main(int argc,char *argv[]) {
FILE *parameterfile=NULL, *ifs=NULL;
int c, iter, j, ix=0, is=0, ic=0, err=0;
char * filename = NULL;
char datafilename[50];
char parameterfilename[50];
char conf_filename[50];
char * input_filename = NULL;
double plaquette_energy;
#ifdef _GAUGE_COPY
int kb=0;
#endif
double nrm1, nrm2;
#ifdef MPI
double atime=0., etime=0.;
#endif
#ifdef _KOJAK_INST
#pragma pomp inst init
#pragma pomp inst begin(main)
#endif
DUM_DERI = 6;
/* DUM_DERI + 2 is enough (not 7) */
DUM_SOLVER = DUM_DERI+2;
DUM_MATRIX = DUM_SOLVER+6;
/* DUM_MATRIX + 2 is enough (not 6) */
NO_OF_SPINORFIELDS = DUM_MATRIX+2;
verbose = 0;
g_use_clover_flag = 0;
g_nr_of_psf = 1;
#ifdef MPI
MPI_Init(&argc, &argv);
#endif
while ((c = getopt(argc, argv, "h?f:o:")) != -1) {
switch (c) {
case 'f':
input_filename = calloc(200, sizeof(char));
strcpy(input_filename,optarg);
break;
case 'o':
filename = calloc(200, sizeof(char));
strcpy(filename,optarg);
break;
case 'h':
case '?':
default:
usage();
break;
}
}
if(input_filename == NULL){
input_filename = "hmc.input";
}
if(filename == NULL){
filename = "output";
}
/* Read the input file */
read_input(input_filename);
/* this DBW2 stuff is not needed for the inversion ! */
g_rgi_C1 = 0;
if(Nskip == 0){
Nskip = 1;
}
mpi_init(argc, argv);
g_dbw2rand = 0;
#ifndef MPI
g_dbw2rand = 0;
#endif
#ifdef _GAUGE_COPY
j = init_gauge_field(VOLUMEPLUSRAND, 1);
#else
j = init_gauge_field(VOLUMEPLUSRAND, 0);
#endif
if ( j!= 0) {
fprintf(stderr, "Not enough memory for gauge_fields! Aborting...\n");
exit(-1);
}
j = init_geometry_indices(VOLUMEPLUSRAND);
if ( j!= 0) {
fprintf(stderr, "Not enough memory for geometry indices! Aborting...\n");
exit(-1);
}
if(even_odd_flag) {
j = init_spinor_field(VOLUMEPLUSRAND/2, NO_OF_SPINORFIELDS);
}
else {
j = init_spinor_field(VOLUMEPLUSRAND, NO_OF_SPINORFIELDS);
}
if ( j!= 0) {
fprintf(stderr, "Not enough memory for spinor fields! Aborting...\n");
exit(-1);
}
g_mu = g_mu1;
if(g_proc_id == 0){
/*construct the filenames for the observables and the parameters*/
strcpy(datafilename,filename); strcat(datafilename,".data");
strcpy(parameterfilename,filename); strcat(parameterfilename,".para");
parameterfile=fopen(parameterfilename, "w");
write_first_messages(parameterfile, 0, 1);
}
/* define the geometry */
geometry();
/* define the boundary conditions for the fermion fields */
boundary();
#ifdef _USE_HALFSPINOR
j = init_dirac_halfspinor();
if ( j!= 0) {
fprintf(stderr, "Not enough memory for halffield! Aborting...\n");
exit(-1);
}
if(g_sloppy_precision_flag == 1) {
j = init_dirac_halfspinor32();
if ( j!= 0) {
fprintf(stderr, "Not enough memory for 32-Bit halffield! Aborting...\n");
exit(-1);
}
}
# if (defined _PERSISTENT)
init_xchange_halffield();
# endif
#endif
for(j=0;j<Nmeas; j++) {
sprintf(conf_filename,"%s.%.4d", gauge_input_filename, nstore);
if (g_proc_id == 0){
printf("Reading Gauge field from file %s\n", conf_filename); fflush(stdout);
}
read_lime_gauge_field(conf_filename);
if (g_proc_id == 0){
printf("done!\n"); fflush(stdout);
}
#ifdef MPI
xchange_gauge();
#endif
#ifdef _GAUGE_COPY
update_backward_gauge();
#endif
/* Compute minimal eigenvalues, if wanted */
if(compute_evs != 0) {
eigenvalues(&no_eigenvalues, 1000, eigenvalue_precision, 0, compute_evs, nstore, even_odd_flag);
}
/*compute the energy of the gauge field*/
plaquette_energy = measure_gauge_action();
if(g_proc_id == 0) {
printf("The plaquette value is %e\n", plaquette_energy/(6.*VOLUME*g_nproc)); fflush(stdout);
}
if(use_stout_flag == 1) {
if( stout_smear_gauge_field(stout_rho , stout_no_iter) != 0 ) exit(1) ;
plaquette_energy = measure_gauge_action();
if(g_proc_id == 0) {
printf("The plaquette value after stouting is %e\n", plaquette_energy/(6.*VOLUME*g_nproc)); fflush(stdout);
}
}
for(ix = index_start; ix < index_end; ix++) {
is = (ix / 3);
ic = (ix % 3);
if(read_source_flag == 0) {
if(source_location == 0)
source_spinor_field(g_spinor_field[0], g_spinor_field[1], is, ic);
else
source_spinor_field_point_from_file(g_spinor_field[0], g_spinor_field[1], is, ic, source_location);
}
else {
if(source_splitted) {
sprintf(conf_filename,"%s.%.2d", source_input_filename, ix);
if(g_proc_id == 0) {
printf("Reading source from %s\n", conf_filename);
}
if(read_lime_spinor(g_spinor_field[0], g_spinor_field[1], conf_filename, 0) != 0) {
if(g_proc_id == 0) {
printf("Error reading source! Aborting...\n");
}
#ifdef MPI
MPI_Abort(MPI_COMM_WORLD, 1);
MPI_Finalize();
#endif
exit(-1);
};
}
else {
sprintf(conf_filename,"%s", source_input_filename);
if(g_proc_id == 0) {
printf("Reading source from %s\n", conf_filename);
}
if(read_lime_spinor(g_spinor_field[0], g_spinor_field[1], conf_filename, ix) != 0) {
if(g_proc_id == 0) {
printf("Error reading source! Aborting...\n");
}
#ifdef MPI
MPI_Abort(MPI_COMM_WORLD, 1);
MPI_Finalize();
#endif
exit(-1);
};
}
}
if(g_proc_id == 0) {printf("mu = %e\n", g_mu);}
if(propagator_splitted) {
sprintf(conf_filename,"%s.%.2d.inverted", source_input_filename, ix);
}
else {
sprintf(conf_filename,"%s.inverted", source_input_filename);
}
/* If the solver is _not_ CG we might read in */
/* here some better guess */
/* This also works for re-iteration */
if(solver_flag != CG && solver_flag != PCG) {
ifs = fopen(conf_filename, "r");
if(ifs != NULL) {
if(g_proc_id == g_stdio_proc){
printf("# Trying to read guess from file %s\n", conf_filename);
fflush(stdout);
}
fclose(ifs);
err = 0;
iter = get_propagator_type(conf_filename);
if(iter > -1 ) {
if(iter == 1) {
if(propagator_splitted){
err = read_lime_spinor(g_spinor_field[2], g_spinor_field[3], conf_filename, 0);
}
else {
err = read_lime_spinor(g_spinor_field[2], g_spinor_field[3], conf_filename, ix);
}
}
else if(iter == 0 ) {
if(propagator_splitted){
err = read_lime_spinor(g_spinor_field[2], g_spinor_field[3], conf_filename, 1);
}
else {
err = read_lime_spinor(g_spinor_field[2], g_spinor_field[3], conf_filename, 2*ix);
}
}
mul_r(g_spinor_field[3], 1./(2*g_kappa), g_spinor_field[3], VOLUME/2);
mul_r(g_spinor_field[2], 1./(2*g_kappa), g_spinor_field[2], VOLUME/2);
}
if(err != 0) {
zero_spinor_field(g_spinor_field[3],VOLUME/2);
}
}
else {
zero_spinor_field(g_spinor_field[3],VOLUME/2);
}
}
else {
zero_spinor_field(g_spinor_field[3],VOLUME/2);
}
#ifdef MPI
atime = MPI_Wtime();
#endif
iter = invert_eo(g_spinor_field[2], g_spinor_field[3], g_spinor_field[0], g_spinor_field[1],
solver_precision, max_solver_iterations, solver_flag,g_relative_precision_flag,
sub_evs_cg_flag, even_odd_flag);
#ifdef MPI
etime = MPI_Wtime();
#endif
/* To write in standard format */
/* we have to mult. by 2*kappa */
mul_r(g_spinor_field[2], (2*g_kappa), g_spinor_field[2], VOLUME/2);
mul_r(g_spinor_field[3], (2*g_kappa), g_spinor_field[3], VOLUME/2);
if(propagator_splitted) {
write_propagator_type(write_prop_format_flag, conf_filename);
write_xlf_info(plaquette_energy/(6.*VOLUME*g_nproc), nstore, conf_filename, 1);
/* write the source depending on format */
if(write_prop_format_flag == 1) {
write_source(g_spinor_field[0], g_spinor_field[1], conf_filename, 1, 32);
}
write_propagator(g_spinor_field[2], g_spinor_field[3], conf_filename, 1, prop_precision_flag);
/* write_spinorfield_eo_time_p(g_spinor_field[2], g_spinor_field[3], conf_filename, 0); */
}
else {
/* sprintf(conf_filename,"%s%.2d.%.4d", "prop.mass", mass_number, nstore); */
if(ix == index_start) {
write_propagator_type(write_prop_format_flag, conf_filename);
}
write_xlf_info(plaquette_energy/(6.*VOLUME*g_nproc), nstore, conf_filename, 1);
/* write the source depending on format */
if(write_prop_format_flag == 1) {
write_source(g_spinor_field[0], g_spinor_field[1], conf_filename, 1, 32);
}
write_propagator(g_spinor_field[2], g_spinor_field[3], conf_filename, 1, prop_precision_flag);
}
/* Check the result */
M_full(g_spinor_field[4], g_spinor_field[5], g_spinor_field[2], g_spinor_field[3]);
mul_r(g_spinor_field[4], 1./(2*g_kappa), g_spinor_field[4], VOLUME/2);
mul_r(g_spinor_field[5], 1./(2*g_kappa), g_spinor_field[5], VOLUME/2);
diff(g_spinor_field[4], g_spinor_field[4], g_spinor_field[0], VOLUME/2);
diff(g_spinor_field[5], g_spinor_field[5], g_spinor_field[1], VOLUME/2);
nrm1 = square_norm(g_spinor_field[4], VOLUME/2);
nrm2 = square_norm(g_spinor_field[5], VOLUME/2);
if(g_proc_id == 0) {
printf("Inversion for source %d done in %d iterations, residue = %e!\n", ix, iter, nrm1+nrm2);
#ifdef MPI
printf("Inversion done in %e sec. (MPI_Wtime)\n", etime-atime);
#endif
write_inverter_info(nrm1+nrm2, iter, 0, 1, conf_filename);
}
}
nstore+=Nskip;
}
#ifdef MPI
MPI_Finalize();
#endif
free_gauge_field();
free_geometry_indices();
free_spinor_field();
free_moment_field();
return(0);
#ifdef _KOJAK_INST
#pragma pomp inst end(main)
#endif
}