test_Spectrum_Overlap_2ptFunction_5dSolver.cpp

Go to the documentation of this file.

#include "parameterManager_YAML.h"
#include "parameters_factory.h"

#include "bridgeIO.h"
using Bridge::vout;

#include "gaugeConfig.h"
#include "staples.h"

#include "randomNumbers_Mseries.h"

#include "fopr_Wilson.h"
#include "fopr_Overlap.h"
#include "fopr_Overlap_5d.h"
#include "fprop_Overlap_5d.h"

#include "eigensolver_IRLanczos.h"

#include "gammaMatrixSet.h"
#include "gaugeFixing.h"
#include "solver.h"
#include "sortField.h"
#include "source.h"

#include "corr2pt_4spinor.h"

#ifdef USE_TEST
#include "test.h"
#endif

#ifdef USE_TESTMANAGER_AUTOREGISTER
#include "testManager.h"
#endif

//====================================================================

namespace Test_Spectrum_Overlap {
  //- test-private parameters
  namespace {
    const std::string filename_input  = "test_Spectrum_Overlap_Hadron2ptFunction_5dSolver.yaml";
    const std::string filename_output = "stdout";

    class Parameters_Test_Spectrum_Overlap : public Parameters {
     public:
      Parameters_Test_Spectrum_Overlap()
      {
        Register_string("gauge_config_type_input", "NULL");
        Register_string("config_filename_input", "NULL");

        Register_string("verbose_level", "NULL");

        Register_double("expected_result", 0.0);
      }
    };
  }

  //- prototype declaration
  int hadron_2ptFunction_5d_solver(void);
  void calc_lowmodes(Parameters *params_irlanczos,
                     int& Nsbt,
                     valarray<double>& TDa,
                     valarray<Field>& vk,
                     Fopr *fopr);

#ifdef USE_TESTMANAGER_AUTOREGISTER
  namespace {
    static const bool is_registered = TestManager::RegisterTest(
      "Spectrum.Overlap.Hadron2ptFunction_5dSolver",
      hadron_2ptFunction_5d_solver
      );
  }
#endif

  //====================================================================
  int hadron_2ptFunction_5d_solver(void)
  {
    // ####  parameter setup  ####
    int Nc   = CommonParameters::Nc();
    int Nd   = CommonParameters::Nd();
    int Nvol = CommonParameters::Nvol();
    int Ndim = CommonParameters::Ndim();
    int NinF = 2 * Nc * Nd;

    Parameters *params_test      = new Parameters_Test_Spectrum_Overlap;
    Parameters *params_gfix      = ParametersFactory::New("GaugeFixing");
    Parameters *params_wilson    = ParametersFactory::New("Fopr.Wilson");
    Parameters *params_overlap   = ParametersFactory::New("Fopr.Overlap");
    Parameters *params_irlanczos = ParametersFactory::New("Eigensolver.IRLanczos");
    Parameters *params_solver    = ParametersFactory::New("Solver");
    Parameters *params_source    = ParametersFactory::New("Source");

    Parameters *params_all = new Parameters;

    params_all->Register_Parameters("Test_Spectrum_Overlap", params_test);
    params_all->Register_Parameters("GaugeFixing", params_gfix);
    params_all->Register_Parameters("Fopr_Wilson", params_wilson);
    params_all->Register_Parameters("Fopr_Overlap_5d_solver", params_overlap);
    params_all->Register_Parameters("Eigensolver", params_irlanczos);
    params_all->Register_Parameters("Solver", params_solver);
    params_all->Register_Parameters("Source", params_source);

    ParameterManager_YAML params_manager;
    params_manager.read_params(filename_input, params_all);

    const string str_gconf_read = params_test->get_string("gauge_config_type_input");
    const string readfile       = params_test->get_string("config_filename_input");
    const string str_vlevel     = params_test->get_string("verbose_level");
#ifdef USE_TEST
    const double expected_result = params_test->get_double("expected_result");
#endif

    const string str_gfix_type   = params_gfix->get_string("gauge_fixing_type");
    const string str_gmset_type  = params_wilson->get_string("gamma_matrix_type");
    const string str_source_type = params_source->get_string("source_type");

    Bridge::VerboseLevel vl = vout.set_verbose_level(str_vlevel);

    //- print input parameters
    vout.general(vl, "  gconf_read  = %s\n", str_gconf_read.c_str());
    vout.general(vl, "  readfile    = %s\n", readfile.c_str());
    vout.general(vl, "  vlevel      = %s\n", str_vlevel.c_str());
    vout.general(vl, "  gfix_type   = %s\n", str_gfix_type.c_str());
    vout.general(vl, "  gmset_type  = %s\n", str_gmset_type.c_str());
    vout.general(vl, "  source_type = %s\n", str_source_type.c_str());

    //- input parameter check
    int err = 0;
    err += ParameterCheck::non_NULL(str_gconf_read);
    err += ParameterCheck::non_NULL(readfile);

    if (err) {
      vout.crucial(vl, "Test_Spectrum_Overlap: Input parameters have not been set.\n");
      abort();
    }


    // ####  Set up a gauge configuration  ####
    Field_G     *U          = new Field_G(Nvol, Ndim);
    GaugeConfig *gconf_read = new GaugeConfig(str_gconf_read);
    gconf_read->read_file((Field *)U, readfile);
    // gconf_read->set_cold((Field*)U);


    // ####  Gauge fixing  ####
    Staples *staple = new Staples;
    Field_G *Ufix   = new Field_G(Nvol, Ndim);

    int           ndelay = 1000;
    RandomNumbers *rand  = new RandomNumbers_Mseries(ndelay);

    GaugeFixing *gfix = GaugeFixing::New(str_gfix_type, rand);
    gfix->set_parameters(*params_gfix);

    double plaq = staple->plaquette(*U);
    vout.general(vl, "plaq(original) = %18.14f\n", plaq);

    gfix->fix(*Ufix, *U);

    double plaq2 = staple->plaquette(*Ufix);
    vout.general(vl, "plaq(fixed)    = %18.14f\n", plaq2);
    vout.general(vl, "plaq(diff)     = %18.10e\n", plaq - plaq2);


    // ####  object setup  ####
    GammaMatrixSet *gmset = GammaMatrixSet::New(str_gmset_type);

    Fopr_Wilson *fopr_w = new Fopr_Wilson(str_gmset_type);
    fopr_w->set_parameters(*params_wilson);
    fopr_w->set_config(Ufix);

    int              Nsbt = 0;
    valarray<double> TDa;
    valarray<Field>  vk;

    // with low-mode subtraction
    calc_lowmodes(params_irlanczos, Nsbt, TDa, vk, fopr_w);

    Fopr_Overlap *fopr_overlap = new Fopr_Overlap(fopr_w);
    fopr_overlap->set_parameters(*params_overlap);
    fopr_overlap->set_config(Ufix);
    fopr_overlap->set_lowmodes(Nsbt, &TDa, &vk);

    Fprop_Overlap_5d *fprop_5d = new Fprop_Overlap_5d(fopr_overlap, Ufix);
    fprop_5d->set_parameters(*params_overlap, *params_solver);
    fprop_5d->set_lowmodes(Nsbt, &TDa, &vk);

    Source *source = Source::New(str_source_type);
    source->set_parameters(*params_source);


    // ####  Execution main part  ####
    valarray<Field_F> sq(Nc * Nd);
    Field_F           b;

    vout.general(vl, "\n");
    vout.general(vl, "Solving quark propagator:\n");
    vout.general(vl, "  color spin   Nconv      diff           diff2\n");

    // { int ispin = 0;
    //   { int icolor = 0;
    for (int ispin = 0; ispin < Nd; ++ispin) {
      for (int icolor = 0; icolor < Nc; ++icolor) {
        int idx = icolor + Nc * ispin;
        source->set(b, idx);

        fprop_5d->calc_fprop(sq[idx], (Field)b);
      }
    }

    //- meson correlators
    std::ofstream log_file;
    if (filename_output != "stdout") {
      log_file.open(filename_output.c_str());
      vout.init(log_file);
    }

    vout.general(vl, "\n");
    vout.general(vl, "2-point correlator:\n");
    Corr2pt_4spinor corr(gmset);
    //corr.meson_all(sq,sq);
    double result = corr.meson_all(sq, sq);

    if (filename_output != "stdout") {
      log_file.close();
      vout.init(std::cout);
    }


    // #####  tidy up  #####
    delete gconf_read;
    delete U;
    delete Ufix;

    delete rand;
    delete staple;

    delete fopr_w;
    delete fopr_overlap;
    delete fprop_5d;

    delete gfix;
    delete gmset;
    delete source;

    delete params_test;
    delete params_gfix;
    delete params_wilson;
    delete params_overlap;
    delete params_irlanczos;
    delete params_solver;
    delete params_source;
    delete params_all;


#ifdef USE_TEST
    return Test::verify(expected_result, result);

#else
    return EXIT_SUCCESS;
#endif
  }


  //====================================================================
  void calc_lowmodes(Parameters *params_irlanczos,
                     int& Nsbt,
                     valarray<double>& TDa,
                     valarray<Field>& vk,
                     Fopr *fopr)
  {
    // #####  parameter setup  #####
    Bridge::VerboseLevel vl = CommonParameters::Vlevel();

    const string str_sortfield_type = params_irlanczos->get_string("eigensolver_mode");
    const int    Nk = params_irlanczos->get_int("number_of_wanted_eigenvectors");
    const int    Np = params_irlanczos->get_int("number_of_working_eigenvectors");

    Field_F b;
    int     Nin  = b.nin();
    int     Nvol = b.nvol();
    int     Nex  = b.nex();

    int Nmm = Nk + Np;

    TDa.resize(Nmm);
    vk.resize(Nmm);


    // ####  object setup  ####
    SortField *sort = SortField::New(str_sortfield_type);

    Eigensolver_IRLanczos *eigen = new Eigensolver_IRLanczos(fopr, sort);
    eigen->set_parameters(*params_irlanczos);


    // ####  Execution main part  ####
    for (int k = 0; k < Nmm; ++k) {
      vk[k].reset(Nin, Nvol, Nex);
    }
    int Nconv = -100;

    fopr->set_mode("H");
    eigen->solve(TDa, vk, Nsbt, Nconv, (Field)b);

    Field v;
    v.reset(Nin, Nvol, Nex);

    fopr->set_mode("H");
    for (int i = 0; i < Nsbt; ++i) {
      v  = fopr->mult(vk[i]);
      v -= TDa[i] * vk[i];
      double vv = v * v;

      vout.general(vl, "Eigenvalues: %4d %20.14f %20.15e\n", i, TDa[i], vv);
    }


    // #####  tidy up  #####
    delete eigen;
    delete sort;
  }
} // namespace Test_Spectrum_Overlap