test_Spectrum_Clover_2ptFunction_withFieldIO.cpp

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#include "test.h"

#include <sstream>

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

#include "randomNumbers_Mseries.h"

#include "fopr_Clover.h"
#include "fprop_Standard_lex.h"

#include "director_Smear.h"
#include "fopr_Smeared.h"

#include "gammaMatrixSet.h"
#include "gaugeFixing.h"
#include "projection.h"
#include "smear.h"
#include "solver.h"
#include "source.h"

#include "corr2pt_4spinor.h"

#include "fieldIO_Binary.h"

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

namespace Test_Spectrum_Clover {
  const std::string test_name = "Spectrum.Clover.Hadron2ptFunction_withFileIO";

  //- test-private parameters
  namespace {
    const std::string filename_input  = "test_Spectrum_Clover_Hadron2ptFunction.yaml";
    const std::string filename_output = "stdout";

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

        Register_int("number_of_valence_quarks", 0);

        Register_string("verbose_level", "NULL");

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

    class Parameters_Quark : virtual public Parameters {
     public:
      Parameters_Quark()
      {
        Register_string("temporary_filename_base", "NULL");

        Register_Parameters("Fopr_Clover", ParametersFactory::New("Fopr.Clover"));
        Register_Parameters("Source", ParametersFactory::New("Source"));
      }
    };
  }

  //- prototype declaration
  int hadron_2ptFunction_withFileIO(void);

  int calculate_quark_propagator();
  int calculate_hadron_correlator();

  string generate_filename(const string&, const int);
  string generate_filename(const string&, const int, const int);

#ifdef USE_TESTMANAGER_AUTOREGISTER
  namespace {
#if defined(USE_GROUP_SU2)
    // Nc=2 is not available.
#else
    static const bool is_registered = TestManager::RegisterTest(
      test_name,
      hadron_2ptFunction_withFileIO
      );
#endif
  }
#endif

  //====================================================================
  int hadron_2ptFunction_withFileIO(void)
  {
    int result = 0;

    Timer *timer = new Timer(test_name);


    // ####  Execution main part  ####
    timer->start();

    result += calculate_quark_propagator();
    result += calculate_hadron_correlator();

    timer->report();


    delete timer;

    return result;
  }


  //====================================================================
  string generate_filename(const string& base, const int idx)
  {
    char buf[1024];

    sprintf(buf, "%s_%02d.dat", base.c_str(), idx);

    return string(buf);
  }


  //====================================================================
  string generate_filename(const string& base, const int icolor, const int ispin)
  {
    char buf[1024];

    sprintf(buf, "%s_c%d_s%d.dat", base.c_str(), (icolor + 1), (ispin + 1));

    return string(buf);
  }


  //====================================================================
  int calculate_quark_propagator()
  {
    // ####  parameter setup  ####
    int Nc   = CommonParameters::Nc();
    int Nd   = CommonParameters::Nd();
    int Ndim = CommonParameters::Ndim();
    int Nvol = CommonParameters::Nvol();

    ParameterManager_YAML params_manager;

    Parameters *params_test = new Parameters_Test_Spectrum_Clover;
    Parameters *params_pre  = new Parameters;

    params_pre->Register_Parameters("Test_Spectrum_Clover", params_test);

    params_manager.read_params(filename_input, params_pre);


    const int                 N_quark = params_test->get_int("number_of_valence_quarks");
    std::vector<Parameters *> params_quark(N_quark);

    for (int iq = 0; iq < N_quark; ++iq) {
      params_quark[iq] = new Parameters_Quark;
    }

    Parameters *params_gfix     = ParametersFactory::New("GaugeFixing");
    Parameters *params_proj     = ParametersFactory::New("Projection");
    Parameters *params_smear    = ParametersFactory::New("Smear");
    Parameters *params_dr_smear = ParametersFactory::New("Director_Smear");
    Parameters *params_solver   = ParametersFactory::New("Solver");
    Parameters *params_all      = new Parameters;


    std::stringstream oss;

    for (int iq = 0; iq < N_quark; ++iq) {
      oss.str("");
      oss << "Quark_" << iq + 1;
      string str = oss.str();
      params_all->Register_Parameters(str.c_str(), params_quark[iq]);
    }

    params_all->Register_Parameters("GaugeFixing", params_gfix);
    params_all->Register_Parameters("Projection", params_proj);
    params_all->Register_Parameters("Smear", params_smear);
    params_all->Register_Parameters("Director_Smear", params_dr_smear);
    params_all->Register_Parameters("Solver", params_solver);

    params_manager.read_params(filename_input, params_all);

    const string str_gconf_status = params_test->get_string("gauge_config_status");
    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");

    const string str_gfix_type = params_gfix->get_string("gauge_fixing_type");

    std::vector<std::string>  savefile_base(N_quark);
    std::vector<Parameters *> params_clover(N_quark);
    std::vector<Parameters *> params_source(N_quark);

    for (int iq = 0; iq < N_quark; ++iq) {
      savefile_base[iq] = params_quark[iq]->get_string("temporary_filename_base");
      params_clover[iq] = params_quark[iq]->get_Parameters("Fopr_Clover");
      params_source[iq] = params_quark[iq]->get_Parameters("Source");
    }

    const string str_proj_type   = params_proj->get_string("projection_type");
    const string str_smear_type  = params_smear->get_string("smear_type");
    const string str_solver_type = params_solver->get_string("solver_type");

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

    //- print input parameters
    vout.general(vl, "  gconf_status = %s\n", str_gconf_status.c_str());
    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, "  proj_type    = %s\n", str_proj_type.c_str());
    vout.general(vl, "  smear_type   = %s\n", str_smear_type.c_str());
    vout.general(vl, "  solver_type  = %s\n", str_solver_type.c_str());

    // NB. all str_gmset_type are supposed to be the same.
    string str_gmset_type = params_clover[0]->get_string("gamma_matrix_type");
    vout.general(vl, "  gmset_type  = %s\n", str_gmset_type.c_str());

    std::vector<std::string> str_source_type(N_quark);

    for (int iq = 0; iq < N_quark; ++iq) {
      vout.general(vl, "  Quark_%d:\n", iq + 1);

      str_source_type[iq] = params_source[iq]->get_string("source_type");
      vout.general(vl, "    source_type = %s\n", str_source_type[iq].c_str());
    }
    vout.general(vl, "\n");

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

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


    // ####  Set up a gauge configuration  ####
    Field_G     *U          = new Field_G(Nvol, Ndim);
    GaugeConfig *gconf_read = new GaugeConfig(str_gconf_read);

    if (str_gconf_status == "Continue") {
      gconf_read->read_file((Field *)U, readfile);
    } else if (str_gconf_status == "Cold_start") {
      U->set_unit();
    } else if (str_gconf_status == "Hot_start") {
      RandomNumbers_Mseries rand(1234567);
      U->set_random(&rand);
    } else {
      vout.crucial(vl, "%s: unsupported gconf status \"%s\".\n", test_name.c_str(), str_gconf_status.c_str());
      abort();
    }

    Projection *proj  = Projection::New(str_proj_type);
    Smear      *smear = Smear::New(str_smear_type, proj);
    smear->set_parameters(*params_smear);

    Director_Smear *dr_smear = new Director_Smear((Smear *)smear);
    dr_smear->set_parameters(*params_dr_smear);
    dr_smear->set_config(U);

    int     Nsmear  = dr_smear->get_Nsmear();
    Field_G *Usmear = (Field_G *)dr_smear->getptr_smearedConfig(Nsmear);


    // ####  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(*Usmear);
    vout.general(vl, "plaq(original) = %18.14f\n", plaq);

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

    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  #####
    std::vector<Fopr_Clover *> fopr_c(N_quark);
    std::vector<Solver *>      solver(N_quark);
    std::vector<Fprop *>       fprop_lex(N_quark);
    std::vector<Source *>      source(N_quark);

    for (int iq = 0; iq < N_quark; ++iq) {
      fopr_c[iq] = new Fopr_Clover(str_gmset_type);
      fopr_c[iq]->set_parameters(*params_clover[iq]);
      fopr_c[iq]->set_config(Ufix);

      solver[iq] = Solver::New(str_solver_type, fopr_c[iq]);
      solver[iq]->set_parameters(*params_solver);

      fprop_lex[iq] = new Fprop_Standard_lex(solver[iq]);

      source[iq] = Source::New(str_source_type[iq]);
      source[iq]->set_parameters(*params_source[iq]);
    }
    vout.general(vl, "\n");

    FieldIO *field_io = new FieldIO_Binary(IO_Format::Trivial);


    // ####  Execution main part  ####
    Field_F xq, b;
    b = 0.0;

    int    Nconv;
    double diff, diff2;

    for (int iq = 0; iq < N_quark; ++iq) {
      vout.general(vl, "Solving quark propagator, flavor = %d:\n", iq + 1);
      vout.general(vl, "  color spin   Nconv      diff           diff2\n");

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

          fprop_lex[iq]->invert_D(xq, b, Nconv, diff);

          Field_F y(b);
          fopr_c[iq]->set_mode("D");
          fopr_c[iq]->mult(y, xq);  // y  = fopr_c[iq]->mult(xq);
          axpy(y, -1.0, b);         // y -= b;
          diff2 = y.norm2();

          vout.general(vl, "   %2d   %2d   %6d   %12.4e   %12.4e\n",
                       icolor, ispin, Nconv, diff, diff2);

          // fieldio->write_file(&xq, generate_filename(savefile_base[iq], idx));
          field_io->write_file(&xq, generate_filename(savefile_base[iq], icolor, ispin));
        }
      }

      vout.general(vl, "\n");
    }


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

    delete dr_smear;

    delete rand;
    delete staple;

    for (int iq = 0; iq < N_quark; ++iq) {
      delete fopr_c[iq];
      delete solver[iq];
      delete fprop_lex[iq];
      delete source[iq];
    }

    delete field_io;

    delete gfix;
    delete proj;
    delete smear;

    delete params_pre;
    delete params_test;
    delete params_gfix;
    delete params_proj;
    delete params_smear;
    delete params_dr_smear;
    delete params_solver;

    for (int iq = 0; iq < N_quark; ++iq) {
      delete params_clover[iq];
      delete params_source[iq];
      delete params_quark[iq];
    }

    delete params_all;


    return EXIT_SUCCESS;
  }


  //====================================================================
  int calculate_hadron_correlator()
  {
    // ####  parameter setup  ####
    int Nc   = CommonParameters::Nc();
    int Nd   = CommonParameters::Nd();
    int Ndim = CommonParameters::Ndim();
    int Nvol = CommonParameters::Nvol();

    ParameterManager_YAML params_manager;

    Parameters *params_test = new Parameters_Test_Spectrum_Clover;
    Parameters *params_pre  = new Parameters;

    params_pre->Register_Parameters("Test_Spectrum_Clover", params_test);

    params_manager.read_params(filename_input, params_pre);


    const int                 N_quark = params_test->get_int("number_of_valence_quarks");
    std::vector<Parameters *> params_quark(N_quark);

    for (int iq = 0; iq < N_quark; ++iq) {
      params_quark[iq] = new Parameters_Quark;
    }

    Parameters *params_all = new Parameters;


    std::ostringstream oss;

    for (int iq = 0; iq < N_quark; ++iq) {
      oss.str("");
      oss << "Quark_" << iq + 1;
      string str = oss.str();
      params_all->Register_Parameters(str.c_str(), params_quark[iq]);
    }

    params_manager.read_params(filename_input, params_all);

    const string str_vlevel = params_test->get_string("verbose_level");

    const bool   do_check        = params_test->is_set("expected_result");
    const double expected_result = do_check ? params_test->get_double("expected_result") : 0.0;

    std::vector<std::string>  savefile_base(N_quark);
    std::vector<Parameters *> params_clover(N_quark);
    std::vector<Parameters *> params_source(N_quark);

    for (int iq = 0; iq < N_quark; ++iq) {
      savefile_base[iq] = params_quark[iq]->get_string("temporary_filename_base");
      params_clover[iq] = params_quark[iq]->get_Parameters("Fopr_Clover");
      params_source[iq] = params_quark[iq]->get_Parameters("Source");
    }

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

    //- print input parameters
    vout.general(vl, "  vlevel      = %s\n", str_vlevel.c_str());

    // NB. all str_gmset_type are supposed to be the same.
    string str_gmset_type = params_clover[0]->get_string("gamma_matrix_type");
    vout.general(vl, "  gmset_type  = %s\n", str_gmset_type.c_str());


    // ####  Set up objects  #####
    GammaMatrixSet *gmset = GammaMatrixSet::New(str_gmset_type);

    FieldIO *field_io = new FieldIO_Binary(IO_Format::Trivial);


    // ####  Execution main part  ####
    typedef std::valarray<Field_F>   PropagatorSet;

    std::vector<PropagatorSet> sq(N_quark);
    for (int iq = 0; iq < N_quark; ++iq) {
      sq[iq].resize(Nc * Nd);

      for (int i = 0; i < Nc * Nd; ++i) {
        sq[iq][i] = 0.0;
      }
    }


    for (int iq = 0; iq < N_quark; ++iq) {
      for (int ispin = 0; ispin < Nd; ++ispin) {
        for (int icolor = 0; icolor < Nc; ++icolor) {
          int idx = icolor + Nc * ispin;

          field_io->read_file(&sq[iq][idx], generate_filename(savefile_base[iq], icolor, ispin));
        }
      }
    }


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

    vout.general(vl, "2-point correlator:\n");
    Corr2pt_4spinor  corr(gmset);
    valarray<double> result(N_quark);

    //- case(iq_1 == iq_2)
    for (int iq = 0; iq < N_quark; ++iq) {
      vout.general(vl, "Flavor combination = %d, %d\n", iq + 1, iq + 1);
      result[iq] = corr.meson_all(sq[iq], sq[iq]);
      vout.general(vl, "\n");
    }


    //- case(iq_1 < iq_2)
    for (int iq = 0; iq < N_quark; ++iq) {
      for (int jq = iq + 1; jq < N_quark; ++jq) {
        vout.general(vl, "Flavor combination = %d, %d\n", iq + 1, jq + 1);
        double result_2 = corr.meson_all(sq[iq], sq[jq]);
        vout.general(vl, "\n");
      }
    }

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


    // ####  tidy up  ####
    delete params_pre;
    delete params_test;

    for (int iq = 0; iq < N_quark; ++iq) {
      delete params_clover[iq];
      delete params_source[iq];
      delete params_quark[iq];
    }

    delete params_all;

    delete gmset;

    delete field_io;


    if (do_check) {
      return Test::verify(expected_result, result[0]);
    } else {
      vout.detailed(vl, "check skipped: expected_result not set.\n\n");
      return EXIT_SKIP;
    }
  }
} // namespace Test_Spectrum_Clover