test_Spectrum_CRSMatrix_Domainwall.cpp

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#include "parameterManager_YAML.h"

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

#include "fopr_CRS.h"
#include "fopr_Wilson.h"
#include "fopr_Domainwall.h"

#include "gaugeConfig.h"

#include "source_4spinor_Local.h"

#include "solver_CG.h"

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

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

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

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

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

        Register_string("matrix_output", "NULL");
        Register_string("source_output", "NULL");
        Register_string("solution_output", "NULL");

        Register_string("verbose_level", "NULL");

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

  //- prototype declaration
  int domainwall(void);

  int CRSsolver(
    const string& solution,
    const string& matrix,
    const string& source,
    double& result       /* return value */
    );


#ifdef USE_TESTMANAGER_AUTOREGISTER
#ifdef USE_MPI
  // this test runs only in single-node environment.
#else
  //- NB. CRS test is skipped, because it is time-consuming.
  // namespace {
  //   static const bool is_registered = TestManager::RegisterTest(
  //     "Spectrum.CRSMatrix.Domainwall",
  //     domainwall
  //     );
  // }
#endif
#endif

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

    Parameters_Test_Spectrum_CRSMatrix params_test;

    Parameters params_all;

    params_all.Register_Parameters("Test_Spectrum_CRSMatrix", &params_test);

    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 matrix_file    = params_test.get_string("matrix_output");
    const string source_file    = params_test.get_string("source_output");
    const string solution_file  = params_test.get_string("solution_output");
    const string str_vlevel     = params_test.get_string("verbose_level");
#ifdef USE_TEST
    const double expected_result = params_test.get_double("expected_result");
#endif

    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, "  matrix_output   = %s\n", matrix_file.c_str());
    vout.general(vl, "  source_output   = %s\n", source_file.c_str());
    vout.general(vl, "  solution_output = %s\n", solution_file.c_str());
    vout.general(vl, "  vlevel          = %s\n", str_vlevel.c_str());
    vout.general(vl, "\n");

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

    if (err) {
      vout.crucial(vl, "Test_Spectrum_CRSMatrix: 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);


    // ####  object setup  #####
    Fopr_Wilson     *fopr_w  = new Fopr_Wilson;
    Fopr_Domainwall *fopr_dw = new Fopr_Domainwall(fopr_w);
    double          mq       = 0.1;
    double          M0       = 1.6;
    int             Ns       = 8;
    valarray<int>   boundary(Ndim);
    boundary[0] = 1;
    boundary[1] = 1;
    boundary[2] = 1;
    boundary[3] = -1;
    fopr_dw->set_parameters(mq, M0, Ns, boundary);
    fopr_dw->set_config(U);

    fopr_dw->set_mode("D");
    Fopr_CRS *fopr_crs = new Fopr_CRS(fopr_dw);
    fopr_crs->write_matrix(matrix_file);

    valarray<int> source_position(Ndim);
    source_position[0] = 0;
    source_position[1] = 0;
    source_position[2] = 0;
    source_position[3] = 0;
    Source_4spinor_Local *source = new Source_4spinor_Local();
    source->set_parameters(source_position);

    //- CGNE solver
    int    Niter     = 2000;
    double Stop_cond = 1.0e-28;
    Solver *solver   = new Solver_CG(fopr_dw);
    solver->set_parameters(Niter, Stop_cond);


    // ####  Execution main part  ####
    Field_F b(Nvol, 1);
    Field_F xq(Nvol, 1);

    int Nin = 2 * Nc * Nd;
    int Nex = Ns;

    Field bt(Nin, Nvol, 1);
    Field xt(Nin, Nvol, 1), xt2(Nin, Nvol, 1);

    Field b_5d(Nin, Nvol, Nex), bt_5d(Nin, Nvol, Nex);
    Field xq_5d(Nin, Nvol, Nex);

    double diff = 0.0L;
    {
      int ispin = 0;
      {
        int icolor = 0;
        {
          int ch = -1;
          // for(int ispin = 0; ispin < Nd; ++ispin){
          //  for(int icolor = 0; icolor < Nc; ++icolor){
          //   for(int ch = -1; ch <= 1; ch = ch+2){

          //     source->mksrc(b,ispin,icolor);
          source->set(b, icolor, ispin);

          bt = fopr_dw->mult_chproj_4d(b, ch);

          bt_5d = 0.0;
          if (ch == -1) {
            bt_5d.setpart_ex(Nex - 1, bt, 0);
          } else {
            bt_5d.setpart_ex(0, bt, 0);
          }

          //- save the source vector
          bt_5d.write_text(source_file);

          fopr_dw->set_mode("Ddag");
          b_5d = fopr_dw->mult(bt_5d);

          vout.general(vl, " b_5d norm2 = %14.6e\n", b_5d.norm2());

          int Nconv;
          fopr_dw->set_mode("DdagD");
          solver->solve(xq_5d, b_5d, Nconv, diff);
          vout.general(vl, "  chirality: %2d\n", ch);
          vout.general(vl, "    Nconv = %d,  diff = %16.8e\n", Nconv, diff);

          //- save the solution vector
          xq_5d.write_text(solution_file);
        }
      }
    }


    double result;
    CRSsolver(solution_file, matrix_file, source_file, result);


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

    delete solver;
    delete source;
    delete fopr_crs;
    delete fopr_dw;
    delete fopr_w;


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

#else
    return EXIT_SUCCESS;
#endif
  }
} // namespace Test_Spectrum_CRSMatrix