fopr_Wilson_impl.cpp

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#include <valarray>
using std::valarray;
#include <string>
using std::string;

#include "fopr_Wilson_impl.h"

#include "threadManager_OpenMP.h"

//#define USE_SU2

#if defined USE_GROUP_SU3
#include "fopr_Wilson_impl_SU3.inc"
#elif defined USE_GROUP_SU2
#include "fopr_Wilson_impl_SU2.inc"
#elif defined USE_GROUP_SU_N
#include "fopr_Wilson_impl_SU_N.inc"
#endif

const std::string Fopr_Wilson::Fopr_Wilson_impl::class_name = "Fopr_Wilson_impl";

//====================================================================
void Fopr_Wilson::Fopr_Wilson_impl::init(string repr)
{
  m_vl = CommonParameters::Vlevel();

  vout.general(m_vl, "%s: Construction of Wilson fermion operator(imp).\n", class_name.c_str());

  check_Nc();

  m_Nc  = CommonParameters::Nc();
  m_Nd  = CommonParameters::Nd();
  m_Nvc = 2 * m_Nc;
  m_Ndf = 2 * m_Nc * m_Nc;

  m_Nx = CommonParameters::Nx();
  m_Ny = CommonParameters::Ny();
  m_Nz = CommonParameters::Nz();
  m_Nt = CommonParameters::Nt();

  m_Nvol = CommonParameters::Nvol();
  m_Ndim = CommonParameters::Ndim();
  m_boundary.resize(m_Ndim);
  m_boundary2.resize(m_Ndim);

  m_repr = repr;

  m_GM.resize(m_Ndim + 1);

  GammaMatrixSet *gmset = GammaMatrixSet::New(m_repr);

  m_GM[0] = gmset->get_GM(GammaMatrixSet::GAMMA1);
  m_GM[1] = gmset->get_GM(GammaMatrixSet::GAMMA2);
  m_GM[2] = gmset->get_GM(GammaMatrixSet::GAMMA3);
  m_GM[3] = gmset->get_GM(GammaMatrixSet::GAMMA4);
  m_GM[4] = gmset->get_GM(GammaMatrixSet::GAMMA5);

  delete gmset;

  m_U = 0;

  m_mult     = &Fopr_Wilson::Fopr_Wilson_impl::mult_undef;
  m_mult_dag = &Fopr_Wilson::Fopr_Wilson_impl::mult_undef;

  if (m_repr == "Dirac") {
    m_D       = &Fopr_Wilson::Fopr_Wilson_impl::D_dirac;
    m_gm5     = &Fopr_Wilson::Fopr_Wilson_impl::gm5_dirac;
    m_mult_tp = &Fopr_Wilson::Fopr_Wilson_impl::mult_tp_dirac;
    m_mult_tm = &Fopr_Wilson::Fopr_Wilson_impl::mult_tm_dirac;
    m_D_ex    = &Fopr_Wilson::Fopr_Wilson_impl::D_ex_dirac;
  } else if (m_repr == "Chiral") {
    m_D       = &Fopr_Wilson::Fopr_Wilson_impl::D_chiral;
    m_gm5     = &Fopr_Wilson::Fopr_Wilson_impl::gm5_chiral;
    m_mult_tp = &Fopr_Wilson::Fopr_Wilson_impl::mult_tp_chiral;
    m_mult_tm = &Fopr_Wilson::Fopr_Wilson_impl::mult_tm_chiral;
    m_D_ex    = &Fopr_Wilson::Fopr_Wilson_impl::D_ex_chiral;
  } else {
    vout.crucial(m_vl, "%s: input repr is undefined.\n", class_name.c_str());
    abort();
  }

  m_w1.reset(m_Nvc * m_Nd, m_Nvol, 1);
  m_w2.reset(m_Nvc * m_Nd, m_Nvol, 1);

  int Nvx = m_Nvc * 2 * m_Ny * m_Nz * m_Nt;
  vcp1_xp = new double[Nvx];
  vcp2_xp = new double[Nvx];
  vcp1_xm = new double[Nvx];
  vcp2_xm = new double[Nvx];

  int Nvy = m_Nvc * 2 * m_Nx * m_Nz * m_Nt;
  vcp1_yp = new double[Nvy];
  vcp2_yp = new double[Nvy];
  vcp1_ym = new double[Nvy];
  vcp2_ym = new double[Nvy];

  int Nvz = m_Nvc * 2 * m_Nx * m_Ny * m_Nt;
  vcp1_zp = new double[Nvz];
  vcp2_zp = new double[Nvz];
  vcp1_zm = new double[Nvz];
  vcp2_zm = new double[Nvz];

  int Nvt = m_Nvc * 2 * m_Nx * m_Ny * m_Nz;
  vcp1_tp = new double[Nvt];
  vcp2_tp = new double[Nvt];
  vcp1_tm = new double[Nvt];
  vcp2_tm = new double[Nvt];

  setup_thread();
}

//====================================================================
void Fopr_Wilson::Fopr_Wilson_impl::set_mode(std::string mode)
{
  m_mode = mode;

  if (m_mode == "D") {
    m_mult     = &Fopr_Wilson::Fopr_Wilson_impl::D;
    m_mult_dag = &Fopr_Wilson::Fopr_Wilson_impl::Ddag;
  } else if (m_mode == "Ddag") {
    m_mult     = &Fopr_Wilson::Fopr_Wilson_impl::Ddag;
    m_mult_dag = &Fopr_Wilson::Fopr_Wilson_impl::D;
  } else if (m_mode == "DdagD") {
    m_mult     = &Fopr_Wilson::Fopr_Wilson_impl::DdagD;
    m_mult_dag = &Fopr_Wilson::Fopr_Wilson_impl::DdagD;
  } else if (m_mode == "DDdag") {
    m_mult     = &Fopr_Wilson::Fopr_Wilson_impl::DDdag;
    m_mult_dag = &Fopr_Wilson::Fopr_Wilson_impl::DDdag;
  } else if (m_mode == "H") {
    m_mult     = &Fopr_Wilson::Fopr_Wilson_impl::H;
    m_mult_dag = &Fopr_Wilson::Fopr_Wilson_impl::H;
  } else {
    vout.crucial(m_vl, "%s: input mode is undefined.\n", class_name.c_str());
    abort();
  }

}

//====================================================================
void Fopr_Wilson::Fopr_Wilson_impl::tidyup()
{
  delete[]  vcp1_xp;
  delete[]  vcp2_xp;
  delete[]  vcp1_xm;
  delete[]  vcp2_xm;

  delete[]  vcp1_yp;
  delete[]  vcp2_yp;
  delete[]  vcp1_ym;
  delete[]  vcp2_ym;

  delete[]  vcp1_zp;
  delete[]  vcp2_zp;
  delete[]  vcp1_zm;
  delete[]  vcp2_zm;

  delete[]  vcp1_tp;
  delete[]  vcp2_tp;
  delete[]  vcp1_tm;
  delete[]  vcp2_tm;
}

//====================================================================
std::string Fopr_Wilson::Fopr_Wilson_impl::get_mode() const
{
  return m_mode;
}

//====================================================================
void Fopr_Wilson::Fopr_Wilson_impl::set_parameters(const double kappa,
                                                   const valarray<int> bc)
{
  assert(bc.size() == m_Ndim);

  m_kappa = kappa;

  for (int mu = 0; mu < m_Ndim; ++mu) {
    m_boundary[mu] = bc[mu];
  }

  vout.general(m_vl, "%s: input parameters\n", class_name.c_str());
  vout.general(m_vl, "  kappa  = %8.4f\n", m_kappa);
  for (int mu = 0; mu < m_Ndim; ++mu) {
    vout.general(m_vl, "  boundary[%d] = %2d\n", mu, m_boundary[mu]);
  }

  // boundary condition for each node:
  for (int idir = 0; idir < m_Ndim; ++idir) {
    m_boundary2[idir] = 1.0;
    if (Communicator::ipe(idir) == 0) m_boundary2[idir] = m_boundary[idir];
  }

}

//====================================================================
double Fopr_Wilson::Fopr_Wilson_impl::flop_count()
{
  // The following counting explicitly depends on the implementation.
  // It will be recalculated when the code is modified.
  // The present counting is based on rev.1107. [24 Aug 2014 H.Matsufuru]

  int    Lvol = CommonParameters::Lvol();
  double flop_site, flop;

  if (m_repr == "Dirac") {
    flop_site = static_cast<double>(
      m_Nc * m_Nd * (4 + 6 * (4 * m_Nc + 2) + 2 * (4 * m_Nc + 1)));
  } else if (m_repr == "Chiral") {
    flop_site = static_cast<double>(
      m_Nc * m_Nd * (4 + 8 * (4 * m_Nc + 2)));
  } else {
    vout.crucial(m_vl, "%s: input repr is undefined.\n",
                 class_name.c_str());
    abort();
  }

  flop = flop_site * static_cast<double>(Lvol);

  if ((m_mode == "DdagD") || (m_mode == "DDdag")) flop *= 2.0;

  return flop;
}

//====================================================================
void Fopr_Wilson::Fopr_Wilson_impl::D_dirac(Field& w, const Field& f)
{
  D_ex_dirac(w, 0, f, 0);
}

//====================================================================
void Fopr_Wilson::Fopr_Wilson_impl::D_chiral(Field& w, const Field& f)
{
  D_ex_chiral(w, 0, f, 0);
}

//====================================================================
void Fopr_Wilson::Fopr_Wilson_impl::mult_up(int mu,
                                            Field& w, const Field& f)
{
  if (mu == 0) {
    mult_xp(w, f);
  } else if (mu == 1) {
    mult_yp(w, f);
  } else if (mu == 2) {
    mult_zp(w, f);
  } else if (mu == 3) {
    (this->*m_mult_tp)(w, f);
  } else {
    vout.crucial(m_vl, "%s: illegal direction of mu in mult_up.\n", class_name.c_str());
    abort();
  }

}

//====================================================================
void Fopr_Wilson::Fopr_Wilson_impl::mult_dn(int mu, Field& w, const Field& f)
{
  if (mu == 0) {
    mult_xm(w, f);
  } else if (mu == 1) {
    mult_ym(w, f);
  } else if (mu == 2) {
    mult_zm(w, f);
  } else if (mu == 3) {
    (this->*m_mult_tm)(w, f);
  } else {
    vout.crucial(m_vl, "%s: illegal direction of mu in mult_dn.\n", class_name.c_str());
    abort();
  }

}

//====================================================================
void Fopr_Wilson::Fopr_Wilson_impl::D_ex_dirac(Field& w, const int ex1,
                                               const Field& f, const int ex2)
{
  int    Ninvol = m_Nvc * m_Nd * m_Nvol;
  double *v1    = const_cast<Field *>(&f)->ptr(Ninvol * ex2);
  double *v2    = w.ptr(Ninvol * ex1);

  int nth = ThreadManager_OpenMP::get_num_threads();
  int ith = ThreadManager_OpenMP::get_thread_id();

  int is = m_Ntask * ith / nth;
  int ns = m_Ntask * (ith + 1) / nth - is;

  for (int i = is; i < is + ns; ++i) {
    mult_xp1_thread(i, vcp1_xp, v1);
    mult_xm1_thread(i, vcp1_xm, v1);
    mult_yp1_thread(i, vcp1_yp, v1);
    mult_ym1_thread(i, vcp1_ym, v1);
    mult_zp1_thread(i, vcp1_zp, v1);
    mult_zm1_thread(i, vcp1_zm, v1);
    mult_tp1_dirac_thread(i, vcp1_tp, v1);
    mult_tm1_dirac_thread(i, vcp1_tm, v1);
  }
  #pragma omp barrier

  #pragma omp master
  {
    int Nvx = m_Nvc * 2 * m_Ny * m_Nz * m_Nt;
    Communicator::exchange(Nvx, vcp2_xp, vcp1_xp, 0, 1, 1);
    Communicator::exchange(Nvx, vcp2_xm, vcp1_xm, 0, -1, 2);

    int Nvy = m_Nvc * 2 * m_Nx * m_Nz * m_Nt;
    Communicator::exchange(Nvy, vcp2_yp, vcp1_yp, 1, 1, 3);
    Communicator::exchange(Nvy, vcp2_ym, vcp1_ym, 1, -1, 4);

    int Nvz = m_Nvc * 2 * m_Nx * m_Ny * m_Nt;
    Communicator::exchange(Nvz, vcp2_zp, vcp1_zp, 2, 1, 5);
    Communicator::exchange(Nvz, vcp2_zm, vcp1_zm, 2, -1, 6);

    int Nvt = m_Nvc * 2 * m_Nx * m_Ny * m_Nz;
    Communicator::exchange(Nvt, vcp2_tp, vcp1_tp, 3, 1, 7);
    Communicator::exchange(Nvt, vcp2_tm, vcp1_tm, 3, -1, 8);
  }
  #pragma omp barrier

  for (int i = is; i < is + ns; ++i) {
    clear_thread(i, v2);
    mult_xpb_thread(i, v2, v1);
    mult_xmb_thread(i, v2, v1);
    mult_ypb_thread(i, v2, v1);
    mult_ymb_thread(i, v2, v1);
    mult_zpb_thread(i, v2, v1);
    mult_zmb_thread(i, v2, v1);
    mult_tpb_dirac_thread(i, v2, v1);
    mult_tmb_dirac_thread(i, v2, v1);
  }

  for (int i = is; i < is + ns; ++i) {
    mult_xp2_thread(i, v2, vcp2_xp);
    mult_xm2_thread(i, v2, vcp2_xm);
    mult_yp2_thread(i, v2, vcp2_yp);
    mult_ym2_thread(i, v2, vcp2_ym);
    mult_zp2_thread(i, v2, vcp2_zp);
    mult_zm2_thread(i, v2, vcp2_zm);
    mult_tp2_dirac_thread(i, v2, vcp2_tp);
    mult_tm2_dirac_thread(i, v2, vcp2_tm);
    daypx_thread(i, v2, -m_kappa, v1);   // w = -m_kappa * w + f.
  }

  ThreadManager_OpenMP::sync_barrier_all();
}

//====================================================================
void Fopr_Wilson::Fopr_Wilson_impl::D_ex_chiral(Field& w, const int ex1,
                                                const Field& f, const int ex2)
{
  int    Ninvol = m_Nvc * m_Nd * m_Nvol;
  double *v1    = const_cast<Field *>(&f)->ptr(Ninvol * ex2);
  double *v2    = w.ptr(Ninvol * ex1);

  int nth = ThreadManager_OpenMP::get_num_threads();
  int ith = ThreadManager_OpenMP::get_thread_id();

  int is = m_Ntask * ith / nth;
  int ns = m_Ntask * (ith + 1) / nth - is;

  for (int i = is; i < is + ns; ++i) {
    mult_xp1_thread(i, vcp1_xp, v1);
    mult_xm1_thread(i, vcp1_xm, v1);
    mult_yp1_thread(i, vcp1_yp, v1);
    mult_ym1_thread(i, vcp1_ym, v1);
    mult_zp1_thread(i, vcp1_zp, v1);
    mult_zm1_thread(i, vcp1_zm, v1);
    mult_tp1_chiral_thread(i, vcp1_tp, v1);
    mult_tm1_chiral_thread(i, vcp1_tm, v1);
  }
  #pragma omp barrier

  #pragma omp master
  {
    int Nvx = m_Nvc * 2 * m_Ny * m_Nz * m_Nt;
    Communicator::exchange(Nvx, vcp2_xp, vcp1_xp, 0, 1, 1);
    Communicator::exchange(Nvx, vcp2_xm, vcp1_xm, 0, -1, 2);

    int Nvy = m_Nvc * 2 * m_Nx * m_Nz * m_Nt;
    Communicator::exchange(Nvy, vcp2_yp, vcp1_yp, 1, 1, 3);
    Communicator::exchange(Nvy, vcp2_ym, vcp1_ym, 1, -1, 4);

    int Nvz = m_Nvc * 2 * m_Nx * m_Ny * m_Nt;
    Communicator::exchange(Nvz, vcp2_zp, vcp1_zp, 2, 1, 5);
    Communicator::exchange(Nvz, vcp2_zm, vcp1_zm, 2, -1, 6);

    int Nvt = m_Nvc * 2 * m_Nx * m_Ny * m_Nz;
    Communicator::exchange(Nvt, vcp2_tp, vcp1_tp, 3, 1, 7);
    Communicator::exchange(Nvt, vcp2_tm, vcp1_tm, 3, -1, 8);
  }
  #pragma omp barrier

  for (int i = is; i < is + ns; ++i) {
    clear_thread(i, v2);
    mult_xpb_thread(i, v2, v1);
    mult_xmb_thread(i, v2, v1);
    mult_ypb_thread(i, v2, v1);
    mult_ymb_thread(i, v2, v1);
    mult_zpb_thread(i, v2, v1);
    mult_zmb_thread(i, v2, v1);
    mult_tpb_chiral_thread(i, v2, v1);
    mult_tmb_chiral_thread(i, v2, v1);
  }

  for (int i = is; i < is + ns; ++i) {
    mult_xp2_thread(i, v2, vcp2_xp);
    mult_xm2_thread(i, v2, vcp2_xm);
    mult_yp2_thread(i, v2, vcp2_yp);
    mult_ym2_thread(i, v2, vcp2_ym);
    mult_zp2_thread(i, v2, vcp2_zp);
    mult_zm2_thread(i, v2, vcp2_zm);
    mult_tp2_chiral_thread(i, v2, vcp2_tp);
    mult_tm2_chiral_thread(i, v2, vcp2_tm);
    daypx_thread(i, v2, -m_kappa, v1);   // w = -m_kappa * w + f.
  }

  ThreadManager_OpenMP::sync_barrier_all();

  /*
   clear(w);
   mult_xp(w,f);
   mult_xm(w,f);
   mult_yp(w,f);
   mult_ym(w,f);
   mult_zp(w,f);
   mult_zm(w,f);
   mult_tp_chiral(w,f);
   mult_tm_chiral(w,f);
   daypx(w, -m_kappa, f);   // w = -m_kappa * w + f.
  */
}

//====================================================================
void Fopr_Wilson::Fopr_Wilson_impl::mult_gm5p(int mu,
                                              Field& v, const Field& w)
{
  clear(m_w2);

  mult_up(mu, m_w2, w);
  mult_gm5(v, m_w2);
}

//====================================================================
void Fopr_Wilson::Fopr_Wilson_impl::proj_chiral(Field& w, const int ex1,
                                                const Field& v, const int ex2, const int ipm)
{
  double fpm = 0.0;

  if (ipm == 1) {
    fpm = 1.0;
  } else if (ipm == -1) {
    fpm = -1.0;
  } else {
    vout.crucial(m_vl, "%s: illegal chirality = %d.\n", class_name.c_str(), ipm);
    abort();
  }

  m_w1.setpart_ex(0, v, ex2);
  mult_gm5(m_w2, m_w1);
  m_w1.addpart_ex(0, m_w2, 0, fpm);
  w.setpart_ex(ex1, m_w1, 0);
}

//====================================================================
void Fopr_Wilson::Fopr_Wilson_impl::daypx(Field& w,
                                          double fac, const Field& f)
{
  double *v1 = const_cast<Field *>(&f)->ptr(0);
  double *v2 = w.ptr(0);

  int nth = ThreadManager_OpenMP::get_num_threads();
  int ith = ThreadManager_OpenMP::get_thread_id();

  int is = m_Ntask * ith / nth;
  int ns = m_Ntask * (ith + 1) / nth - is;

  for (int i = is; i < is + ns; ++i) {
    daypx_thread(i, v2, fac, v1);
  }

}

//====================================================================
void Fopr_Wilson::Fopr_Wilson_impl::clear(Field& w)
{
  double *v2 = w.ptr(0);

  int nth = ThreadManager_OpenMP::get_num_threads();
  int ith = ThreadManager_OpenMP::get_thread_id();

  int is = m_Ntask * ith / nth;
  int ns = m_Ntask * (ith + 1) / nth - is;

  for (int i = is; i < is + ns; ++i) {
    clear_thread(i, v2);
  }

}

//====================================================================
void Fopr_Wilson::Fopr_Wilson_impl::gm5_dirac(Field& w, const Field& f)
{
  double *v1 = const_cast<Field *>(&f)->ptr(0);
  double *v2 = w.ptr(0);

  int nth = ThreadManager_OpenMP::get_num_threads();
  int ith = ThreadManager_OpenMP::get_thread_id();

  int is = m_Ntask * ith / nth;
  int ns = m_Ntask * (ith + 1) / nth - is;

  for (int i = is; i < is + ns; ++i) {
    gm5_dirac_thread(i, v2, v1);
  }

}

//====================================================================
void Fopr_Wilson::Fopr_Wilson_impl::gm5_chiral(Field& w, const Field& f)
{
  double *v1 = const_cast<Field *>(&f)->ptr(0);
  double *v2 = w.ptr(0);

  int nth = ThreadManager_OpenMP::get_num_threads();
  int ith = ThreadManager_OpenMP::get_thread_id();

  int is = m_Ntask * ith / nth;
  int ns = m_Ntask * (ith + 1) / nth - is;

  for (int i = is; i < is + ns; ++i) {
    gm5_chiral_thread(i, v2, v1);
  }

}

//====================================================================
void Fopr_Wilson::Fopr_Wilson_impl::mult_xp(Field& w, const Field& f)
{
  double *v1 = const_cast<Field *>(&f)->ptr(0);
  double *v2 = w.ptr(0);

  int nth = ThreadManager_OpenMP::get_num_threads();
  int ith = ThreadManager_OpenMP::get_thread_id();

  int is = m_Ntask * ith / nth;
  int ns = m_Ntask * (ith + 1) / nth - is;

#pragma omp barrier

  for (int i = is; i < is + ns; ++i) {
    mult_xp1_thread(i, vcp1_xp, v1);
  }
  #pragma omp barrier

  #pragma omp master
  {
    int Nv = m_Nvc * 2 * m_Ny * m_Nz * m_Nt;
    Communicator::exchange(Nv, vcp2_xp, vcp1_xp, 0, 1, 1);
  }
  #pragma omp barrier

  for (int i = is; i < is + ns; ++i) {
    mult_xpb_thread(i, v2, v1);
  }

  for (int i = is; i < is + ns; ++i) {
    mult_xp2_thread(i, v2, vcp2_xp);
  }

  ThreadManager_OpenMP::sync_barrier_all();
}

//====================================================================
void Fopr_Wilson::Fopr_Wilson_impl::mult_xm(Field& w, const Field& f)
{
  double *v2 = w.ptr(0);
  double *v1 = const_cast<Field *>(&f)->ptr(0);

  int nth = ThreadManager_OpenMP::get_num_threads();
  int ith = ThreadManager_OpenMP::get_thread_id();

  int is = m_Ntask * ith / nth;
  int ns = m_Ntask * (ith + 1) / nth - is;

#pragma omp barrier

  for (int i = is; i < is + ns; ++i) {
    mult_xm1_thread(i, vcp1_xm, v1);
  }
  #pragma omp barrier

  #pragma omp master
  {
    int Nv = m_Nvc * 2 * m_Ny * m_Nz * m_Nt;
    Communicator::exchange(Nv, vcp2_xm, vcp1_xm, 0, -1, 2);
  }
  #pragma omp barrier

  for (int i = is; i < is + ns; ++i) {
    mult_xmb_thread(i, v2, v1);
  }

  for (int i = is; i < is + ns; ++i) {
    mult_xm2_thread(i, v2, vcp2_xm);
  }

  ThreadManager_OpenMP::sync_barrier_all();
}

//====================================================================
void Fopr_Wilson::Fopr_Wilson_impl::mult_yp(Field& w, const Field& f)
{
  double *v1 = const_cast<Field *>(&f)->ptr(0);
  double *v2 = w.ptr(0);

  int nth = ThreadManager_OpenMP::get_num_threads();
  int ith = ThreadManager_OpenMP::get_thread_id();

  int is = m_Ntask * ith / nth;
  int ns = m_Ntask * (ith + 1) / nth - is;

#pragma omp barrier

  for (int i = is; i < is + ns; ++i) {
    mult_yp1_thread(i, vcp1_yp, v1);
  }
  #pragma omp barrier

  #pragma omp master
  {
    int Nv = m_Nvc * 2 * m_Nx * m_Nz * m_Nt;
    Communicator::exchange(Nv, vcp2_yp, vcp1_yp, 1, 1, 3);
  }
  #pragma omp barrier

  for (int i = is; i < is + ns; ++i) {
    mult_ypb_thread(i, v2, v1);
  }

  for (int i = is; i < is + ns; ++i) {
    mult_yp2_thread(i, v2, vcp2_yp);
  }

  ThreadManager_OpenMP::sync_barrier_all();
}

//====================================================================
void Fopr_Wilson::Fopr_Wilson_impl::mult_ym(Field& w, const Field& f)
{
  double *v2 = w.ptr(0);
  double *v1 = const_cast<Field *>(&f)->ptr(0);

  int nth = ThreadManager_OpenMP::get_num_threads();
  int ith = ThreadManager_OpenMP::get_thread_id();

  int is = m_Ntask * ith / nth;
  int ns = m_Ntask * (ith + 1) / nth - is;

#pragma omp barrier

  for (int i = is; i < is + ns; ++i) {
    mult_ym1_thread(i, vcp1_ym, v1);
  }
  #pragma omp barrier

  #pragma omp master
  {
    int Nv = m_Nvc * 2 * m_Nx * m_Nz * m_Nt;
    Communicator::exchange(Nv, vcp2_ym, vcp1_ym, 1, -1, 4);
  }
  #pragma omp barrier

  for (int i = is; i < is + ns; ++i) {
    mult_ymb_thread(i, v2, v1);
  }

  for (int i = is; i < is + ns; ++i) {
    mult_ym2_thread(i, v2, vcp2_ym);
  }

  ThreadManager_OpenMP::sync_barrier_all();
}

//====================================================================
void Fopr_Wilson::Fopr_Wilson_impl::mult_zp(Field& w, const Field& f)
{
  double *v1 = const_cast<Field *>(&f)->ptr(0);
  double *v2 = w.ptr(0);

  int nth = ThreadManager_OpenMP::get_num_threads();
  int ith = ThreadManager_OpenMP::get_thread_id();

  int is = m_Ntask * ith / nth;
  int ns = m_Ntask * (ith + 1) / nth - is;

#pragma omp barrier

  for (int i = is; i < is + ns; ++i) {
    mult_zp1_thread(i, vcp1_zp, v1);
  }
  #pragma omp barrier

  #pragma omp master
  {
    int Nv = m_Nvc * 2 * m_Nx * m_Ny * m_Nt;
    Communicator::exchange(Nv, vcp2_zp, vcp1_zp, 2, 1, 5);
  }
  #pragma omp barrier

  for (int i = is; i < is + ns; ++i) {
    mult_zpb_thread(i, v2, v1);
  }

  for (int i = is; i < is + ns; ++i) {
    mult_zp2_thread(i, v2, vcp2_zp);
  }

  ThreadManager_OpenMP::sync_barrier_all();
}

//====================================================================
void Fopr_Wilson::Fopr_Wilson_impl::mult_zm(Field& w, const Field& f)
{
  double *v2 = w.ptr(0);
  double *v1 = const_cast<Field *>(&f)->ptr(0);

  int nth = ThreadManager_OpenMP::get_num_threads();
  int ith = ThreadManager_OpenMP::get_thread_id();

  int is = m_Ntask * ith / nth;
  int ns = m_Ntask * (ith + 1) / nth - is;

#pragma omp barrier

  for (int i = is; i < is + ns; ++i) {
    mult_zm1_thread(i, vcp1_zm, v1);
  }
  #pragma omp barrier

  #pragma omp master
  {
    int Nv = m_Nvc * 2 * m_Nx * m_Ny * m_Nt;
    Communicator::exchange(Nv, vcp2_zm, vcp1_zm, 2, -1, 6);
  }
  #pragma omp barrier

  for (int i = is; i < is + ns; ++i) {
    mult_zmb_thread(i, v2, v1);
  }

  for (int i = is; i < is + ns; ++i) {
    mult_zm2_thread(i, v2, vcp2_zm);
  }

  ThreadManager_OpenMP::sync_barrier_all();
}

//====================================================================
void Fopr_Wilson::Fopr_Wilson_impl::mult_tp_dirac(Field& w, const Field& f)
{
  double *v1 = const_cast<Field *>(&f)->ptr(0);
  double *v2 = w.ptr(0);

  int nth = ThreadManager_OpenMP::get_num_threads();
  int ith = ThreadManager_OpenMP::get_thread_id();

  int is = m_Ntask * ith / nth;
  int ns = m_Ntask * (ith + 1) / nth - is;

#pragma omp barrier

  for (int i = is; i < is + ns; ++i) {
    mult_tp1_dirac_thread(i, vcp1_tp, v1);
  }
  #pragma omp barrier

  #pragma omp master
  {
    int Nv = m_Nvc * 2 * m_Nx * m_Ny * m_Nz;
    Communicator::exchange(Nv, vcp2_tp, vcp1_tp, 3, 1, 7);
  }
  #pragma omp barrier

  for (int i = is; i < is + ns; ++i) {
    mult_tpb_dirac_thread(i, v2, v1);
  }

  for (int i = is; i < is + ns; ++i) {
    mult_tp2_dirac_thread(i, v2, vcp2_tp);
  }

  ThreadManager_OpenMP::sync_barrier_all();
}

//====================================================================
void Fopr_Wilson::Fopr_Wilson_impl::mult_tm_dirac(Field& w, const Field& f)
{
  double *v2 = w.ptr(0);
  double *v1 = const_cast<Field *>(&f)->ptr(0);

  int nth = ThreadManager_OpenMP::get_num_threads();
  int ith = ThreadManager_OpenMP::get_thread_id();

  int is = m_Ntask * ith / nth;
  int ns = m_Ntask * (ith + 1) / nth - is;

#pragma omp barrier

  for (int i = is; i < is + ns; ++i) {
    mult_tm1_dirac_thread(i, vcp1_tm, v1);
  }
  #pragma omp barrier

  #pragma omp master
  {
    int Nv = m_Nvc * 2 * m_Nx * m_Ny * m_Nz;
    Communicator::exchange(Nv, vcp2_tm, vcp1_tm, 3, -1, 8);
  }
  #pragma omp barrier

  for (int i = is; i < is + ns; ++i) {
    mult_tmb_dirac_thread(i, v2, v1);
  }

  for (int i = is; i < is + ns; ++i) {
    mult_tm2_dirac_thread(i, v2, vcp2_tm);
  }

  ThreadManager_OpenMP::sync_barrier_all();
}

//====================================================================
void Fopr_Wilson::Fopr_Wilson_impl::mult_tp_chiral(Field& w, const Field& f)
{
  double *v1 = const_cast<Field *>(&f)->ptr(0);
  double *v2 = w.ptr(0);

  int nth = ThreadManager_OpenMP::get_num_threads();
  int ith = ThreadManager_OpenMP::get_thread_id();

  int is = m_Ntask * ith / nth;
  int ns = m_Ntask * (ith + 1) / nth - is;

#pragma omp barrier

  for (int i = is; i < is + ns; ++i) {
    mult_tp1_chiral_thread(i, vcp1_tp, v1);
  }
  #pragma omp barrier

  #pragma omp master
  {
    int Nv = m_Nvc * 2 * m_Nx * m_Ny * m_Nz;
    Communicator::exchange(Nv, vcp2_tp, vcp1_tp, 3, 1, 7);
  }
  #pragma omp barrier

  for (int i = is; i < is + ns; ++i) {
    mult_tpb_chiral_thread(i, v2, v1);
  }

  for (int i = is; i < is + ns; ++i) {
    mult_tp2_chiral_thread(i, v2, vcp2_tp);
  }

  ThreadManager_OpenMP::sync_barrier_all();
}

//====================================================================
void Fopr_Wilson::Fopr_Wilson_impl::mult_tm_chiral(Field& w, const Field& f)
{
  double *v2 = w.ptr(0);
  double *v1 = const_cast<Field *>(&f)->ptr(0);

  int nth = ThreadManager_OpenMP::get_num_threads();
  int ith = ThreadManager_OpenMP::get_thread_id();

  int is = m_Ntask * ith / nth;
  int ns = m_Ntask * (ith + 1) / nth - is;

#pragma omp barrier

  for (int i = is; i < is + ns; ++i) {
    mult_tm1_chiral_thread(i, vcp1_tm, v1);
  }
  #pragma omp barrier

  #pragma omp master
  {
    int Nv = m_Nvc * 2 * m_Nx * m_Ny * m_Nz;
    Communicator::exchange(Nv, vcp2_tm, vcp1_tm, 3, -1, 8);
  }
  #pragma omp barrier

  for (int i = is; i < is + ns; ++i) {
    mult_tmb_chiral_thread(i, v2, v1);
  }

  for (int i = is; i < is + ns; ++i) {
    mult_tm2_chiral_thread(i, v2, vcp2_tm);
  }

  ThreadManager_OpenMP::sync_barrier_all();
}

//====================================================================
//============================================================END=====