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Dont instantiate in header
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Peter Boyle
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Grid/qcd/action/fermion/implementation/WilsonFermion.h
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591
Grid/qcd/action/fermion/implementation/WilsonFermion.h
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/*************************************************************************************
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Grid physics library, www.github.com/paboyle/Grid
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Source file: ./lib/qcd/action/fermion/WilsonFermion.cc
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Copyright (C) 2015
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Author: Peter Boyle <pabobyle@ph.ed.ac.uk>
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Author: Peter Boyle <paboyle@ph.ed.ac.uk>
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Author: Peter Boyle <peterboyle@Peters-MacBook-Pro-2.local>
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Author: paboyle <paboyle@ph.ed.ac.uk>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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See the full license in the file "LICENSE" in the top level distribution
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directory
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*************************************************************************************/
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/* END LEGAL */
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#include <Grid/qcd/action/fermion/FermionCore.h>
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#include <Grid/qcd/action/fermion/WilsonFermion.h>
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NAMESPACE_BEGIN(Grid);
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const std::vector<int> WilsonFermionStatic::directions({0, 1, 2, 3, 0, 1, 2, 3});
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const std::vector<int> WilsonFermionStatic::displacements({1, 1, 1, 1, -1, -1, -1, -1});
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int WilsonFermionStatic::HandOptDslash;
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/////////////////////////////////
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// Constructor and gauge import
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/////////////////////////////////
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template <class Impl>
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WilsonFermion<Impl>::WilsonFermion(GaugeField &_Umu, GridCartesian &Fgrid,
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GridRedBlackCartesian &Hgrid, RealD _mass,
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const ImplParams &p,
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const WilsonAnisotropyCoefficients &anis)
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:
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Kernels(p),
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_grid(&Fgrid),
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_cbgrid(&Hgrid),
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Stencil(&Fgrid, npoint, Even, directions, displacements,p),
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StencilEven(&Hgrid, npoint, Even, directions,displacements,p), // source is Even
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StencilOdd(&Hgrid, npoint, Odd, directions,displacements,p), // source is Odd
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mass(_mass),
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Lebesgue(_grid),
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LebesgueEvenOdd(_cbgrid),
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Umu(&Fgrid),
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UmuEven(&Hgrid),
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UmuOdd(&Hgrid),
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_tmp(&Hgrid),
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anisotropyCoeff(anis)
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{
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// Allocate the required comms buffer
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ImportGauge(_Umu);
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if (anisotropyCoeff.isAnisotropic){
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diag_mass = mass + 1.0 + (Nd-1)*(anisotropyCoeff.nu / anisotropyCoeff.xi_0);
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} else {
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diag_mass = 4.0 + mass;
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}
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}
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template <class Impl>
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void WilsonFermion<Impl>::ImportGauge(const GaugeField &_Umu)
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{
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GaugeField HUmu(_Umu.Grid());
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//Here multiply the anisotropy coefficients
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if (anisotropyCoeff.isAnisotropic)
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{
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for (int mu = 0; mu < Nd; mu++)
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{
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GaugeLinkField U_dir = (-0.5)*PeekIndex<LorentzIndex>(_Umu, mu);
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if (mu != anisotropyCoeff.t_direction)
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U_dir *= (anisotropyCoeff.nu / anisotropyCoeff.xi_0);
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PokeIndex<LorentzIndex>(HUmu, U_dir, mu);
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}
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}
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else
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{
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HUmu = _Umu * (-0.5);
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}
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Impl::DoubleStore(GaugeGrid(), Umu, HUmu);
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pickCheckerboard(Even, UmuEven, Umu);
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pickCheckerboard(Odd, UmuOdd, Umu);
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}
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/////////////////////////////
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// Implement the interface
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/////////////////////////////
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template <class Impl>
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RealD WilsonFermion<Impl>::M(const FermionField &in, FermionField &out) {
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out.Checkerboard() = in.Checkerboard();
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Dhop(in, out, DaggerNo);
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return axpy_norm(out, diag_mass, in, out);
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}
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template <class Impl>
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RealD WilsonFermion<Impl>::Mdag(const FermionField &in, FermionField &out) {
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out.Checkerboard() = in.Checkerboard();
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Dhop(in, out, DaggerYes);
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return axpy_norm(out, diag_mass, in, out);
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}
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template <class Impl>
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void WilsonFermion<Impl>::Meooe(const FermionField &in, FermionField &out) {
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if (in.Checkerboard() == Odd) {
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DhopEO(in, out, DaggerNo);
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} else {
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DhopOE(in, out, DaggerNo);
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}
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}
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template <class Impl>
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void WilsonFermion<Impl>::MeooeDag(const FermionField &in, FermionField &out) {
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if (in.Checkerboard() == Odd) {
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DhopEO(in, out, DaggerYes);
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} else {
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DhopOE(in, out, DaggerYes);
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}
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}
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template <class Impl>
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void WilsonFermion<Impl>::Mooee(const FermionField &in, FermionField &out) {
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out.Checkerboard() = in.Checkerboard();
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typename FermionField::scalar_type scal(diag_mass);
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out = scal * in;
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}
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template <class Impl>
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void WilsonFermion<Impl>::MooeeDag(const FermionField &in, FermionField &out) {
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out.Checkerboard() = in.Checkerboard();
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Mooee(in, out);
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}
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template<class Impl>
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void WilsonFermion<Impl>::MooeeInv(const FermionField &in, FermionField &out) {
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out.Checkerboard() = in.Checkerboard();
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out = (1.0/(diag_mass))*in;
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}
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template<class Impl>
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void WilsonFermion<Impl>::MooeeInvDag(const FermionField &in, FermionField &out) {
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out.Checkerboard() = in.Checkerboard();
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MooeeInv(in,out);
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}
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template<class Impl>
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void WilsonFermion<Impl>::MomentumSpacePropagator(FermionField &out, const FermionField &in,RealD _m,std::vector<double> twist)
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{
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typedef typename FermionField::vector_type vector_type;
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typedef typename FermionField::scalar_type ScalComplex;
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typedef Lattice<iSinglet<vector_type> > LatComplex;
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// what type LatticeComplex
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conformable(_grid,out.Grid());
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Gamma::Algebra Gmu [] = {
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Gamma::Algebra::GammaX,
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Gamma::Algebra::GammaY,
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Gamma::Algebra::GammaZ,
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Gamma::Algebra::GammaT
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};
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Coordinate latt_size = _grid->_fdimensions;
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FermionField num (_grid); num = Zero();
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LatComplex wilson(_grid); wilson= Zero();
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LatComplex one (_grid); one = ScalComplex(1.0,0.0);
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LatComplex denom(_grid); denom= Zero();
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LatComplex kmu(_grid);
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ScalComplex ci(0.0,1.0);
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// momphase = n * 2pi / L
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for(int mu=0;mu<Nd;mu++) {
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LatticeCoordinate(kmu,mu);
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RealD TwoPiL = M_PI * 2.0/ latt_size[mu];
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kmu = TwoPiL * kmu;
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kmu = kmu + TwoPiL * one * twist[mu];//momentum for twisted boundary conditions
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wilson = wilson + 2.0*sin(kmu*0.5)*sin(kmu*0.5); // Wilson term
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num = num - sin(kmu)*ci*(Gamma(Gmu[mu])*in); // derivative term
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denom=denom + sin(kmu)*sin(kmu);
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}
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wilson = wilson + _m; // 2 sin^2 k/2 + m
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num = num + wilson*in; // -i gmu sin k + 2 sin^2 k/2 + m
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denom= denom+wilson*wilson; // sin^2 k + (2 sin^2 k/2 + m)^2
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denom= one/denom;
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out = num*denom; // [ -i gmu sin k + 2 sin^2 k/2 + m] / [ sin^2 k + (2 sin^2 k/2 + m)^2 ]
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}
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///////////////////////////////////
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// Internal
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///////////////////////////////////
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template <class Impl>
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void WilsonFermion<Impl>::DerivInternal(StencilImpl &st, DoubledGaugeField &U,
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GaugeField &mat, const FermionField &A,
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const FermionField &B, int dag) {
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assert((dag == DaggerNo) || (dag == DaggerYes));
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Compressor compressor(dag);
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FermionField Btilde(B.Grid());
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FermionField Atilde(B.Grid());
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Atilde = A;
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st.HaloExchange(B, compressor);
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for (int mu = 0; mu < Nd; mu++) {
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////////////////////////////////////////////////////////////////////////
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// Flip gamma (1+g)<->(1-g) if dag
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////////////////////////////////////////////////////////////////////////
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int gamma = mu;
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if (!dag) gamma += Nd;
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////////////////////////
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// Call the single hop
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////////////////////////
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auto U_v = U.View();
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auto B_v = B.View();
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auto Btilde_v = Btilde.View();
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auto st_v = st.View();
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thread_loop( (int sss = 0; sss < B.Grid()->oSites(); sss++) ,{
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Kernels::DhopDirK(st_v, U_v, st.CommBuf(), sss, sss, B_v, Btilde_v, mu, gamma);
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});
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//////////////////////////////////////////////////
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// spin trace outer product
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//////////////////////////////////////////////////
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Impl::InsertForce4D(mat, Btilde, Atilde, mu);
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}
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}
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template <class Impl>
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void WilsonFermion<Impl>::DhopDeriv(GaugeField &mat, const FermionField &U, const FermionField &V, int dag) {
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conformable(U.Grid(), _grid);
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conformable(U.Grid(), V.Grid());
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conformable(U.Grid(), mat.Grid());
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mat.Checkerboard() = U.Checkerboard();
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DerivInternal(Stencil, Umu, mat, U, V, dag);
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}
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template <class Impl>
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void WilsonFermion<Impl>::DhopDerivOE(GaugeField &mat, const FermionField &U, const FermionField &V, int dag) {
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conformable(U.Grid(), _cbgrid);
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conformable(U.Grid(), V.Grid());
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//conformable(U.Grid(), mat.Grid()); not general, leaving as a comment (Guido)
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// Motivation: look at the SchurDiff operator
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assert(V.Checkerboard() == Even);
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assert(U.Checkerboard() == Odd);
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mat.Checkerboard() = Odd;
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DerivInternal(StencilEven, UmuOdd, mat, U, V, dag);
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}
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template <class Impl>
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void WilsonFermion<Impl>::DhopDerivEO(GaugeField &mat, const FermionField &U, const FermionField &V, int dag) {
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conformable(U.Grid(), _cbgrid);
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conformable(U.Grid(), V.Grid());
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//conformable(U.Grid(), mat.Grid());
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assert(V.Checkerboard() == Odd);
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assert(U.Checkerboard() == Even);
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mat.Checkerboard() = Even;
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DerivInternal(StencilOdd, UmuEven, mat, U, V, dag);
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}
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template <class Impl>
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void WilsonFermion<Impl>::Dhop(const FermionField &in, FermionField &out, int dag) {
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conformable(in.Grid(), _grid); // verifies full grid
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conformable(in.Grid(), out.Grid());
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out.Checkerboard() = in.Checkerboard();
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DhopInternal(Stencil, Lebesgue, Umu, in, out, dag);
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}
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template <class Impl>
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void WilsonFermion<Impl>::DhopOE(const FermionField &in, FermionField &out, int dag) {
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conformable(in.Grid(), _cbgrid); // verifies half grid
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conformable(in.Grid(), out.Grid()); // drops the cb check
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assert(in.Checkerboard() == Even);
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out.Checkerboard() = Odd;
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DhopInternal(StencilEven, LebesgueEvenOdd, UmuOdd, in, out, dag);
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}
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template <class Impl>
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void WilsonFermion<Impl>::DhopEO(const FermionField &in, FermionField &out,int dag) {
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conformable(in.Grid(), _cbgrid); // verifies half grid
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conformable(in.Grid(), out.Grid()); // drops the cb check
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assert(in.Checkerboard() == Odd);
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out.Checkerboard() = Even;
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DhopInternal(StencilOdd, LebesgueEvenOdd, UmuEven, in, out, dag);
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}
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template <class Impl>
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void WilsonFermion<Impl>::Mdir(const FermionField &in, FermionField &out, int dir, int disp) {
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DhopDir(in, out, dir, disp);
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}
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template <class Impl>
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void WilsonFermion<Impl>::DhopDir(const FermionField &in, FermionField &out, int dir, int disp) {
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int skip = (disp == 1) ? 0 : 1;
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int dirdisp = dir + skip * 4;
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int gamma = dir + (1 - skip) * 4;
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DhopDirDisp(in, out, dirdisp, gamma, DaggerNo);
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};
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template <class Impl>
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void WilsonFermion<Impl>::DhopDirDisp(const FermionField &in, FermionField &out,int dirdisp, int gamma, int dag)
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{
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Compressor compressor(dag);
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Stencil.HaloExchange(in, compressor);
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auto in_v = in.View();
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auto out_v = in.View();
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auto Umu_v = Umu.View();
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auto Stencil_v = Stencil.View();
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thread_loop( (int sss = 0; sss < in.Grid()->oSites(); sss++) ,{
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Kernels::DhopDirK(Stencil_v, Umu_v, Stencil.CommBuf(), sss, sss, in_v, out_v, dirdisp, gamma);
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});
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};
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template <class Impl>
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void WilsonFermion<Impl>::DhopInternal(StencilImpl &st, LebesgueOrder &lo,
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DoubledGaugeField &U,
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const FermionField &in,
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FermionField &out, int dag) {
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#ifdef GRID_OMP
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if ( WilsonKernelsStatic::Comms == WilsonKernelsStatic::CommsAndCompute )
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DhopInternalOverlappedComms(st,lo,U,in,out,dag);
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else
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#endif
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DhopInternalSerial(st,lo,U,in,out,dag);
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}
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template <class Impl>
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void WilsonFermion<Impl>::DhopInternalOverlappedComms(StencilImpl &st, LebesgueOrder &lo,
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DoubledGaugeField &U,
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const FermionField &in,
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FermionField &out, int dag) {
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assert((dag == DaggerNo) || (dag == DaggerYes));
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#ifdef GRID_OMP
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Compressor compressor(dag);
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int len = U.Grid()->oSites();
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const int LLs = 1;
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st.Prepare();
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st.HaloGather(in,compressor);
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st.CommsMergeSHM(compressor);
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#pragma omp parallel
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{
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int tid = omp_get_thread_num();
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int nthreads = omp_get_num_threads();
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int ncomms = CartesianCommunicator::nCommThreads;
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if (ncomms == -1) ncomms = 1;
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assert(nthreads > ncomms);
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if (tid >= ncomms) {
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nthreads -= ncomms;
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int ttid = tid - ncomms;
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int n = len;
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int chunk = n / nthreads;
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int rem = n % nthreads;
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int myblock, myn;
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if (ttid < rem) {
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myblock = ttid * chunk + ttid;
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myn = chunk+1;
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} else {
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myblock = ttid*chunk + rem;
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myn = chunk;
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}
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// do the compute
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auto U_v = U.View();
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auto in_v = in.View();
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auto out_v = out.View();
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auto st_v = st.View();
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int Opt = WilsonKernelsStatic::Opt;
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if (dag == DaggerYes) {
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for (int sss = myblock; sss < myblock+myn; ++sss) {
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Kernels::DhopSiteDag(Opt,st_v,U_v,st.CommBuf(),sss,sss,1,1,in_v,out_v,1,0);
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// Kernels::DhopSiteDag(st_v, lo, U_v, st.CommBuf(), sss, sss, 1, 1, in_v, out_v);
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}
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} else {
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for (int sss = myblock; sss < myblock+myn; ++sss) {
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Kernels::DhopSite(Opt,st_v,U_v,st.CommBuf(),sss,sss,1,1,in_v,out_v,1,0);
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// Kernels::DhopSite(st_v, lo, U_v, st.CommBuf(), sss, sss, 1, 1, in_v, out_v);
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}
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}
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} else {
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st.CommunicateThreaded();
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}
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} //pragma
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{
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auto U_v = U.View();
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auto in_v = in.View();
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auto out_v = out.View();
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auto st_v = st.View();
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int Opt = WilsonKernelsStatic::Opt;
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if (dag == DaggerYes) {
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thread_loop( (int sss = 0; sss < in.Grid()->oSites(); sss++) ,{
|
||||
Kernels::DhopSiteDag(Opt,st_v,U_v,st.CommBuf(),sss,sss,1,1,in_v,out_v,0,1);
|
||||
});
|
||||
} else {
|
||||
thread_loop( (int sss = 0; sss < in.Grid()->oSites(); sss++) ,{
|
||||
Kernels::DhopSite(Opt,st_v,U_v,st.CommBuf(),sss,sss,1,1,in_v,out_v,0,1);
|
||||
});
|
||||
}
|
||||
}
|
||||
#else
|
||||
assert(0);
|
||||
#endif
|
||||
};
|
||||
|
||||
|
||||
template <class Impl>
|
||||
void WilsonFermion<Impl>::DhopInternalSerial(StencilImpl &st, LebesgueOrder &lo,
|
||||
DoubledGaugeField &U,
|
||||
const FermionField &in,
|
||||
FermionField &out, int dag) {
|
||||
assert((dag == DaggerNo) || (dag == DaggerYes));
|
||||
Compressor compressor(dag);
|
||||
st.HaloExchange(in, compressor);
|
||||
|
||||
int Opt = WilsonKernelsStatic::Opt;
|
||||
auto U_v = U.View();
|
||||
auto in_v = in.View();
|
||||
auto out_v= out.View();
|
||||
auto st_v = st.View();
|
||||
if (dag == DaggerYes) {
|
||||
accelerator_loop( sss,in_v, {
|
||||
Kernels::DhopSiteDag(Opt,st_v, U_v, st.CommBuf(), sss, sss, 1, 1, in_v, out_v);
|
||||
});
|
||||
} else {
|
||||
accelerator_loop( sss,in_v, {
|
||||
Kernels::DhopSite(Opt,st_v, U_v, st.CommBuf(), sss, sss, 1, 1, in_v, out_v);
|
||||
});
|
||||
}
|
||||
};
|
||||
/*Change ends */
|
||||
|
||||
/*******************************************************************************
|
||||
* Conserved current utilities for Wilson fermions, for contracting propagators
|
||||
* to make a conserved current sink or inserting the conserved current
|
||||
* sequentially.
|
||||
******************************************************************************/
|
||||
template <class Impl>
|
||||
void WilsonFermion<Impl>::ContractConservedCurrent(PropagatorField &q_in_1,
|
||||
PropagatorField &q_in_2,
|
||||
PropagatorField &q_out,
|
||||
Current curr_type,
|
||||
unsigned int mu)
|
||||
{
|
||||
Gamma g5(Gamma::Algebra::Gamma5);
|
||||
conformable(_grid, q_in_1.Grid());
|
||||
conformable(_grid, q_in_2.Grid());
|
||||
conformable(_grid, q_out.Grid());
|
||||
PropagatorField tmp1(_grid), tmp2(_grid);
|
||||
q_out = Zero();
|
||||
|
||||
// Forward, need q1(x + mu), q2(x). Backward, need q1(x), q2(x + mu).
|
||||
// Inefficient comms method but not performance critical.
|
||||
tmp1 = Cshift(q_in_1, mu, 1);
|
||||
tmp2 = Cshift(q_in_2, mu, 1);
|
||||
auto tmp1_v = tmp1.View();
|
||||
auto tmp2_v = tmp2.View();
|
||||
auto q_in_1_v=q_in_1.View();
|
||||
auto q_in_2_v=q_in_2.View();
|
||||
auto q_out_v = q_out.View();
|
||||
auto Umu_v = Umu.View();
|
||||
thread_loop( (unsigned int sU = 0; sU < Umu.Grid()->oSites(); ++sU), {
|
||||
Kernels::ContractConservedCurrentSiteFwd(tmp1_v[sU],
|
||||
q_in_2_v[sU],
|
||||
q_out_v[sU],
|
||||
Umu_v, sU, mu);
|
||||
Kernels::ContractConservedCurrentSiteBwd(q_in_1_v[sU],
|
||||
tmp2_v[sU],
|
||||
q_out_v[sU],
|
||||
Umu_v, sU, mu);
|
||||
});
|
||||
}
|
||||
|
||||
|
||||
template <class Impl>
|
||||
void WilsonFermion<Impl>::SeqConservedCurrent(PropagatorField &q_in,
|
||||
PropagatorField &q_out,
|
||||
Current curr_type,
|
||||
unsigned int mu,
|
||||
unsigned int tmin,
|
||||
unsigned int tmax,
|
||||
ComplexField &lattice_cmplx)
|
||||
{
|
||||
conformable(_grid, q_in.Grid());
|
||||
conformable(_grid, q_out.Grid());
|
||||
|
||||
// Lattice<iSinglet<Simd>> ph(_grid), coor(_grid);
|
||||
Complex i(0.0,1.0);
|
||||
PropagatorField tmpFwd(_grid), tmpBwd(_grid), tmp(_grid);
|
||||
unsigned int tshift = (mu == Tp) ? 1 : 0;
|
||||
unsigned int LLt = GridDefaultLatt()[Tp];
|
||||
|
||||
q_out = Zero();
|
||||
LatticeInteger coords(_grid);
|
||||
LatticeCoordinate(coords, Tp);
|
||||
|
||||
// Need q(x + mu) and q(x - mu).
|
||||
tmp = Cshift(q_in, mu, 1);
|
||||
tmpFwd = tmp*lattice_cmplx;
|
||||
tmp = lattice_cmplx*q_in;
|
||||
tmpBwd = Cshift(tmp, mu, -1);
|
||||
|
||||
auto coords_v = coords.View();
|
||||
auto tmpFwd_v = tmpFwd.View();
|
||||
auto tmpBwd_v = tmpBwd.View();
|
||||
auto Umu_v = Umu.View();
|
||||
auto q_out_v = q_out.View();
|
||||
|
||||
thread_loop( (unsigned int sU = 0; sU < Umu.Grid()->oSites(); ++sU), {
|
||||
|
||||
// Compute the sequential conserved current insertion only if our simd
|
||||
// object contains a timeslice we need.
|
||||
vInteger t_mask = ((coords_v[sU] >= tmin) &&
|
||||
(coords_v[sU] <= tmax));
|
||||
Integer timeSlices = Reduce(t_mask);
|
||||
|
||||
if (timeSlices > 0) {
|
||||
Kernels::SeqConservedCurrentSiteFwd(tmpFwd_v[sU],
|
||||
q_out_v[sU],
|
||||
Umu_v, sU, mu, t_mask);
|
||||
}
|
||||
|
||||
// Repeat for backward direction.
|
||||
t_mask = ((coords_v[sU] >= (tmin + tshift)) &&
|
||||
(coords_v[sU] <= (tmax + tshift)));
|
||||
|
||||
//if tmax = LLt-1 (last timeslice) include timeslice 0 if the time is shifted (mu=3)
|
||||
unsigned int t0 = 0;
|
||||
if((tmax==LLt-1) && (tshift==1)) t_mask = (t_mask || (coords_v[sU] == t0 ));
|
||||
|
||||
timeSlices = Reduce(t_mask);
|
||||
|
||||
if (timeSlices > 0) {
|
||||
Kernels::SeqConservedCurrentSiteBwd(tmpBwd_v[sU],
|
||||
q_out_v[sU],
|
||||
Umu_v, sU, mu, t_mask);
|
||||
}
|
||||
});
|
||||
}
|
||||
|
||||
NAMESPACE_END(Grid);
|
||||
Loading…
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Reference in New Issue
Block a user