mirror of
https://github.com/paboyle/Grid.git
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164 lines
6.4 KiB
C++
164 lines
6.4 KiB
C++
/*************************************************************************************
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Grid physics library, www.github.com/paboyle/Grid
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Source file: ./lib/qcd/action/fermion/WilsonFermion.h
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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: 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 directory
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*************************************************************************************/
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/* END LEGAL */
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#ifndef GRID_QCD_WILSON_FERMION_H
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#define GRID_QCD_WILSON_FERMION_H
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namespace Grid {
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namespace QCD {
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class WilsonFermionStatic {
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public:
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static int HandOptDslash; // these are a temporary hack
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static int MortonOrder;
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static const std::vector<int> directions ;
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static const std::vector<int> displacements;
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static const int npoint=8;
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};
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template<class Impl>
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class WilsonFermion : public WilsonKernels<Impl>, public WilsonFermionStatic
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{
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public:
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INHERIT_IMPL_TYPES(Impl);
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typedef WilsonKernels<Impl> Kernels;
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///////////////////////////////////////////////////////////////
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// Implement the abstract base
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///////////////////////////////////////////////////////////////
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GridBase *GaugeGrid(void) { return _grid ;}
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GridBase *GaugeRedBlackGrid(void) { return _cbgrid ;}
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GridBase *FermionGrid(void) { return _grid;}
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GridBase *FermionRedBlackGrid(void) { return _cbgrid;}
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//////////////////////////////////////////////////////////////////
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// override multiply; cut number routines if pass dagger argument
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// and also make interface more uniformly consistent
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//////////////////////////////////////////////////////////////////
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RealD M(const FermionField &in, FermionField &out);
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RealD Mdag(const FermionField &in, FermionField &out);
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/////////////////////////////////////////////////////////
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// half checkerboard operations
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// could remain virtual so we can derive Clover from Wilson base
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/////////////////////////////////////////////////////////
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void Meooe(const FermionField &in, FermionField &out) ;
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void MeooeDag(const FermionField &in, FermionField &out) ;
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// allow override for twisted mass and clover
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virtual void Mooee(const FermionField &in, FermionField &out) ;
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virtual void MooeeDag(const FermionField &in, FermionField &out) ;
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virtual void MooeeInv(const FermionField &in, FermionField &out) ;
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virtual void MooeeInvDag(const FermionField &in, FermionField &out) ;
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////////////////////////
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// Derivative interface
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////////////////////////
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// Interface calls an internal routine
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void DhopDeriv(GaugeField &mat,const FermionField &U,const FermionField &V,int dag);
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void DhopDerivOE(GaugeField &mat,const FermionField &U,const FermionField &V,int dag);
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void DhopDerivEO(GaugeField &mat,const FermionField &U,const FermionField &V,int dag);
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///////////////////////////////////////////////////////////////
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// non-hermitian hopping term; half cb or both
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///////////////////////////////////////////////////////////////
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void Dhop(const FermionField &in, FermionField &out,int dag) ;
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void DhopOE(const FermionField &in, FermionField &out,int dag) ;
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void DhopEO(const FermionField &in, FermionField &out,int dag) ;
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///////////////////////////////////////////////////////////////
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// Multigrid assistance; force term uses too
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///////////////////////////////////////////////////////////////
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void Mdir (const FermionField &in, FermionField &out,int dir,int disp) ;
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void DhopDir(const FermionField &in, FermionField &out,int dir,int disp);
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void DhopDirDisp(const FermionField &in, FermionField &out,int dirdisp,int gamma,int dag) ;
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///////////////////////////////////////////////////////////////
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// Extra methods added by derived
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///////////////////////////////////////////////////////////////
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void DerivInternal(StencilImpl & st,
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DoubledGaugeField & U,
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GaugeField &mat,
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const FermionField &A,
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const FermionField &B,
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int dag);
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void DhopInternal(StencilImpl & st,DoubledGaugeField & U,
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const FermionField &in, FermionField &out,int dag) ;
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void DhopInternalCommsThenCompute(StencilImpl & st,DoubledGaugeField & U,
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const FermionField &in, FermionField &out,int dag) ;
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void DhopInternalCommsOverlapCompute(StencilImpl & st,DoubledGaugeField & U,
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const FermionField &in, FermionField &out,int dag) ;
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// Constructor
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WilsonFermion(GaugeField &_Umu,
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GridCartesian &Fgrid,
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GridRedBlackCartesian &Hgrid,
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RealD _mass,
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const ImplParams &p= ImplParams()
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) ;
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// DoubleStore impl dependent
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void ImportGauge(const GaugeField &_Umu);
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///////////////////////////////////////////////////////////////
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// Data members require to support the functionality
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///////////////////////////////////////////////////////////////
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// protected:
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public:
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RealD mass;
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GridBase * _grid;
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GridBase * _cbgrid;
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//Defines the stencils for even and odd
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StencilImpl Stencil;
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StencilImpl StencilEven;
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StencilImpl StencilOdd;
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// Copy of the gauge field , with even and odd subsets
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DoubledGaugeField Umu;
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DoubledGaugeField UmuEven;
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DoubledGaugeField UmuOdd;
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};
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typedef WilsonFermion<WilsonImplF> WilsonFermionF;
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typedef WilsonFermion<WilsonImplD> WilsonFermionD;
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}
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}
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#endif
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