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Grid/lib/qcd/action/fermion/FermionOperatorImpl.h

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/*************************************************************************************
Grid physics library, www.github.com/paboyle/Grid
Source file: ./lib/qcd/action/fermion/FermionOperatorImpl.h
Copyright (C) 2015
Author: Peter Boyle <pabobyle@ph.ed.ac.uk>
Author: Peter Boyle <paboyle@ph.ed.ac.uk>
Author: Peter Boyle <peterboyle@Peters-MacBook-Pro-2.local>
Author: paboyle <paboyle@ph.ed.ac.uk>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
See the full license in the file "LICENSE" in the top level distribution
directory
*************************************************************************************/
/* END LEGAL */
#ifndef GRID_QCD_FERMION_OPERATOR_IMPL_H
#define GRID_QCD_FERMION_OPERATOR_IMPL_H
NAMESPACE_BEGIN(Grid);
//////////////////////////////////////////////
// Template parameter class constructs to package
// externally control Fermion implementations
// in orthogonal directions
//
// Ultimately need Impl to always define types where XXX is opaque
//
// typedef typename XXX Simd;
// typedef typename XXX GaugeLinkField;
// typedef typename XXX GaugeField;
// typedef typename XXX GaugeActField;
// typedef typename XXX FermionField;
// typedef typename XXX PropagatorField;
// typedef typename XXX DoubledGaugeField;
// typedef typename XXX SiteSpinor;
// typedef typename XXX SitePropagator;
// typedef typename XXX SiteHalfSpinor;
// typedef typename XXX Compressor;
//
// and Methods:
// void ImportGauge(GridBase *GaugeGrid,DoubledGaugeField &Uds,const GaugeField &Umu)
// void DoubleStore(GridBase *GaugeGrid,DoubledGaugeField &Uds,const GaugeField &Umu)
// void multLink(SiteHalfSpinor &phi,const SiteDoubledGaugeField &U,const SiteHalfSpinor &chi,int mu,StencilEntry *SE,StencilImpl::View_type &St)
// void InsertForce4D(GaugeField &mat,const FermionField &Btilde,const FermionField &A,int mu)
// void InsertForce5D(GaugeField &mat,const FermionField &Btilde,const FermionField &A,int mu)
//
//
// To acquire the typedefs from "Base" (either a base class or template param) use:
//
// INHERIT_GIMPL_TYPES(Base)
// INHERIT_FIMPL_TYPES(Base)
// INHERIT_IMPL_TYPES(Base)
//
// The Fermion operators will do the following:
//
// struct MyOpParams {
// RealD mass;
// };
//
//
// template<class Impl>
// class MyOp : public<Impl> {
// public:
//
// INHERIT_ALL_IMPL_TYPES(Impl);
//
// MyOp(MyOpParams Myparm, ImplParams &ImplParam) : Impl(ImplParam)
// {
//
// };
//
// }
//////////////////////////////////////////////
template <class T> struct SamePrecisionMapper {
typedef T HigherPrecVector ;
typedef T LowerPrecVector ;
};
template <class T> struct LowerPrecisionMapper { };
template <> struct LowerPrecisionMapper<vRealF> {
typedef vRealF HigherPrecVector ;
typedef vRealH LowerPrecVector ;
};
template <> struct LowerPrecisionMapper<vRealD> {
typedef vRealD HigherPrecVector ;
typedef vRealF LowerPrecVector ;
};
template <> struct LowerPrecisionMapper<vComplexF> {
typedef vComplexF HigherPrecVector ;
typedef vComplexH LowerPrecVector ;
};
template <> struct LowerPrecisionMapper<vComplexD> {
typedef vComplexD HigherPrecVector ;
typedef vComplexF LowerPrecVector ;
};
struct CoeffReal {
public:
typedef RealD _Coeff_t;
static const int Nhcs = 2;
template<class Simd> using PrecisionMapper = SamePrecisionMapper<Simd>;
};
struct CoeffRealHalfComms {
public:
typedef RealD _Coeff_t;
static const int Nhcs = 1;
template<class Simd> using PrecisionMapper = LowerPrecisionMapper<Simd>;
};
struct CoeffComplex {
public:
typedef ComplexD _Coeff_t;
static const int Nhcs = 2;
template<class Simd> using PrecisionMapper = SamePrecisionMapper<Simd>;
};
struct CoeffComplexHalfComms {
public:
typedef ComplexD _Coeff_t;
static const int Nhcs = 1;
template<class Simd> using PrecisionMapper = LowerPrecisionMapper<Simd>;
};
////////////////////////////////////////////////////////////////////////
// Implementation dependent fermion types
////////////////////////////////////////////////////////////////////////
#define INHERIT_FIMPL_TYPES(Impl)\
typedef typename Impl::Coeff_t Coeff_t; \
typedef typename Impl::FermionField FermionField; \
typedef typename Impl::PropagatorField PropagatorField; \
typedef typename Impl::DoubledGaugeField DoubledGaugeField; \
typedef typename Impl::SiteSpinor SiteSpinor; \
typedef typename Impl::SitePropagator SitePropagator; \
typedef typename Impl::SiteHalfSpinor SiteHalfSpinor; \
typedef typename Impl::Compressor Compressor; \
typedef typename Impl::StencilImpl StencilImpl; \
typedef typename Impl::ImplParams ImplParams; \
typedef typename Impl::StencilImpl::View_type StencilView; \
typedef typename ViewMap<FermionField>::Type FermionFieldView; \
typedef typename ViewMap<DoubledGaugeField>::Type DoubledGaugeFieldView;
#define INHERIT_IMPL_TYPES(Base) \
INHERIT_GIMPL_TYPES(Base) \
INHERIT_FIMPL_TYPES(Base)
/////////////////////////////////////////////////////////////////////////////
// Single flavour four spinors with colour index
/////////////////////////////////////////////////////////////////////////////
template <class S, class Representation = FundamentalRepresentation,class Options = CoeffReal >
class WilsonImpl : public PeriodicGaugeImpl<GaugeImplTypes<S, Representation::Dimension > > {
public:
static const int Dimension = Representation::Dimension;
static const bool LsVectorised=false;
static const int Nhcs = Options::Nhcs;
typedef PeriodicGaugeImpl<GaugeImplTypes<S, Dimension > > Gimpl;
INHERIT_GIMPL_TYPES(Gimpl);
//Necessary?
constexpr bool is_fundamental() const{return Dimension == Nc ? 1 : 0;}
typedef typename Options::_Coeff_t Coeff_t;
typedef typename Options::template PrecisionMapper<Simd>::LowerPrecVector SimdL;
template <typename vtype> using iImplSpinor = iScalar<iVector<iVector<vtype, Dimension>, Ns> >;
template <typename vtype> using iImplPropagator = iScalar<iMatrix<iMatrix<vtype, Dimension>, Ns> >;
template <typename vtype> using iImplHalfSpinor = iScalar<iVector<iVector<vtype, Dimension>, Nhs> >;
template <typename vtype> using iImplHalfCommSpinor = iScalar<iVector<iVector<vtype, Dimension>, Nhcs> >;
template <typename vtype> using iImplDoubledGaugeField = iVector<iScalar<iMatrix<vtype, Dimension> >, Nds>;
typedef iImplSpinor<Simd> SiteSpinor;
typedef iImplPropagator<Simd> SitePropagator;
typedef iImplHalfSpinor<Simd> SiteHalfSpinor;
typedef iImplHalfCommSpinor<SimdL> SiteHalfCommSpinor;
typedef iImplDoubledGaugeField<Simd> SiteDoubledGaugeField;
typedef Lattice<SiteSpinor> FermionField;
typedef Lattice<SitePropagator> PropagatorField;
typedef Lattice<SiteDoubledGaugeField> DoubledGaugeField;
typedef WilsonCompressor<SiteHalfCommSpinor,SiteHalfSpinor, SiteSpinor> Compressor;
typedef WilsonImplParams ImplParams;
typedef WilsonStencil<SiteSpinor, SiteHalfSpinor> StencilImpl;
typedef typename StencilImpl::View_type StencilView;
ImplParams Params;
WilsonImpl(const ImplParams &p = ImplParams()) : Params(p){
assert(Params.boundary_phases.size() == Nd);
};
static accelerator_inline void multLink(SiteHalfSpinor &phi,
const SiteDoubledGaugeField &U,
const SiteHalfSpinor &chi,
int mu,
StencilEntry *SE,
StencilView &St)
{
mult(&phi(), &U(mu), &chi());
}
static accelerator_inline void multLinkProp(SitePropagator &phi,
const SiteDoubledGaugeField &U,
const SitePropagator &chi,
int mu)
{
mult(&phi(), &U(mu), &chi());
}
template <class ref>
static accelerator_inline void loadLinkElement(Simd &reg, ref &memory)
{
reg = memory;
}
inline void DoubleStore(GridBase *GaugeGrid,
DoubledGaugeField &Uds,
const GaugeField &Umu)
{
typedef typename Simd::scalar_type scalar_type;
conformable(Uds.Grid(), GaugeGrid);
conformable(Umu.Grid(), GaugeGrid);
GaugeLinkField U(GaugeGrid);
GaugeLinkField tmp(GaugeGrid);
Lattice<iScalar<vInteger> > coor(GaugeGrid);
for (int mu = 0; mu < Nd; mu++) {
auto pha = Params.boundary_phases[mu];
scalar_type phase( real(pha),imag(pha) );
int Lmu = GaugeGrid->GlobalDimensions()[mu] - 1;
LatticeCoordinate(coor, mu);
U = PeekIndex<LorentzIndex>(Umu, mu);
tmp = where(coor == Lmu, phase * U, U);
PokeIndex<LorentzIndex>(Uds, tmp, mu);
U = adj(Cshift(U, mu, -1));
U = where(coor == 0, conjugate(phase) * U, U);
PokeIndex<LorentzIndex>(Uds, U, mu + 4);
}
}
inline void InsertForce4D(GaugeField &mat, FermionField &Btilde, FermionField &A,int mu){
GaugeLinkField link(mat.Grid());
link = TraceIndex<SpinIndex>(outerProduct(Btilde,A));
PokeIndex<LorentzIndex>(mat,link,mu);
}
inline void InsertForce5D(GaugeField &mat, FermionField &Btilde, FermionField &Atilde,int mu){
int Ls=Btilde.Grid()->_fdimensions[0];
GaugeLinkField tmp(mat.Grid());
tmp = Zero();
auto tmp_v = tmp.View();
auto Btilde_v = Btilde.View();
auto Atilde_v = Atilde.View();
thread_loop( (int sss=0;sss<tmp.Grid()->oSites();sss++),{
int sU=sss;
for(int s=0;s<Ls;s++){
int sF = s+Ls*sU;
tmp_v[sU] = tmp_v[sU]+ traceIndex<SpinIndex>(outerProduct(Btilde_v[sF],Atilde_v[sF])); // ordering here
}
});
PokeIndex<LorentzIndex>(mat,tmp,mu);
}
};
////////////////////////////////////////////////////////////////////////////////////
// Single flavour four spinors with colour index, 5d redblack
////////////////////////////////////////////////////////////////////////////////////
template<class S,int Nrepresentation=Nc, class Options=CoeffReal>
class DomainWallVec5dImpl : public PeriodicGaugeImpl< GaugeImplTypes< S,Nrepresentation> > {
public:
typedef PeriodicGaugeImpl<GaugeImplTypes<S, Nrepresentation> > Gimpl;
INHERIT_GIMPL_TYPES(Gimpl);
static const int Dimension = Nrepresentation;
static const bool LsVectorised=true;
static const int Nhcs = Options::Nhcs;
typedef typename Options::_Coeff_t Coeff_t;
typedef typename Options::template PrecisionMapper<Simd>::LowerPrecVector SimdL;
template <typename vtype> using iImplSpinor = iScalar<iVector<iVector<vtype, Nrepresentation>, Ns> >;
template <typename vtype> using iImplPropagator = iScalar<iMatrix<iMatrix<vtype, Nrepresentation>, Ns> >;
template <typename vtype> using iImplHalfSpinor = iScalar<iVector<iVector<vtype, Nrepresentation>, Nhs> >;
template <typename vtype> using iImplHalfCommSpinor = iScalar<iVector<iVector<vtype, Nrepresentation>, Nhcs> >;
template <typename vtype> using iImplDoubledGaugeField = iVector<iScalar<iMatrix<vtype, Nrepresentation> >, Nds>;
template <typename vtype> using iImplGaugeField = iVector<iScalar<iMatrix<vtype, Nrepresentation> >, Nd>;
template <typename vtype> using iImplGaugeLink = iScalar<iScalar<iMatrix<vtype, Nrepresentation> > >;
typedef iImplSpinor<Simd> SiteSpinor;
typedef iImplPropagator<Simd> SitePropagator;
typedef iImplHalfSpinor<Simd> SiteHalfSpinor;
typedef iImplHalfCommSpinor<SimdL> SiteHalfCommSpinor;
typedef Lattice<SiteSpinor> FermionField;
typedef Lattice<SitePropagator> PropagatorField;
/////////////////////////////////////////////////
// Make the doubled gauge field a *scalar*
/////////////////////////////////////////////////
typedef iImplDoubledGaugeField<typename Simd::scalar_type> SiteDoubledGaugeField; // This is a scalar
typedef iImplGaugeField<typename Simd::scalar_type> SiteScalarGaugeField; // scalar
typedef iImplGaugeLink<typename Simd::scalar_type> SiteScalarGaugeLink; // scalar
typedef Lattice<SiteDoubledGaugeField> DoubledGaugeField;
typedef WilsonCompressor<SiteHalfCommSpinor,SiteHalfSpinor, SiteSpinor> Compressor;
typedef WilsonImplParams ImplParams;
typedef WilsonStencil<SiteSpinor, SiteHalfSpinor> StencilImpl;
typedef typename StencilImpl::View_type StencilView;
ImplParams Params;
DomainWallVec5dImpl(const ImplParams &p = ImplParams()) : Params(p){};
template <class ref>
static accelerator_inline void loadLinkElement(Simd &reg, ref &memory)
{
vsplat(reg, memory);
}
static accelerator_inline void multLink(SiteHalfSpinor &phi, const SiteDoubledGaugeField &U,
const SiteHalfSpinor &chi, int mu, StencilEntry *SE,
StencilView &St)
{
SiteGaugeLink UU;
for (int i = 0; i < Nrepresentation; i++) {
for (int j = 0; j < Nrepresentation; j++) {
vsplat(UU()()(i, j), U(mu)()(i, j));
}
}
mult(&phi(), &UU(), &chi());
}
static accelerator_inline void multLinkProp(SitePropagator &phi,
const SiteDoubledGaugeField &U,
const SitePropagator &chi,int mu)
{
SiteGaugeLink UU;
for (int i = 0; i < Nrepresentation; i++) {
for (int j = 0; j < Nrepresentation; j++) {
vsplat(UU()()(i, j), U(mu)()(i, j));
}
}
mult(&phi(), &UU(), &chi());
}
inline void DoubleStore(GridBase *GaugeGrid, DoubledGaugeField &Uds,const GaugeField &Umu)
{
SiteScalarGaugeField ScalarUmu;
SiteDoubledGaugeField ScalarUds;
GaugeLinkField U(Umu.Grid());
GaugeField Uadj(Umu.Grid());
for (int mu = 0; mu < Nd; mu++) {
U = PeekIndex<LorentzIndex>(Umu, mu);
U = adj(Cshift(U, mu, -1));
PokeIndex<LorentzIndex>(Uadj, U, mu);
}
for (int lidx = 0; lidx < GaugeGrid->lSites(); lidx++) {
Coordinate lcoor;
GaugeGrid->LocalIndexToLocalCoor(lidx, lcoor);
peekLocalSite(ScalarUmu, Umu, lcoor);
for (int mu = 0; mu < 4; mu++) ScalarUds(mu) = ScalarUmu(mu);
peekLocalSite(ScalarUmu, Uadj, lcoor);
for (int mu = 0; mu < 4; mu++) ScalarUds(mu + 4) = ScalarUmu(mu);
pokeLocalSite(ScalarUds, Uds, lcoor);
}
}
inline void InsertForce4D(GaugeField &mat, FermionField &Btilde,FermionField &A, int mu)
{
assert(0);
}
inline void InsertForce5D(GaugeField &mat, FermionField &Btilde, FermionField &Atilde, int mu) {
assert(0);
// Following lines to be revised after Peter's addition of half prec
// missing put lane...
/*
typedef decltype(traceIndex<SpinIndex>(outerProduct(Btilde[0], Atilde[0]))) result_type;
unsigned int LLs = Btilde.Grid()->_rdimensions[0];
conformable(Atilde.Grid(),Btilde.Grid());
GridBase* grid = mat.Grid();
GridBase* Bgrid = Btilde.Grid();
unsigned int dimU = grid->Nd();
unsigned int dimF = Bgrid->Nd();
GaugeLinkField tmp(grid);
tmp = Zero();
// FIXME
// Current implementation works, thread safe, probably suboptimal
// Passing through the local coordinate for grid transformation
// the force grid is in general very different from the Ls vectorized grid
for (int so = 0; so < grid->oSites(); so++) {
std::vector<typename result_type::scalar_object> vres(Bgrid->Nsimd());
std::vector<int> ocoor; grid->oCoorFromOindex(ocoor,so);
for (int si = 0; si < tmp.Grid()->iSites(); si++){
typename result_type::scalar_object scalar_object; scalar_object = Zero();
std::vector<int> local_coor;
std::vector<int> icoor; grid->iCoorFromIindex(icoor,si);
grid->InOutCoorToLocalCoor(ocoor, icoor, local_coor);
for (int s = 0; s < LLs; s++) {
std::vector<int> slocal_coor(dimF);
slocal_coor[0] = s;
for (int s4d = 1; s4d< dimF; s4d++) slocal_coor[s4d] = local_coor[s4d-1];
int sF = Bgrid->oIndexReduced(slocal_coor);
assert(sF < Bgrid->oSites());
extract(traceIndex<SpinIndex>(outerProduct(Btilde[sF], Atilde[sF])), vres);
// sum across the 5d dimension
for (auto v : vres) scalar_object += v;
}
tmp[so].putlane(scalar_object, si);
}
}
PokeIndex<LorentzIndex>(mat, tmp, mu);
*/
}
};
////////////////////////////////////////////////////////////////////////////////////////
// Flavour doubled spinors; is Gparity the only? what about C*?
////////////////////////////////////////////////////////////////////////////////////////
template <class S, int Nrepresentation, class Options=CoeffReal>
class GparityWilsonImpl : public ConjugateGaugeImpl<GaugeImplTypes<S, Nrepresentation> > {
public:
static const int Dimension = Nrepresentation;
static const int Nhcs = Options::Nhcs;
static const bool LsVectorised=false;
typedef ConjugateGaugeImpl< GaugeImplTypes<S,Nrepresentation> > Gimpl;
INHERIT_GIMPL_TYPES(Gimpl);
typedef typename Options::_Coeff_t Coeff_t;
typedef typename Options::template PrecisionMapper<Simd>::LowerPrecVector SimdL;
template <typename vtype> using iImplSpinor = iVector<iVector<iVector<vtype, Nrepresentation>, Ns>, Ngp>;
template <typename vtype> using iImplPropagator = iVector<iMatrix<iMatrix<vtype, Nrepresentation>, Ns>, Ngp>;
template <typename vtype> using iImplHalfSpinor = iVector<iVector<iVector<vtype, Nrepresentation>, Nhs>, Ngp>;
template <typename vtype> using iImplHalfCommSpinor = iVector<iVector<iVector<vtype, Nrepresentation>, Nhcs>, Ngp>;
template <typename vtype> using iImplDoubledGaugeField = iVector<iVector<iScalar<iMatrix<vtype, Nrepresentation> >, Nds>, Ngp>;
typedef iImplSpinor<Simd> SiteSpinor;
typedef iImplPropagator<Simd> SitePropagator;
typedef iImplHalfSpinor<Simd> SiteHalfSpinor;
typedef iImplHalfCommSpinor<SimdL> SiteHalfCommSpinor;
typedef iImplDoubledGaugeField<Simd> SiteDoubledGaugeField;
typedef Lattice<SiteSpinor> FermionField;
typedef Lattice<SitePropagator> PropagatorField;
typedef Lattice<SiteDoubledGaugeField> DoubledGaugeField;
typedef WilsonCompressor<SiteHalfCommSpinor,SiteHalfSpinor, SiteSpinor> Compressor;
typedef WilsonStencil<SiteSpinor, SiteHalfSpinor> StencilImpl;
typedef typename StencilImpl::View_type StencilView;
typedef GparityWilsonImplParams ImplParams;
ImplParams Params;
GparityWilsonImpl(const ImplParams &p = ImplParams()) : Params(p){};
// provide the multiply by link that is differentiated between Gparity (with
// flavour index) and non-Gparity
static accelerator_inline void multLink(SiteHalfSpinor &phi,
const SiteDoubledGaugeField &U,
const SiteHalfSpinor &chi,
int mu,
StencilEntry *SE,
StencilView &St)
{
typedef SiteHalfSpinor vobj;
typedef typename SiteHalfSpinor::scalar_object sobj;
typedef typename SiteHalfSpinor::vector_type vector_type;
vobj vtmp;
sobj stmp;
const int Nsimd =vector_type::Nsimd();
int direction = St._directions[mu];
int distance = St._distances[mu];
int ptype = St._permute_type[mu];
int sl = St._simd_layout[direction];
// Fixme X.Y.Z.T hardcode in stencil
int mmu = mu % Nd;
// assert our assumptions
assert((distance == 1) || (distance == -1)); // nearest neighbour stencil hard code
assert((sl == 1) || (sl == 2));
Coordinate icoor;
if ( SE->_around_the_world && St.twists[mmu] ) {
if ( sl == 2 ) {
ExtractBuffer<sobj> vals(Nsimd);
extract(chi,vals);
for(int s=0;s<Nsimd;s++){
St.iCoorFromIindex(icoor,s);
assert((icoor[direction]==0)||(icoor[direction]==1));
int permute_lane;
if ( distance == 1) {
permute_lane = icoor[direction]?1:0;
} else {
permute_lane = icoor[direction]?0:1;
}
if ( permute_lane ) {
stmp(0) = vals[s](1);
stmp(1) = vals[s](0);
vals[s] = stmp;
}
}
merge(vtmp,vals);
} else {
vtmp(0) = chi(1);
vtmp(1) = chi(0);
}
mult(&phi(0),&U(0)(mu),&vtmp(0));
mult(&phi(1),&U(1)(mu),&vtmp(1));
} else {
mult(&phi(0),&U(0)(mu),&chi(0));
mult(&phi(1),&U(1)(mu),&chi(1));
}
}
// Fixme: Gparity prop * link
static accelerator_inline void multLinkProp(SitePropagator &phi,
const SiteDoubledGaugeField &U,
const SitePropagator &chi,
int mu)
{
assert(0);
}
template <class ref>
static accelerator_inline void loadLinkElement(Simd &reg, ref &memory)
{
reg = memory;
}
inline void DoubleStore(GridBase *GaugeGrid,DoubledGaugeField &Uds,const GaugeField &Umu)
{
conformable(Uds.Grid(),GaugeGrid);
conformable(Umu.Grid(),GaugeGrid);
GaugeLinkField Utmp (GaugeGrid);
GaugeLinkField U (GaugeGrid);
GaugeLinkField Uconj(GaugeGrid);
Lattice<iScalar<vInteger> > coor(GaugeGrid);
for(int mu=0;mu<Nd;mu++){
LatticeCoordinate(coor,mu);
U = PeekIndex<LorentzIndex>(Umu,mu);
Uconj = conjugate(U);
// This phase could come from a simple bc 1,1,-1,1 ..
int neglink = GaugeGrid->GlobalDimensions()[mu]-1;
if ( Params.twists[mu] ) {
Uconj = where(coor==neglink,-Uconj,Uconj);
}
auto U_v = U.View();
auto Uds_v = Uds.View();
auto Uconj_v = Uconj.View();
auto Utmp_v= Utmp.View();
thread_loop( (auto ss=U_v.begin();ss<U_v.end();ss++),{
Uds_v[ss](0)(mu) = U_v[ss]();
Uds_v[ss](1)(mu) = Uconj_v[ss]();
});
U = adj(Cshift(U ,mu,-1)); // correct except for spanning the boundary
Uconj = adj(Cshift(Uconj,mu,-1));
Utmp = U;
if ( Params.twists[mu] ) {
Utmp = where(coor==0,Uconj,Utmp);
}
thread_loop((auto ss=Utmp_v.begin();ss<Utmp_v.end();ss++),{
Uds_v[ss](0)(mu+4) = Utmp_v[ss]();
});
Utmp = Uconj;
if ( Params.twists[mu] ) {
Utmp = where(coor==0,U,Utmp);
}
thread_loop((auto ss=Utmp_v.begin();ss<Utmp_v.end();ss++),{
Uds_v[ss](1)(mu+4) = Utmp_v[ss]();
});
}
}
inline void InsertForce4D(GaugeField &mat, FermionField &Btilde, FermionField &A, int mu) {
// DhopDir provides U or Uconj depending on coor/flavour.
GaugeLinkField link(mat.Grid());
// use lorentz for flavour as hack.
auto tmp = TraceIndex<SpinIndex>(outerProduct(Btilde, A));
auto link_v = link.View();
auto tmp_v = tmp.View();
thread_loop((auto ss = tmp_v.begin(); ss < tmp_v.end(); ss++), {
link_v[ss]() = tmp_v[ss](0, 0) + conjugate(tmp_v[ss](1, 1));
});
PokeIndex<LorentzIndex>(mat, link, mu);
return;
}
inline void InsertForce5D(GaugeField &mat, FermionField &Btilde, FermionField &Atilde, int mu) {
int Ls = Btilde.Grid()->_fdimensions[0];
GaugeLinkField tmp(mat.Grid());
tmp = Zero();
auto tmp_v = tmp.View();
auto Atilde_v = Atilde.View();
auto Btilde_v = Btilde.View();
thread_loop((int ss = 0; ss < tmp.Grid()->oSites(); ss++) ,{
for (int s = 0; s < Ls; s++) {
int sF = s + Ls * ss;
auto ttmp = traceIndex<SpinIndex>(outerProduct(Btilde_v[sF], Atilde_v[sF]));
tmp_v[ss]() = tmp_v[ss]() + ttmp(0, 0) + conjugate(ttmp(1, 1));
}
});
PokeIndex<LorentzIndex>(mat, tmp, mu);
return;
}
};
/////////////////////////////////////////////////////////////////////////////
// Single flavour one component spinors with colour index
/////////////////////////////////////////////////////////////////////////////
template <class S, class Representation = FundamentalRepresentation >
class StaggeredImpl : public PeriodicGaugeImpl<GaugeImplTypes<S, Representation::Dimension > > {
public:
typedef RealD _Coeff_t ;
static const int Dimension = Representation::Dimension;
static const bool LsVectorised=false;
typedef PeriodicGaugeImpl<GaugeImplTypes<S, Dimension > > Gimpl;
//Necessary?
constexpr bool is_fundamental() const{return Dimension == Nc ? 1 : 0;}
typedef _Coeff_t Coeff_t;
INHERIT_GIMPL_TYPES(Gimpl);
template <typename vtype> using iImplSpinor = iScalar<iScalar<iVector<vtype, Dimension> > >;
template <typename vtype> using iImplHalfSpinor = iScalar<iScalar<iVector<vtype, Dimension> > >;
template <typename vtype> using iImplDoubledGaugeField = iVector<iScalar<iMatrix<vtype, Dimension> >, Nds>;
template <typename vtype> using iImplPropagator = iScalar<iScalar<iMatrix<vtype, Dimension> > >;
typedef iImplSpinor<Simd> SiteSpinor;
typedef iImplHalfSpinor<Simd> SiteHalfSpinor;
typedef iImplDoubledGaugeField<Simd> SiteDoubledGaugeField;
typedef iImplPropagator<Simd> SitePropagator;
typedef Lattice<SiteSpinor> FermionField;
typedef Lattice<SiteDoubledGaugeField> DoubledGaugeField;
typedef Lattice<SitePropagator> PropagatorField;
typedef SimpleCompressor<SiteSpinor> Compressor;
typedef StaggeredImplParams ImplParams;
typedef CartesianStencil<SiteSpinor, SiteSpinor> StencilImpl;
typedef typename StencilImpl::View_type StencilView;
ImplParams Params;
StaggeredImpl(const ImplParams &p = ImplParams()) : Params(p){};
static accelerator_inline void multLink(SiteSpinor &phi,
const SiteDoubledGaugeField &U,
const SiteSpinor &chi,
int mu)
{
mult(&phi(), &U(mu), &chi());
}
static accelerator_inline void multLinkAdd(SiteSpinor &phi,
const SiteDoubledGaugeField &U,
const SiteSpinor &chi,
int mu)
{
mac(&phi(), &U(mu), &chi());
}
template <class ref>
static accelerator_inline void loadLinkElement(Simd &reg, ref &memory)
{
reg = memory;
}
inline void DoubleStore(GridBase *GaugeGrid,
DoubledGaugeField &UUUds, // for Naik term
DoubledGaugeField &Uds,
const GaugeField &Uthin,
const GaugeField &Ufat) {
conformable(Uds.Grid(), GaugeGrid);
conformable(Uthin.Grid(), GaugeGrid);
conformable(Ufat.Grid(), GaugeGrid);
GaugeLinkField U(GaugeGrid);
GaugeLinkField UU(GaugeGrid);
GaugeLinkField UUU(GaugeGrid);
GaugeLinkField Udag(GaugeGrid);
GaugeLinkField UUUdag(GaugeGrid);
for (int mu = 0; mu < Nd; mu++) {
// Staggered Phase.
Lattice<iScalar<vInteger> > coor(GaugeGrid);
Lattice<iScalar<vInteger> > x(GaugeGrid); LatticeCoordinate(x,0);
Lattice<iScalar<vInteger> > y(GaugeGrid); LatticeCoordinate(y,1);
Lattice<iScalar<vInteger> > z(GaugeGrid); LatticeCoordinate(z,2);
Lattice<iScalar<vInteger> > t(GaugeGrid); LatticeCoordinate(t,3);
Lattice<iScalar<vInteger> > lin_z(GaugeGrid); lin_z=x+y;
Lattice<iScalar<vInteger> > lin_t(GaugeGrid); lin_t=x+y+z;
ComplexField phases(GaugeGrid); phases=1.0;
if ( mu == 1 ) phases = where( mod(x ,2)==(Integer)0, phases,-phases);
if ( mu == 2 ) phases = where( mod(lin_z,2)==(Integer)0, phases,-phases);
if ( mu == 3 ) phases = where( mod(lin_t,2)==(Integer)0, phases,-phases);
// 1 hop based on fat links
U = PeekIndex<LorentzIndex>(Ufat, mu);
Udag = adj( Cshift(U, mu, -1));
U = U *phases;
Udag = Udag *phases;
PokeIndex<LorentzIndex>(Uds, U, mu);
PokeIndex<LorentzIndex>(Uds, Udag, mu + 4);
// 3 hop based on thin links. Crazy huh ?
U = PeekIndex<LorentzIndex>(Uthin, mu);
UU = Gimpl::CovShiftForward(U,mu,U);
UUU= Gimpl::CovShiftForward(U,mu,UU);
UUUdag = adj( Cshift(UUU, mu, -3));
UUU = UUU *phases;
UUUdag = UUUdag *phases;
PokeIndex<LorentzIndex>(UUUds, UUU, mu);
PokeIndex<LorentzIndex>(UUUds, UUUdag, mu+4);
}
}
inline void InsertForce4D(GaugeField &mat, FermionField &Btilde, FermionField &A,int mu){
GaugeLinkField link(mat.Grid());
link = TraceIndex<SpinIndex>(outerProduct(Btilde,A));
PokeIndex<LorentzIndex>(mat,link,mu);
}
inline void InsertForce5D(GaugeField &mat, FermionField &Btilde, FermionField &Atilde,int mu){
assert (0);
// Must never hit
}
};
/////////////////////////////////////////////////////////////////////////////
// Single flavour one component spinors with colour index. 5d vec
/////////////////////////////////////////////////////////////////////////////
template <class S, class Representation = FundamentalRepresentation >
class StaggeredVec5dImpl : public PeriodicGaugeImpl<GaugeImplTypes<S, Representation::Dimension > > {
public:
static const int Dimension = Representation::Dimension;
static const bool LsVectorised=true;
typedef RealD Coeff_t ;
typedef PeriodicGaugeImpl<GaugeImplTypes<S, Dimension > > Gimpl;
//Necessary?
constexpr bool is_fundamental() const{return Dimension == Nc ? 1 : 0;}
INHERIT_GIMPL_TYPES(Gimpl);
template <typename vtype> using iImplSpinor = iScalar<iScalar<iVector<vtype, Dimension> > >;
template <typename vtype> using iImplHalfSpinor = iScalar<iScalar<iVector<vtype, Dimension> > >;
template <typename vtype> using iImplDoubledGaugeField = iVector<iScalar<iMatrix<vtype, Dimension> >, Nds>;
template <typename vtype> using iImplGaugeField = iVector<iScalar<iMatrix<vtype, Dimension> >, Nd>;
template <typename vtype> using iImplGaugeLink = iScalar<iScalar<iMatrix<vtype, Dimension> > >;
template <typename vtype> using iImplPropagator = iScalar<iScalar<iMatrix<vtype, Dimension> > >;
// Make the doubled gauge field a *scalar*
typedef iImplDoubledGaugeField<typename Simd::scalar_type> SiteDoubledGaugeField; // This is a scalar
typedef iImplGaugeField<typename Simd::scalar_type> SiteScalarGaugeField; // scalar
typedef iImplGaugeLink<typename Simd::scalar_type> SiteScalarGaugeLink; // scalar
typedef iImplPropagator<Simd> SitePropagator;
typedef Lattice<SiteDoubledGaugeField> DoubledGaugeField;
typedef Lattice<SitePropagator> PropagatorField;
typedef iImplSpinor<Simd> SiteSpinor;
typedef iImplHalfSpinor<Simd> SiteHalfSpinor;
typedef Lattice<SiteSpinor> FermionField;
typedef SimpleCompressor<SiteSpinor> Compressor;
typedef StaggeredImplParams ImplParams;
typedef CartesianStencil<SiteSpinor, SiteSpinor> StencilImpl;
typedef typename StencilImpl::View_type StencilView;
ImplParams Params;
StaggeredVec5dImpl(const ImplParams &p = ImplParams()) : Params(p){};
template <class ref>
static accelerator_inline void loadLinkElement(Simd &reg, ref &memory)
{
vsplat(reg, memory);
}
static accelerator_inline void multLink(SiteHalfSpinor &phi,
const SiteDoubledGaugeField &U,
const SiteHalfSpinor &chi,
int mu)
{
SiteGaugeLink UU;
for (int i = 0; i < Dimension; i++) {
for (int j = 0; j < Dimension; j++) {
vsplat(UU()()(i, j), U(mu)()(i, j));
}
}
mult(&phi(), &UU(), &chi());
}
static accelerator_inline void multLinkAdd(SiteHalfSpinor &phi,
const SiteDoubledGaugeField &U,
const SiteHalfSpinor &chi,
int mu)
{
SiteGaugeLink UU;
for (int i = 0; i < Dimension; i++) {
for (int j = 0; j < Dimension; j++) {
vsplat(UU()()(i, j), U(mu)()(i, j));
}
}
mac(&phi(), &UU(), &chi());
}
inline void DoubleStore(GridBase *GaugeGrid,
DoubledGaugeField &UUUds, // for Naik term
DoubledGaugeField &Uds,
const GaugeField &Uthin,
const GaugeField &Ufat)
{
GridBase * InputGrid = Uthin.Grid();
conformable(InputGrid,Ufat.Grid());
GaugeLinkField U(InputGrid);
GaugeLinkField UU(InputGrid);
GaugeLinkField UUU(InputGrid);
GaugeLinkField Udag(InputGrid);
GaugeLinkField UUUdag(InputGrid);
for (int mu = 0; mu < Nd; mu++) {
// Staggered Phase.
Lattice<iScalar<vInteger> > coor(InputGrid);
Lattice<iScalar<vInteger> > x(InputGrid); LatticeCoordinate(x,0);
Lattice<iScalar<vInteger> > y(InputGrid); LatticeCoordinate(y,1);
Lattice<iScalar<vInteger> > z(InputGrid); LatticeCoordinate(z,2);
Lattice<iScalar<vInteger> > t(InputGrid); LatticeCoordinate(t,3);
Lattice<iScalar<vInteger> > lin_z(InputGrid); lin_z=x+y;
Lattice<iScalar<vInteger> > lin_t(InputGrid); lin_t=x+y+z;
ComplexField phases(InputGrid); phases=1.0;
if ( mu == 1 ) phases = where( mod(x ,2)==(Integer)0, phases,-phases);
if ( mu == 2 ) phases = where( mod(lin_z,2)==(Integer)0, phases,-phases);
if ( mu == 3 ) phases = where( mod(lin_t,2)==(Integer)0, phases,-phases);
// 1 hop based on fat links
U = PeekIndex<LorentzIndex>(Ufat, mu);
Udag = adj( Cshift(U, mu, -1));
U = U *phases;
Udag = Udag *phases;
for (int lidx = 0; lidx < GaugeGrid->lSites(); lidx++) {
SiteScalarGaugeLink ScalarU;
SiteDoubledGaugeField ScalarUds;
Coordinate lcoor;
GaugeGrid->LocalIndexToLocalCoor(lidx, lcoor);
peekLocalSite(ScalarUds, Uds, lcoor);
peekLocalSite(ScalarU, U, lcoor);
ScalarUds(mu) = ScalarU();
peekLocalSite(ScalarU, Udag, lcoor);
ScalarUds(mu + 4) = ScalarU();
pokeLocalSite(ScalarUds, Uds, lcoor);
}
// 3 hop based on thin links. Crazy huh ?
U = PeekIndex<LorentzIndex>(Uthin, mu);
UU = Gimpl::CovShiftForward(U,mu,U);
UUU= Gimpl::CovShiftForward(U,mu,UU);
UUUdag = adj( Cshift(UUU, mu, -3));
UUU = UUU *phases;
UUUdag = UUUdag *phases;
for (int lidx = 0; lidx < GaugeGrid->lSites(); lidx++) {
SiteScalarGaugeLink ScalarU;
SiteDoubledGaugeField ScalarUds;
Coordinate lcoor;
GaugeGrid->LocalIndexToLocalCoor(lidx, lcoor);
peekLocalSite(ScalarUds, UUUds, lcoor);
peekLocalSite(ScalarU, UUU, lcoor);
ScalarUds(mu) = ScalarU();
peekLocalSite(ScalarU, UUUdag, lcoor);
ScalarUds(mu + 4) = ScalarU();
pokeLocalSite(ScalarUds, UUUds, lcoor);
}
}
}
inline void InsertForce4D(GaugeField &mat, FermionField &Btilde, FermionField &A,int mu){
assert(0);
}
inline void InsertForce5D(GaugeField &mat, FermionField &Btilde, FermionField &Atilde,int mu){
assert (0);
}
};
typedef WilsonImpl<vComplex, FundamentalRepresentation, CoeffReal > WilsonImplR; // Real.. whichever prec
typedef WilsonImpl<vComplexF, FundamentalRepresentation, CoeffReal > WilsonImplF; // Float
typedef WilsonImpl<vComplexD, FundamentalRepresentation, CoeffReal > WilsonImplD; // Double
typedef WilsonImpl<vComplex, FundamentalRepresentation, CoeffRealHalfComms > WilsonImplRL; // Real.. whichever prec
typedef WilsonImpl<vComplexF, FundamentalRepresentation, CoeffRealHalfComms > WilsonImplFH; // Float
typedef WilsonImpl<vComplexD, FundamentalRepresentation, CoeffRealHalfComms > WilsonImplDF; // Double
typedef WilsonImpl<vComplex, FundamentalRepresentation, CoeffComplex > ZWilsonImplR; // Real.. whichever prec
typedef WilsonImpl<vComplexF, FundamentalRepresentation, CoeffComplex > ZWilsonImplF; // Float
typedef WilsonImpl<vComplexD, FundamentalRepresentation, CoeffComplex > ZWilsonImplD; // Double
typedef WilsonImpl<vComplex, FundamentalRepresentation, CoeffComplexHalfComms > ZWilsonImplRL; // Real.. whichever prec
typedef WilsonImpl<vComplexF, FundamentalRepresentation, CoeffComplexHalfComms > ZWilsonImplFH; // Float
typedef WilsonImpl<vComplexD, FundamentalRepresentation, CoeffComplexHalfComms > ZWilsonImplDF; // Double
typedef WilsonImpl<vComplex, AdjointRepresentation, CoeffReal > WilsonAdjImplR; // Real.. whichever prec
typedef WilsonImpl<vComplexF, AdjointRepresentation, CoeffReal > WilsonAdjImplF; // Float
typedef WilsonImpl<vComplexD, AdjointRepresentation, CoeffReal > WilsonAdjImplD; // Double
typedef WilsonImpl<vComplex, TwoIndexSymmetricRepresentation, CoeffReal > WilsonTwoIndexSymmetricImplR; // Real.. whichever prec
typedef WilsonImpl<vComplexF, TwoIndexSymmetricRepresentation, CoeffReal > WilsonTwoIndexSymmetricImplF; // Float
typedef WilsonImpl<vComplexD, TwoIndexSymmetricRepresentation, CoeffReal > WilsonTwoIndexSymmetricImplD; // Double
typedef DomainWallVec5dImpl<vComplex ,Nc, CoeffReal> DomainWallVec5dImplR; // Real.. whichever prec
typedef DomainWallVec5dImpl<vComplexF,Nc, CoeffReal> DomainWallVec5dImplF; // Float
typedef DomainWallVec5dImpl<vComplexD,Nc, CoeffReal> DomainWallVec5dImplD; // Double
typedef DomainWallVec5dImpl<vComplex ,Nc, CoeffRealHalfComms> DomainWallVec5dImplRL; // Real.. whichever prec
typedef DomainWallVec5dImpl<vComplexF,Nc, CoeffRealHalfComms> DomainWallVec5dImplFH; // Float
typedef DomainWallVec5dImpl<vComplexD,Nc, CoeffRealHalfComms> DomainWallVec5dImplDF; // Double
typedef DomainWallVec5dImpl<vComplex ,Nc,CoeffComplex> ZDomainWallVec5dImplR; // Real.. whichever prec
typedef DomainWallVec5dImpl<vComplexF,Nc,CoeffComplex> ZDomainWallVec5dImplF; // Float
typedef DomainWallVec5dImpl<vComplexD,Nc,CoeffComplex> ZDomainWallVec5dImplD; // Double
typedef DomainWallVec5dImpl<vComplex ,Nc,CoeffComplexHalfComms> ZDomainWallVec5dImplRL; // Real.. whichever prec
typedef DomainWallVec5dImpl<vComplexF,Nc,CoeffComplexHalfComms> ZDomainWallVec5dImplFH; // Float
typedef DomainWallVec5dImpl<vComplexD,Nc,CoeffComplexHalfComms> ZDomainWallVec5dImplDF; // Double
typedef GparityWilsonImpl<vComplex , Nc,CoeffReal> GparityWilsonImplR; // Real.. whichever prec
typedef GparityWilsonImpl<vComplexF, Nc,CoeffReal> GparityWilsonImplF; // Float
typedef GparityWilsonImpl<vComplexD, Nc,CoeffReal> GparityWilsonImplD; // Double
typedef GparityWilsonImpl<vComplex , Nc,CoeffRealHalfComms> GparityWilsonImplRL; // Real.. whichever prec
typedef GparityWilsonImpl<vComplexF, Nc,CoeffRealHalfComms> GparityWilsonImplFH; // Float
typedef GparityWilsonImpl<vComplexD, Nc,CoeffRealHalfComms> GparityWilsonImplDF; // Double
typedef StaggeredImpl<vComplex, FundamentalRepresentation > StaggeredImplR; // Real.. whichever prec
typedef StaggeredImpl<vComplexF, FundamentalRepresentation > StaggeredImplF; // Float
typedef StaggeredImpl<vComplexD, FundamentalRepresentation > StaggeredImplD; // Double
typedef StaggeredVec5dImpl<vComplex, FundamentalRepresentation > StaggeredVec5dImplR; // Real.. whichever prec
typedef StaggeredVec5dImpl<vComplexF, FundamentalRepresentation > StaggeredVec5dImplF; // Float
typedef StaggeredVec5dImpl<vComplexD, FundamentalRepresentation > StaggeredVec5dImplD; // Double
NAMESPACE_END(Grid);
#endif
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