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Faster fermtoprop case

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This commit is contained in:
Peter Boyle
2022-11-30 15:11:29 -05:00
parent 0655dab466
commit e13930c8b2
1 changed files with 23 additions and 0 deletions
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23
Grid/qcd/QCD.h
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@@ -451,9 +451,20 @@ template<class vobj> void pokeLorentz(vobj &lhs,const decltype(peekIndex<Lorentz
// Fermion <-> propagator assignements // Fermion <-> propagator assignements
////////////////////////////////////////////// //////////////////////////////////////////////
//template <class Prop, class Ferm> //template <class Prop, class Ferm>
#define FAST_FERM_TO_PROP
template <class Fimpl> template <class Fimpl>
void FermToProp(typename Fimpl::PropagatorField &p, const typename Fimpl::FermionField &f, const int s, const int c) void FermToProp(typename Fimpl::PropagatorField &p, const typename Fimpl::FermionField &f, const int s, const int c)
{ {
#ifdef FAST_FERM_TO_PROP
autoView(p_v,p,AcceleratorWrite);
autoView(f_v,f,AcceleratorRead);
accelerator_for(idx,p_v.oSites(),1,{
for(int ss = 0; ss < Ns; ++ss) {
for(int cc = 0; cc < Fimpl::Dimension; ++cc) {
p_v[idx]()(ss,s)(cc,c) = f_v[idx]()(ss)(cc); // Propagator sink index is LEFT, suitable for left mult by gauge link (e.g.)
}}
);
#else
for(int j = 0; j < Ns; ++j) for(int j = 0; j < Ns; ++j)
{ {
auto pjs = peekSpin(p, j, s); auto pjs = peekSpin(p, j, s);
@@ -465,12 +476,23 @@ void FermToProp(typename Fimpl::PropagatorField &p, const typename Fimpl::Fermio
} }
pokeSpin(p, pjs, j, s); pokeSpin(p, pjs, j, s);
} }
#endif
} }
//template <class Prop, class Ferm> //template <class Prop, class Ferm>
template <class Fimpl> template <class Fimpl>
void PropToFerm(typename Fimpl::FermionField &f, const typename Fimpl::PropagatorField &p, const int s, const int c) void PropToFerm(typename Fimpl::FermionField &f, const typename Fimpl::PropagatorField &p, const int s, const int c)
{ {
#ifdef FAST_FERM_TO_PROP
autoView(p_v,p,AcceleratorWrite);
autoView(f_v,f,AcceleratorRead);
accelerator_for(idx,p_v.oSites(),1,{
for(int ss = 0; ss < Ns; ++ss) {
for(int cc = 0; cc < Fimpl::Dimension; ++cc) {
f_v[idx]()(ss)(cc) = p_v[idx]()(ss,s)(cc,c); // LEFT index is copied across for s,c right index
}}
);
#else
for(int j = 0; j < Ns; ++j) for(int j = 0; j < Ns; ++j)
{ {
auto pjs = peekSpin(p, j, s); auto pjs = peekSpin(p, j, s);
@@ -482,6 +504,7 @@ void PropToFerm(typename Fimpl::FermionField &f, const typename Fimpl::Propagato
} }
pokeSpin(f, fj, j); pokeSpin(f, fj, j);
} }
#endif
} }
////////////////////////////////////////////// //////////////////////////////////////////////