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Grid/lib/qcd/action/fermion/DomainWallEOFAFermioncache.cc

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/*************************************************************************************
Grid physics library, www.github.com/paboyle/Grid
Source file: ./lib/qcd/action/fermion/DomainWallEOFAFermioncache.cc
Copyright (C) 2017
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>
Author: David Murphy <dmurphy@phys.columbia.edu>
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 */
#include <Grid/qcd/action/fermion/FermionCore.h>
#include <Grid/qcd/action/fermion/DomainWallEOFAFermion.h>
namespace Grid {
namespace QCD {
// FIXME -- make a version of these routines with site loop outermost for cache reuse.
// Pminus fowards
// Pplus backwards..
template<class Impl>
void DomainWallEOFAFermion<Impl>::M5D(const FermionField& psi, const FermionField& phi,
FermionField& chi, std::vector<Coeff_t>& lower, std::vector<Coeff_t>& diag, std::vector<Coeff_t>& upper)
{
int Ls = this->Ls;
GridBase* grid = psi._grid;
assert(phi.checkerboard == psi.checkerboard);
chi.checkerboard = psi.checkerboard;
// Flops = 6.0*(Nc*Ns) *Ls*vol
this->M5Dcalls++;
this->M5Dtime -= usecond();
parallel_for(int ss=0; ss<grid->oSites(); ss+=Ls){ // adds Ls
for(int s=0; s<Ls; s++){
auto tmp = psi._odata[0];
if(s==0) {
spProj5m(tmp, psi._odata[ss+s+1]);
chi[ss+s] = diag[s]*phi[ss+s] + upper[s]*tmp;
spProj5p(tmp, psi._odata[ss+Ls-1]);
chi[ss+s] = chi[ss+s] + lower[s]*tmp;
} else if(s==(Ls-1)) {
spProj5m(tmp, psi._odata[ss+0]);
chi[ss+s] = diag[s]*phi[ss+s] + upper[s]*tmp;
spProj5p(tmp, psi._odata[ss+s-1]);
chi[ss+s] = chi[ss+s] + lower[s]*tmp;
} else {
spProj5m(tmp, psi._odata[ss+s+1]);
chi[ss+s] = diag[s]*phi[ss+s] + upper[s]*tmp;
spProj5p(tmp, psi._odata[ss+s-1]);
chi[ss+s] = chi[ss+s] + lower[s]*tmp;
}
}
}
this->M5Dtime += usecond();
}
template<class Impl>
void DomainWallEOFAFermion<Impl>::M5Ddag(const FermionField& psi, const FermionField& phi,
FermionField& chi, std::vector<Coeff_t>& lower, std::vector<Coeff_t>& diag, std::vector<Coeff_t>& upper)
{
int Ls = this->Ls;
GridBase* grid = psi._grid;
assert(phi.checkerboard == psi.checkerboard);
chi.checkerboard=psi.checkerboard;
// Flops = 6.0*(Nc*Ns) *Ls*vol
this->M5Dcalls++;
this->M5Dtime -= usecond();
parallel_for(int ss=0; ss<grid->oSites(); ss+=Ls){ // adds Ls
auto tmp = psi._odata[0];
for(int s=0; s<Ls; s++){
if(s==0) {
spProj5p(tmp, psi._odata[ss+s+1]);
chi[ss+s] = diag[s]*phi[ss+s] + upper[s]*tmp;
spProj5m(tmp, psi._odata[ss+Ls-1]);
chi[ss+s] = chi[ss+s] + lower[s]*tmp;
} else if(s==(Ls-1)) {
spProj5p(tmp, psi._odata[ss+0]);
chi[ss+s] = diag[s]*phi[ss+s] + upper[s]*tmp;
spProj5m(tmp, psi._odata[ss+s-1]);
chi[ss+s] = chi[ss+s] + lower[s]*tmp;
} else {
spProj5p(tmp, psi._odata[ss+s+1]);
chi[ss+s] = diag[s]*phi[ss+s] + upper[s]*tmp;
spProj5m(tmp, psi._odata[ss+s-1]);
chi[ss+s] = chi[ss+s] + lower[s]*tmp;
}
}
}
this->M5Dtime += usecond();
}
template<class Impl>
void DomainWallEOFAFermion<Impl>::MooeeInv(const FermionField& psi, FermionField& chi)
{
GridBase* grid = psi._grid;
int Ls = this->Ls;
chi.checkerboard = psi.checkerboard;
this->MooeeInvCalls++;
this->MooeeInvTime -= usecond();
parallel_for(int ss=0; ss<grid->oSites(); ss+=Ls){ // adds Ls
auto tmp1 = psi._odata[0];
auto tmp2 = psi._odata[0];
// flops = 12*2*Ls + 12*2*Ls + 3*12*Ls + 12*2*Ls = 12*Ls * (9) = 108*Ls flops
// Apply (L^{\prime})^{-1}
chi[ss] = psi[ss]; // chi[0]=psi[0]
for(int s=1; s<Ls; s++){
spProj5p(tmp1, chi[ss+s-1]);
chi[ss+s] = psi[ss+s] - this->lee[s-1]*tmp1;
}
// L_m^{-1}
for(int s=0; s<Ls-1; s++){ // Chi[ee] = 1 - sum[s<Ls-1] -leem[s]P_- chi
spProj5m(tmp1, chi[ss+s]);
chi[ss+Ls-1] = chi[ss+Ls-1] - this->leem[s]*tmp1;
}
// U_m^{-1} D^{-1}
for(int s=0; s<Ls-1; s++){ // Chi[s] + 1/d chi[s]
spProj5p(tmp1, chi[ss+Ls-1]);
chi[ss+s] = (1.0/this->dee[s])*chi[ss+s] - (this->ueem[s]/this->dee[Ls])*tmp1;
}
spProj5m(tmp2, chi[ss+Ls-1]);
chi[ss+Ls-1] = (1.0/this->dee[Ls])*tmp1 + (1.0/this->dee[Ls-1])*tmp2;
// Apply U^{-1}
for(int s=Ls-2; s>=0; s--){
spProj5m(tmp1, chi[ss+s+1]);
chi[ss+s] = chi[ss+s] - this->uee[s]*tmp1;
}
}
this->MooeeInvTime += usecond();
}
template<class Impl>
void DomainWallEOFAFermion<Impl>::MooeeInvDag(const FermionField& psi, FermionField& chi)
{
GridBase* grid = psi._grid;
int Ls = this->Ls;
assert(psi.checkerboard == psi.checkerboard);
chi.checkerboard = psi.checkerboard;
std::vector<Coeff_t> ueec(Ls);
std::vector<Coeff_t> deec(Ls+1);
std::vector<Coeff_t> leec(Ls);
std::vector<Coeff_t> ueemc(Ls);
std::vector<Coeff_t> leemc(Ls);
for(int s=0; s<ueec.size(); s++){
ueec[s] = conjugate(this->uee[s]);
deec[s] = conjugate(this->dee[s]);
leec[s] = conjugate(this->lee[s]);
ueemc[s] = conjugate(this->ueem[s]);
leemc[s] = conjugate(this->leem[s]);
}
deec[Ls] = conjugate(this->dee[Ls]);
this->MooeeInvCalls++;
this->MooeeInvTime -= usecond();
parallel_for(int ss=0; ss<grid->oSites(); ss+=Ls){ // adds Ls
auto tmp1 = psi._odata[0];
auto tmp2 = psi._odata[0];
// Apply (U^{\prime})^{-dagger}
chi[ss] = psi[ss];
for(int s=1; s<Ls; s++){
spProj5m(tmp1, chi[ss+s-1]);
chi[ss+s] = psi[ss+s] - ueec[s-1]*tmp1;
}
// U_m^{-\dagger}
for(int s=0; s<Ls-1; s++){
spProj5p(tmp1, chi[ss+s]);
chi[ss+Ls-1] = chi[ss+Ls-1] - ueemc[s]*tmp1;
}
// L_m^{-\dagger} D^{-dagger}
for(int s=0; s<Ls-1; s++){
spProj5m(tmp1, chi[ss+Ls-1]);
chi[ss+s] = (1.0/deec[s])*chi[ss+s] - (leemc[s]/deec[Ls-1])*tmp1;
}
spProj5p(tmp2, chi[ss+Ls-1]);
chi[ss+Ls-1] = (1.0/deec[Ls-1])*tmp1 + (1.0/deec[Ls])*tmp2;
// Apply L^{-dagger}
for(int s=Ls-2; s>=0; s--){
spProj5p(tmp1, chi[ss+s+1]);
chi[ss+s] = chi[ss+s] - leec[s]*tmp1;
}
}
this->MooeeInvTime += usecond();
}
#ifdef DOMAIN_WALL_EOFA_DPERP_CACHE
INSTANTIATE_DPERP_DWF_EOFA(WilsonImplF);
INSTANTIATE_DPERP_DWF_EOFA(WilsonImplD);
INSTANTIATE_DPERP_DWF_EOFA(GparityWilsonImplF);
INSTANTIATE_DPERP_DWF_EOFA(GparityWilsonImplD);
INSTANTIATE_DPERP_DWF_EOFA(ZWilsonImplF);
INSTANTIATE_DPERP_DWF_EOFA(ZWilsonImplD);
INSTANTIATE_DPERP_DWF_EOFA(WilsonImplFH);
INSTANTIATE_DPERP_DWF_EOFA(WilsonImplDF);
INSTANTIATE_DPERP_DWF_EOFA(GparityWilsonImplFH);
INSTANTIATE_DPERP_DWF_EOFA(GparityWilsonImplDF);
INSTANTIATE_DPERP_DWF_EOFA(ZWilsonImplFH);
INSTANTIATE_DPERP_DWF_EOFA(ZWilsonImplDF);
#endif
}}
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