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Grid/lib/qcd/action/fermion/MobiusEOFAFermionssp.cc
paboyle c4f82e072b _grid becomes private ; use Grid()§
2018-01-27 00:04:12 +00:00

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/*************************************************************************************
Grid physics library, www.github.com/paboyle/Grid
Source file: ./lib/qcd/action/fermion/MobiusEOFAFermionssp.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/MobiusEOFAFermion.h>
NAMESPACE_BEGIN(Grid);
// FIXME -- make a version of these routines with site loop outermost for cache reuse.
// Pminus fowards
// Pplus backwards
template<class Impl>
void MobiusEOFAFermion<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)
{
Coeff_t one(1.0);
int Ls = this->Ls;
for(int s=0; s<Ls; s++){
if(s==0) {
axpby_ssp_pminus(chi, diag[s], phi, upper[s], psi, s, s+1);
axpby_ssp_pplus (chi, one, chi, lower[s], psi, s, Ls-1);
} else if (s==(Ls-1)) {
axpby_ssp_pminus(chi, diag[s], phi, upper[s], psi, s, 0);
axpby_ssp_pplus (chi, one, chi, lower[s], psi, s, s-1);
} else {
axpby_ssp_pminus(chi, diag[s], phi, upper[s], psi, s, s+1);
axpby_ssp_pplus(chi, one, chi, lower[s], psi, s, s-1);
}
}
}
template<class Impl>
void MobiusEOFAFermion<Impl>::M5D_shift(const FermionField& psi, const FermionField& phi,
FermionField& chi, std::vector<Coeff_t>& lower, std::vector<Coeff_t>& diag, std::vector<Coeff_t>& upper,
std::vector<Coeff_t>& shift_coeffs)
{
Coeff_t one(1.0);
int Ls = this->Ls;
for(int s=0; s<Ls; s++){
if(s==0) {
axpby_ssp_pminus(chi, diag[s], phi, upper[s], psi, s, s+1);
axpby_ssp_pplus (chi, one, chi, lower[s], psi, s, Ls-1);
} else if (s==(Ls-1)) {
axpby_ssp_pminus(chi, diag[s], phi, upper[s], psi, s, 0);
axpby_ssp_pplus (chi, one, chi, lower[s], psi, s, s-1);
} else {
axpby_ssp_pminus(chi, diag[s], phi, upper[s], psi, s, s+1);
axpby_ssp_pplus(chi, one, chi, lower[s], psi, s, s-1);
}
if(this->pm == 1){ axpby_ssp_pplus(chi, one, chi, shift_coeffs[s], psi, s, Ls-1); }
else{ axpby_ssp_pminus(chi, one, chi, shift_coeffs[s], psi, s, 0); }
}
}
template<class Impl>
void MobiusEOFAFermion<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)
{
Coeff_t one(1.0);
int Ls = this->Ls;
for(int s=0; s<Ls; s++){
if(s==0) {
axpby_ssp_pplus (chi, diag[s], phi, upper[s], psi, s, s+1);
axpby_ssp_pminus(chi, one, chi, lower[s], psi, s, Ls-1);
} else if (s==(Ls-1)) {
axpby_ssp_pplus (chi, diag[s], phi, upper[s], psi, s, 0);
axpby_ssp_pminus(chi, one, chi, lower[s], psi, s, s-1);
} else {
axpby_ssp_pplus (chi, diag[s], phi, upper[s], psi, s, s+1);
axpby_ssp_pminus(chi, one, chi, lower[s], psi, s, s-1);
}
}
}
template<class Impl>
void MobiusEOFAFermion<Impl>::M5Ddag_shift(const FermionField& psi, const FermionField& phi,
FermionField& chi, std::vector<Coeff_t>& lower, std::vector<Coeff_t>& diag, std::vector<Coeff_t>& upper,
std::vector<Coeff_t>& shift_coeffs)
{
Coeff_t one(1.0);
int Ls = this->Ls;
for(int s=0; s<Ls; s++){
if(s==0) {
axpby_ssp_pplus (chi, diag[s], phi, upper[s], psi, s, s+1);
axpby_ssp_pminus(chi, one, chi, lower[s], psi, s, Ls-1);
} else if (s==(Ls-1)) {
axpby_ssp_pplus (chi, diag[s], phi, upper[s], psi, s, 0);
axpby_ssp_pminus(chi, one, chi, lower[s], psi, s, s-1);
} else {
axpby_ssp_pplus (chi, diag[s], phi, upper[s], psi, s, s+1);
axpby_ssp_pminus(chi, one, chi, lower[s], psi, s, s-1);
}
if(this->pm == 1){ axpby_ssp_pplus(chi, one, chi, shift_coeffs[s], psi, Ls-1, s); }
else{ axpby_ssp_pminus(chi, one, chi, shift_coeffs[s], psi, 0, s); }
}
}
template<class Impl>
void MobiusEOFAFermion<Impl>::MooeeInv(const FermionField& psi, FermionField& chi)
{
if(this->shift != 0.0){ MooeeInv_shift(psi,chi); return; }
Coeff_t one(1.0);
Coeff_t czero(0.0);
chi.Checkerboard() = psi.Checkerboard();
int Ls = this->Ls;
// Apply (L^{\prime})^{-1}
axpby_ssp(chi, one, psi, czero, psi, 0, 0); // chi[0]=psi[0]
for(int s=1; s<Ls; s++){
axpby_ssp_pplus(chi, one, psi, -this->lee[s-1], chi, s, s-1);// recursion Psi[s] -lee P_+ chi[s-1]
}
// L_m^{-1}
for(int s=0; s<Ls-1; s++){ // Chi[ee] = 1 - sum[s<Ls-1] -leem[s]P_- chi
axpby_ssp_pminus(chi, one, chi, -this->leem[s], chi, Ls-1, s);
}
// U_m^{-1} D^{-1}
for(int s=0; s<Ls-1; s++){
axpby_ssp_pplus(chi, one/this->dee[s], chi, -this->ueem[s]/this->dee[Ls-1], chi, s, Ls-1);
}
axpby_ssp(chi, one/this->dee[Ls-1], chi, czero, chi, Ls-1, Ls-1);
// Apply U^{-1}
for(int s=Ls-2; s>=0; s--){
axpby_ssp_pminus(chi, one, chi, -this->uee[s], chi, s, s+1); // chi[Ls]
}
}
template<class Impl>
void MobiusEOFAFermion<Impl>::MooeeInv_shift(const FermionField& psi, FermionField& chi)
{
Coeff_t one(1.0);
Coeff_t czero(0.0);
chi.Checkerboard() = psi.Checkerboard();
int Ls = this->Ls;
FermionField tmp(psi.Grid());
// Apply (L^{\prime})^{-1}
axpby_ssp(chi, one, psi, czero, psi, 0, 0); // chi[0]=psi[0]
axpby_ssp(tmp, czero, tmp, this->MooeeInv_shift_lc[0], psi, 0, 0);
for(int s=1; s<Ls; s++){
axpby_ssp_pplus(chi, one, psi, -this->lee[s-1], chi, s, s-1);// recursion Psi[s] -lee P_+ chi[s-1]
axpby_ssp(tmp, one, tmp, this->MooeeInv_shift_lc[s], psi, 0, s);
}
// L_m^{-1}
for(int s=0; s<Ls-1; s++){ // Chi[ee] = 1 - sum[s<Ls-1] -leem[s]P_- chi
axpby_ssp_pminus(chi, one, chi, -this->leem[s], chi, Ls-1, s);
}
// U_m^{-1} D^{-1}
for(int s=0; s<Ls-1; s++){
axpby_ssp_pplus(chi, one/this->dee[s], chi, -this->ueem[s]/this->dee[Ls-1], chi, s, Ls-1);
}
axpby_ssp(chi, one/this->dee[Ls-1], chi, czero, chi, Ls-1, Ls-1);
// Apply U^{-1} and add shift term
if(this->pm == 1){ axpby_ssp_pplus(chi, one, chi, this->MooeeInv_shift_norm[Ls-1], tmp, Ls-1, 0); }
else{ axpby_ssp_pminus(chi, one, chi, this->MooeeInv_shift_norm[Ls-1], tmp, Ls-1, 0); }
for(int s=Ls-2; s>=0; s--){
axpby_ssp_pminus(chi, one, chi, -this->uee[s], chi, s, s+1); // chi[Ls]
if(this->pm == 1){ axpby_ssp_pplus(chi, one, chi, this->MooeeInv_shift_norm[s], tmp, s, 0); }
else{ axpby_ssp_pminus(chi, one, chi, this->MooeeInv_shift_norm[s], tmp, s, 0); }
}
}
template<class Impl>
void MobiusEOFAFermion<Impl>::MooeeInvDag(const FermionField& psi, FermionField& chi)
{
if(this->shift != 0.0){ MooeeInvDag_shift(psi,chi); return; }
Coeff_t one(1.0);
Coeff_t czero(0.0);
chi.Checkerboard() = psi.Checkerboard();
int Ls = this->Ls;
// Apply (U^{\prime})^{-dagger}
axpby_ssp(chi, one, psi, czero, psi, 0, 0); // chi[0]=psi[0]
for(int s=1; s<Ls; s++){
axpby_ssp_pminus(chi, one, psi, -conjugate(this->uee[s-1]), chi, s, s-1);
}
// U_m^{-\dagger}
for(int s=0; s<Ls-1; s++){
axpby_ssp_pplus(chi, one, chi, -conjugate(this->ueem[s]), chi, Ls-1, s);
}
// L_m^{-\dagger} D^{-dagger}
for(int s=0; s<Ls-1; s++){
axpby_ssp_pminus(chi, one/conjugate(this->dee[s]), chi, -conjugate(this->leem[s]/this->dee[Ls-1]), chi, s, Ls-1);
}
axpby_ssp(chi, one/conjugate(this->dee[Ls-1]), chi, czero, chi, Ls-1, Ls-1);
// Apply L^{-dagger}
for(int s=Ls-2; s>=0; s--){
axpby_ssp_pplus(chi, one, chi, -conjugate(this->lee[s]), chi, s, s+1); // chi[Ls]
}
}
template<class Impl>
void MobiusEOFAFermion<Impl>::MooeeInvDag_shift(const FermionField& psi, FermionField& chi)
{
Coeff_t one(1.0);
Coeff_t czero(0.0);
chi.Checkerboard() = psi.Checkerboard();
int Ls = this->Ls;
FermionField tmp(psi.Grid());
// Apply (U^{\prime})^{-dagger} and accumulate (MooeeInvDag_shift_lc)_{j} \psi_{j} in tmp[0]
axpby_ssp(chi, one, psi, czero, psi, 0, 0); // chi[0]=psi[0]
axpby_ssp(tmp, czero, tmp, this->MooeeInvDag_shift_lc[0], psi, 0, 0);
for(int s=1; s<Ls; s++){
axpby_ssp_pminus(chi, one, psi, -conjugate(this->uee[s-1]), chi, s, s-1);
axpby_ssp(tmp, one, tmp, this->MooeeInvDag_shift_lc[s], psi, 0, s);
}
// U_m^{-\dagger}
for(int s=0; s<Ls-1; s++){
axpby_ssp_pplus(chi, one, chi, -conjugate(this->ueem[s]), chi, Ls-1, s);
}
// L_m^{-\dagger} D^{-dagger}
for(int s=0; s<Ls-1; s++){
axpby_ssp_pminus(chi, one/conjugate(this->dee[s]), chi, -conjugate(this->leem[s]/this->dee[Ls-1]), chi, s, Ls-1);
}
axpby_ssp(chi, one/conjugate(this->dee[Ls-1]), chi, czero, chi, Ls-1, Ls-1);
// Apply L^{-dagger} and add shift
if(this->pm == 1){ axpby_ssp_pplus(chi, one, chi, this->MooeeInvDag_shift_norm[Ls-1], tmp, Ls-1, 0); }
else{ axpby_ssp_pminus(chi, one, chi, this->MooeeInvDag_shift_norm[Ls-1], tmp, Ls-1, 0); }
for(int s=Ls-2; s>=0; s--){
axpby_ssp_pplus(chi, one, chi, -conjugate(this->lee[s]), chi, s, s+1); // chi[Ls]
if(this->pm == 1){ axpby_ssp_pplus(chi, one, chi, this->MooeeInvDag_shift_norm[s], tmp, s, 0); }
else{ axpby_ssp_pminus(chi, one, chi, this->MooeeInvDag_shift_norm[s], tmp, s, 0); }
}
}
#ifdef MOBIUS_EOFA_DPERP_LINALG
INSTANTIATE_DPERP_MOBIUS_EOFA(WilsonImplF);
INSTANTIATE_DPERP_MOBIUS_EOFA(WilsonImplD);
INSTANTIATE_DPERP_MOBIUS_EOFA(GparityWilsonImplF);
INSTANTIATE_DPERP_MOBIUS_EOFA(GparityWilsonImplD);
INSTANTIATE_DPERP_MOBIUS_EOFA(ZWilsonImplF);
INSTANTIATE_DPERP_MOBIUS_EOFA(ZWilsonImplD);
INSTANTIATE_DPERP_MOBIUS_EOFA(WilsonImplFH);
INSTANTIATE_DPERP_MOBIUS_EOFA(WilsonImplDF);
INSTANTIATE_DPERP_MOBIUS_EOFA(GparityWilsonImplFH);
INSTANTIATE_DPERP_MOBIUS_EOFA(GparityWilsonImplDF);
INSTANTIATE_DPERP_MOBIUS_EOFA(ZWilsonImplFH);
INSTANTIATE_DPERP_MOBIUS_EOFA(ZWilsonImplDF);
#endif
NAMESPACE_END(Grid);
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