mirror of
https://github.com/paboyle/Grid.git
synced 2025-11-03 21:44:33 +00:00
Merge remote-tracking branch 'origin/develop' into hisq_fat_links
This commit is contained in:
david clarke
307
tests/core/Test_fft_pf.cc
Normal file
307
tests/core/Test_fft_pf.cc
Normal file
@@ -0,0 +1,307 @@
|
||||
/*************************************************************************************
|
||||
|
||||
grid` physics library, www.github.com/paboyle/Grid
|
||||
|
||||
Source file: ./tests/Test_cshift.cc
|
||||
|
||||
Copyright (C) 2015
|
||||
|
||||
Author: Azusa Yamaguchi <ayamaguc@staffmail.ed.ac.uk>
|
||||
Author: Peter Boyle <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 */
|
||||
#include <Grid/Grid.h>
|
||||
|
||||
using namespace Grid;
|
||||
|
||||
int main (int argc, char ** argv)
|
||||
{
|
||||
Grid_init(&argc,&argv);
|
||||
|
||||
int threads = GridThread::GetThreads();
|
||||
std::cout<<GridLogMessage << "Grid is setup to use "<<threads<<" threads"<<std::endl;
|
||||
|
||||
Coordinate latt_size = GridDefaultLatt();
|
||||
Coordinate simd_layout( { vComplexD::Nsimd(),1,1,1});
|
||||
Coordinate mpi_layout = GridDefaultMpi();
|
||||
|
||||
int vol = 1;
|
||||
for(int d=0;d<latt_size.size();d++){
|
||||
vol = vol * latt_size[d];
|
||||
}
|
||||
GridCartesian GRID(latt_size,simd_layout,mpi_layout);
|
||||
GridRedBlackCartesian RBGRID(&GRID);
|
||||
|
||||
ComplexD ci(0.0,1.0);
|
||||
|
||||
std::vector<int> seeds({1,2,3,4});
|
||||
GridSerialRNG sRNG; sRNG.SeedFixedIntegers(seeds); // naughty seeding
|
||||
GridParallelRNG pRNG(&GRID);
|
||||
pRNG.SeedFixedIntegers(seeds);
|
||||
|
||||
LatticeGaugeFieldD Umu(&GRID);
|
||||
|
||||
SU<Nc>::ColdConfiguration(pRNG,Umu); // Unit gauge
|
||||
|
||||
////////////////////////////////////////////////////
|
||||
// PF prop
|
||||
////////////////////////////////////////////////////
|
||||
LatticeFermionD src(&GRID);
|
||||
|
||||
gaussian(pRNG,src);
|
||||
#if 1
|
||||
Coordinate point(4,0);
|
||||
src=Zero();
|
||||
SpinColourVectorD ferm; gaussian(sRNG,ferm);
|
||||
pokeSite(ferm,src,point);
|
||||
#endif
|
||||
|
||||
{
|
||||
std::cout<<"****************************************"<<std::endl;
|
||||
std::cout << "Testing PartialFraction Hw kernel Mom space 4d propagator \n";
|
||||
std::cout<<"****************************************"<<std::endl;
|
||||
|
||||
// LatticeFermionD src(&GRID); gaussian(pRNG,src);
|
||||
LatticeFermionD tmp(&GRID);
|
||||
LatticeFermionD ref(&GRID);
|
||||
LatticeFermionD diff(&GRID);
|
||||
|
||||
const int Ls=48+1;
|
||||
GridCartesian * FGrid = SpaceTimeGrid::makeFiveDimGrid(Ls,&GRID);
|
||||
GridRedBlackCartesian * FrbGrid = SpaceTimeGrid::makeFiveDimRedBlackGrid(Ls,&GRID);
|
||||
|
||||
RealD mass=0.1;
|
||||
RealD M5 =0.8;
|
||||
OverlapWilsonPartialFractionZolotarevFermionD Dov(Umu,*FGrid,*FrbGrid,GRID,RBGRID,mass,M5,0.001,8.0);
|
||||
|
||||
// Momentum space prop
|
||||
std::cout << " Solving by FFT and Feynman rules" <<std::endl;
|
||||
bool fiveD = false; //calculate 4d free propagator
|
||||
|
||||
std::cout << " Free propagator " <<std::endl;
|
||||
Dov.FreePropagator(src,ref,mass) ;
|
||||
std::cout << " Free propagator norm "<< norm2(ref) <<std::endl;
|
||||
|
||||
Gamma G5(Gamma::Algebra::Gamma5);
|
||||
|
||||
LatticeFermionD src5(FGrid); src5=Zero();
|
||||
LatticeFermionD tmp5(FGrid);
|
||||
LatticeFermionD result5(FGrid); result5=Zero();
|
||||
LatticeFermionD result4(&GRID);
|
||||
const int sdir=0;
|
||||
|
||||
////////////////////////////////////////////////////////////////////////
|
||||
// Import
|
||||
////////////////////////////////////////////////////////////////////////
|
||||
std::cout << " Free propagator Import "<< norm2(src) <<std::endl;
|
||||
Dov.ImportPhysicalFermionSource (src,src5);
|
||||
std::cout << " Free propagator Imported "<< norm2(src5) <<std::endl;
|
||||
|
||||
////////////////////////////////////////////////////////////////////////
|
||||
// Conjugate gradient on normal equations system
|
||||
////////////////////////////////////////////////////////////////////////
|
||||
std::cout << " Solving by Conjugate Gradient (CGNE)" <<std::endl;
|
||||
Dov.Mdag(src5,tmp5);
|
||||
src5=tmp5;
|
||||
MdagMLinearOperator<OverlapWilsonPartialFractionZolotarevFermionD,LatticeFermionD> HermOp(Dov);
|
||||
ConjugateGradient<LatticeFermionD> CG(1.0e-8,10000);
|
||||
CG(HermOp,src5,result5);
|
||||
////////////////////////////////////////////////////////////////////////
|
||||
// Domain wall physical field propagator
|
||||
////////////////////////////////////////////////////////////////////////
|
||||
Dov.ExportPhysicalFermionSolution(result5,result4);
|
||||
|
||||
// From DWF4d.pdf :
|
||||
//
|
||||
// Dov_pf = 2/(1-m) D_cayley_ovlap [ Page 43 ]
|
||||
// Dinv_cayley_ovlap = 2/(1-m) Dinv_pf
|
||||
// Dinv_cayley_surface =1/(1-m) ( Dinv_cayley_ovlap - 1 ) => 2/(1-m)^2 Dinv_pf - 1/(1-m) * src [ Eq.2.67 ]
|
||||
|
||||
RealD scale = 2.0/(1.0-mass)/(1.0-mass);
|
||||
result4 = result4 * scale;
|
||||
result4 = result4 - src*(1.0/(1.0-mass)); // Subtract contact term
|
||||
DumpSliceNorm("Src",src);
|
||||
DumpSliceNorm("Grid",result4);
|
||||
DumpSliceNorm("Fourier",ref);
|
||||
|
||||
std::cout << "Dov result4 "<<norm2(result4)<<std::endl;
|
||||
std::cout << "Dov ref "<<norm2(ref)<<std::endl;
|
||||
|
||||
diff = result4- ref;
|
||||
DumpSliceNorm("diff ",diff);
|
||||
|
||||
}
|
||||
|
||||
////////////////////////////////////////////////////
|
||||
// Dwf prop
|
||||
////////////////////////////////////////////////////
|
||||
{
|
||||
std::cout<<"****************************************"<<std::endl;
|
||||
std::cout << "Testing Dov(Hw) Mom space 4d propagator \n";
|
||||
std::cout<<"****************************************"<<std::endl;
|
||||
|
||||
LatticeFermionD tmp(&GRID);
|
||||
LatticeFermionD ref(&GRID);
|
||||
LatticeFermionD diff(&GRID);
|
||||
|
||||
const int Ls=48;
|
||||
GridCartesian * FGrid = SpaceTimeGrid::makeFiveDimGrid(Ls,&GRID);
|
||||
GridRedBlackCartesian * FrbGrid = SpaceTimeGrid::makeFiveDimRedBlackGrid(Ls,&GRID);
|
||||
|
||||
RealD mass=0.1;
|
||||
RealD M5 =0.8;
|
||||
|
||||
OverlapWilsonCayleyTanhFermionD Dov(Umu,*FGrid,*FrbGrid,GRID,RBGRID,mass,M5,1.0);
|
||||
|
||||
// Momentum space prop
|
||||
std::cout << " Solving by FFT and Feynman rules" <<std::endl;
|
||||
Dov.FreePropagator(src,ref,mass) ;
|
||||
|
||||
Gamma G5(Gamma::Algebra::Gamma5);
|
||||
|
||||
LatticeFermionD src5(FGrid); src5=Zero();
|
||||
LatticeFermionD tmp5(FGrid);
|
||||
LatticeFermionD result5(FGrid); result5=Zero();
|
||||
LatticeFermionD result4(&GRID);
|
||||
const int sdir=0;
|
||||
|
||||
////////////////////////////////////////////////////////////////////////
|
||||
// Domain wall physical field source; need D_minus
|
||||
////////////////////////////////////////////////////////////////////////
|
||||
/*
|
||||
chi_5[0] = chiralProjectPlus(chi);
|
||||
chi_5[Ls-1]= chiralProjectMinus(chi);
|
||||
*/
|
||||
tmp = (src + G5*src)*0.5; InsertSlice(tmp,src5, 0,sdir);
|
||||
tmp = (src - G5*src)*0.5; InsertSlice(tmp,src5,Ls-1,sdir);
|
||||
|
||||
////////////////////////////////////////////////////////////////////////
|
||||
// Conjugate gradient on normal equations system
|
||||
////////////////////////////////////////////////////////////////////////
|
||||
std::cout << " Solving by Conjugate Gradient (CGNE)" <<std::endl;
|
||||
Dov.Dminus(src5,tmp5);
|
||||
src5=tmp5;
|
||||
Dov.Mdag(src5,tmp5);
|
||||
src5=tmp5;
|
||||
MdagMLinearOperator<OverlapWilsonCayleyTanhFermionD,LatticeFermionD> HermOp(Dov);
|
||||
ConjugateGradient<LatticeFermionD> CG(1.0e-16,10000);
|
||||
CG(HermOp,src5,result5);
|
||||
|
||||
////////////////////////////////////////////////////////////////////////
|
||||
// Domain wall physical field propagator
|
||||
////////////////////////////////////////////////////////////////////////
|
||||
/*
|
||||
psi = chiralProjectMinus(psi_5[0]);
|
||||
psi += chiralProjectPlus(psi_5[Ls-1]);
|
||||
*/
|
||||
ExtractSlice(tmp,result5,0 ,sdir); result4 = (tmp-G5*tmp)*0.5;
|
||||
ExtractSlice(tmp,result5,Ls-1,sdir); result4 = result4+(tmp+G5*tmp)*0.5;
|
||||
|
||||
std::cout << " Taking difference" <<std::endl;
|
||||
std::cout << "Dov result4 "<<norm2(result4)<<std::endl;
|
||||
std::cout << "Dov ref "<<norm2(ref)<<std::endl;
|
||||
DumpSliceNorm("Grid",result4);
|
||||
DumpSliceNorm("Fourier",ref);
|
||||
diff = ref - result4;
|
||||
std::cout << "result - ref "<<norm2(diff)<<std::endl;
|
||||
|
||||
DumpSliceNorm("diff",diff);
|
||||
|
||||
}
|
||||
|
||||
|
||||
{
|
||||
std::cout<<"****************************************"<<std::endl;
|
||||
std::cout << "Testing PartialFraction Hw kernel Mom space 4d propagator with q\n";
|
||||
std::cout<<"****************************************"<<std::endl;
|
||||
|
||||
// LatticeFermionD src(&GRID); gaussian(pRNG,src);
|
||||
LatticeFermionD tmp(&GRID);
|
||||
LatticeFermionD ref(&GRID);
|
||||
LatticeFermionD diff(&GRID);
|
||||
|
||||
const int Ls=48+1;
|
||||
GridCartesian * FGrid = SpaceTimeGrid::makeFiveDimGrid(Ls,&GRID);
|
||||
GridRedBlackCartesian * FrbGrid = SpaceTimeGrid::makeFiveDimRedBlackGrid(Ls,&GRID);
|
||||
|
||||
RealD mass=0.1;
|
||||
RealD M5 =0.8;
|
||||
OverlapWilsonPartialFractionZolotarevFermionD Dov(Umu,*FGrid,*FrbGrid,GRID,RBGRID,mass,M5,0.001,8.0);
|
||||
|
||||
// Momentum space prop
|
||||
std::cout << " Solving by FFT and Feynman rules" <<std::endl;
|
||||
bool fiveD = false; //calculate 4d free propagator
|
||||
|
||||
std::cout << " Free propagator " <<std::endl;
|
||||
Dov.FreePropagator(src,ref,mass) ;
|
||||
std::cout << " Free propagator norm "<< norm2(ref) <<std::endl;
|
||||
|
||||
Gamma G5(Gamma::Algebra::Gamma5);
|
||||
|
||||
LatticeFermionD src5(FGrid); src5=Zero();
|
||||
LatticeFermionD tmp5(FGrid);
|
||||
LatticeFermionD result5(FGrid); result5=Zero();
|
||||
LatticeFermionD result4(&GRID);
|
||||
const int sdir=0;
|
||||
|
||||
////////////////////////////////////////////////////////////////////////
|
||||
// Import
|
||||
////////////////////////////////////////////////////////////////////////
|
||||
std::cout << " Free propagator Import "<< norm2(src) <<std::endl;
|
||||
Dov.ImportPhysicalFermionSource (src,src5);
|
||||
std::cout << " Free propagator Imported "<< norm2(src5) <<std::endl;
|
||||
|
||||
////////////////////////////////////////////////////////////////////////
|
||||
// Conjugate gradient on normal equations system
|
||||
////////////////////////////////////////////////////////////////////////
|
||||
std::cout << " Solving by Conjugate Gradient (CGNE)" <<std::endl;
|
||||
Dov.Mdag(src5,tmp5);
|
||||
src5=tmp5;
|
||||
MdagMLinearOperator<OverlapWilsonPartialFractionZolotarevFermionD,LatticeFermionD> HermOp(Dov);
|
||||
ConjugateGradient<LatticeFermionD> CG(1.0e-8,10000);
|
||||
CG(HermOp,src5,result5);
|
||||
////////////////////////////////////////////////////////////////////////
|
||||
// Domain wall physical field propagator
|
||||
////////////////////////////////////////////////////////////////////////
|
||||
Dov.ExportPhysicalFermionSolution(result5,result4);
|
||||
|
||||
// From DWF4d.pdf :
|
||||
//
|
||||
// Dov_pf = 2/(1-m) D_cayley_ovlap [ Page 43 ]
|
||||
// Dinv_cayley_ovlap = 2/(1-m) Dinv_pf
|
||||
// Dinv_cayley_surface =1/(1-m) ( Dinv_cayley_ovlap - 1 ) => 2/(1-m)^2 Dinv_pf - 1/(1-m) * src [ Eq.2.67 ]
|
||||
|
||||
RealD scale = 2.0/(1.0-mass)/(1.0-mass);
|
||||
result4 = result4 * scale;
|
||||
result4 = result4 - src*(1.0/(1.0-mass)); // Subtract contact term
|
||||
DumpSliceNorm("Src",src);
|
||||
DumpSliceNorm("Grid",result4);
|
||||
DumpSliceNorm("Fourier",ref);
|
||||
|
||||
std::cout << "Dov result4 "<<norm2(result4)<<std::endl;
|
||||
std::cout << "Dov ref "<<norm2(ref)<<std::endl;
|
||||
|
||||
diff = result4- ref;
|
||||
DumpSliceNorm("diff ",diff);
|
||||
|
||||
}
|
||||
|
||||
|
||||
Grid_finalize();
|
||||
}
|
||||
Reference in New Issue
Block a user