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DWF Kernel lanczos working(?)

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This commit is contained in:
Chulwoo Jung
2025-01-16 01:29:56 +00:00
parent 5a4f9bf2e3
commit 2848a9b558
4 changed files with 497 additions and 2 deletions
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6
Grid/algorithms/iterative/ImplicitlyRestartedLanczos.h
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@@ -245,9 +245,10 @@ until convergence
_HermOp(src_n,tmp);
// std::cout << GridLogMessage<< tmp<<std::endl; exit(0);
// std::cout << GridLogIRL << " _HermOp " << norm2(tmp) << std::endl;
RealD vnum = real(innerProduct(src_n,tmp)); // HermOp.
// RealD vnum = real(innerProduct(src_n,tmp)); // HermOp.
RealD vnum = real(innerProduct(tmp,tmp)); // HermOp^2.
RealD vden = norm2(src_n);
RealD na = vnum/vden;
RealD na = std::sqrt(vnum/vden);
if (fabs(evalMaxApprox/na - 1.0) < 0.0001)
i=_MAX_ITER_IRL_MEVAPP_;
evalMaxApprox = na;
@@ -255,6 +256,7 @@ until convergence
src_n = tmp;
}
}
std::cout << GridLogIRL << " Final evalMaxApprox " << evalMaxApprox << std::endl;
std::vector<RealD> lme(Nm);
std::vector<RealD> lme2(Nm);

6
tests/lanczos/LanParams.xml Normal file
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@@ -0,0 +1,6 @@
<?xml version="1.0"?>
<grid>
<LanczosParameters>
<mass>-3.5</mass>
</LanczosParameters>
</grid>

276
tests/lanczos/Test_wilson_DWFKernel.cc Normal file
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@@ -0,0 +1,276 @@
/*************************************************************************************
Grid physics library, www.github.com/paboyle/Grid
Source file: ./tests/Test_dwf_lanczos.cc
Copyright (C) 2015
Author: Chulwoo Jung <chulwoo@bnl.gov>
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 std;
using namespace Grid;
;
typedef WilsonFermionD FermionOp;
typedef typename WilsonFermionD::FermionField FermionField;
RealD AllZero(RealD x) { return 0.; }
namespace Grid {
#if 0
template<typename Field>
class RationalHermOp : public LinearFunction<Field> {
public:
using LinearFunction<Field>::operator();
// OperatorFunction<Field> & _poly;
LinearOperatorBase<Field> &_Linop;
RealD _massDen, _massNum;
FunctionHermOp(LinearOperatorBase<Field>& linop, RealD massDen,RealD massNum)
: _Linop(linop) ,_massDen(massDen),_massNum(massNum) {};
void operator()(const Field& in, Field& out) {
// _poly(_Linop,in,out);
}
};
#endif
template<class Matrix,class Field>
class InvG5LinearOperator : public LinearOperatorBase<Field> {
Matrix &_Mat;
RealD _num;
RealD _Tol;
Integer _MaxIt;
Gamma g5;
public:
InvG5LinearOperator(Matrix &Mat,RealD num): _Mat(Mat),_num(num), _Tol(1e-8),_MaxIt(10000), g5(Gamma::Algebra::Gamma5) {};
// Support for coarsening to a multigrid
void OpDiag (const Field &in, Field &out) {
assert(0);
_Mat.Mdiag(in,out);
}
void OpDir (const Field &in, Field &out,int dir,int disp) {
assert(0);
_Mat.Mdir(in,out,dir,disp);
}
void OpDirAll (const Field &in, std::vector<Field> &out){
assert(0);
_Mat.MdirAll(in,out);
};
void Op (const Field &in, Field &out){
assert(0);
_Mat.M(in,out);
}
void AdjOp (const Field &in, Field &out){
assert(0);
_Mat.Mdag(in,out);
}
void HermOpAndNorm(const Field &in, Field &out,RealD &n1,RealD &n2){
HermOp(in,out);
ComplexD dot = innerProduct(in,out);
n1=real(dot);
n2=norm2(out);
}
void HermOp(const Field &in, Field &out){
Field tmp(in.Grid());
MdagMLinearOperator<Matrix,Field> denom(_Mat);
ConjugateGradient<Field> CG(_Tol,_MaxIt);
_Mat.M(in,tmp);
tmp += _num*in;
out = g5*tmp;
_Mat.Mdag(out,tmp);
CG(denom,tmp,out);
}
};
struct LanczosParameters: Serializable {
GRID_SERIALIZABLE_CLASS_MEMBERS(LanczosParameters,
RealD, mass ,
RealD, ChebyLow,
RealD, ChebyHigh,
Integer, ChebyOrder)
// Integer, StartTrajectory,
// Integer, Trajectories, /* @brief Number of sweeps in this run */
// bool, MetropolisTest,
// Integer, NoMetropolisUntil,
// std::string, StartingType,
// Integer, SW,
// RealD, Kappa,
// IntegratorParameters, MD)
LanczosParameters() {
////////////////////////////// Default values
mass = 0;
// MetropolisTest = true;
// NoMetropolisUntil = 10;
// StartTrajectory = 0;
// SW = 2;
// Trajectories = 10;
// StartingType = "HotStart";
/////////////////////////////////
}
template <class ReaderClass >
LanczosParameters(Reader<ReaderClass> & TheReader){
initialize(TheReader);
}
template < class ReaderClass >
void initialize(Reader<ReaderClass> &TheReader){
// std::cout << GridLogMessage << "Reading HMC\n";
read(TheReader, "HMC", *this);
}
void print_parameters() const {
// std::cout << GridLogMessage << "[HMC parameters] Trajectories : " << Trajectories << "\n";
// std::cout << GridLogMessage << "[HMC parameters] Start trajectory : " << StartTrajectory << "\n";
// std::cout << GridLogMessage << "[HMC parameters] Metropolis test (on/off): " << std::boolalpha << MetropolisTest << "\n";
// std::cout << GridLogMessage << "[HMC parameters] Thermalization trajs : " << NoMetropolisUntil << "\n";
// std::cout << GridLogMessage << "[HMC parameters] Starting type : " << StartingType << "\n";
// MD.print_parameters();
}
};
}
int main(int argc, char** argv) {
Grid_init(&argc, &argv);
GridCartesian* UGrid = SpaceTimeGrid::makeFourDimGrid(
GridDefaultLatt(), GridDefaultSimd(Nd, vComplex::Nsimd()),
GridDefaultMpi());
GridRedBlackCartesian* UrbGrid =
SpaceTimeGrid::makeFourDimRedBlackGrid(UGrid);
GridCartesian* FGrid = UGrid;
GridRedBlackCartesian* FrbGrid = UrbGrid;
// printf("UGrid=%p UrbGrid=%p FGrid=%p FrbGrid=%p\n", UGrid, UrbGrid, FGrid, FrbGrid);
std::vector<int> seeds4({1, 2, 3, 4});
std::vector<int> seeds5({5, 6, 7, 8});
GridParallelRNG RNG5(FGrid);
RNG5.SeedFixedIntegers(seeds5);
GridParallelRNG RNG4(UGrid);
RNG4.SeedFixedIntegers(seeds4);
GridParallelRNG RNG5rb(FrbGrid);
RNG5.SeedFixedIntegers(seeds5);
LatticeGaugeField Umu(UGrid);
// SU<Nc>::HotConfiguration(RNG4, Umu);
FieldMetaData header;
std::string file("./config");
int precision32 = 0;
int tworow = 0;
// NerscIO::writeConfiguration(Umu,file,tworow,precision32);
NerscIO::readConfiguration(Umu,header,file);
/*
std::vector<LatticeColourMatrix> U(4, UGrid);
for (int mu = 0; mu < Nd; mu++) {
U[mu] = PeekIndex<LorentzIndex>(Umu, mu);
}
*/
int Nstop = 10;
int Nk = 20;
int Np = 80;
int Nm = Nk + Np;
int MaxIt = 10000;
RealD resid = 1.0e-5;
RealD mass = -1.0;
LanczosParameters LanParams;
#if 1
{
XmlReader HMCrd("LanParams.xml");
read(HMCrd,"LanczosParameters",LanParams);
}
#else
{
LanParams.mass = mass;
}
#endif
std::cout << GridLogMessage<< LanParams <<std::endl;
{
XmlWriter HMCwr("LanParams.xml.out");
write(HMCwr,"LanczosParameters",LanParams);
}
mass=LanParams.mass;
while ( mass > - 5.0){
FermionOp WilsonOperator(Umu,*FGrid,*FrbGrid,2.+mass);
InvG5LinearOperator<FermionOp,LatticeFermion> HermOp(WilsonOperator,-2.); /// <-----
//SchurDiagTwoOperator<FermionOp,FermionField> HermOp(WilsonOperator);
// Gamma5HermitianLinearOperator <FermionOp,LatticeFermion> HermOp2(WilsonOperator); /// <-----
std::vector<double> Coeffs{0, 1.};
Polynomial<FermionField> PolyX(Coeffs);
// Chebyshev<FermionField> Cheby(LanParams.ChebyLow,LanParams.ChebyHigh,LanParams.ChebyOrder);
// FunctionHermOp<FermionField> OpCheby(Cheby,HermOp);
// InvHermOp<FermionField> Op(WilsonOperator,HermOp);
PlainHermOp<FermionField> Op (HermOp);
// PlainHermOp<FermionField> Op2 (HermOp2);
ImplicitlyRestartedLanczos<FermionField> IRL(Op, Op, Nstop, Nk, Nm, resid, MaxIt);
std::vector<RealD> eval(Nm);
FermionField src(FGrid);
gaussian(RNG5, src);
std::vector<FermionField> evec(Nm, FGrid);
for (int i = 0; i < 1; i++) {
std::cout << i << " / " << Nm << " grid pointer " << evec[i].Grid()
<< std::endl;
};
int Nconv;
IRL.calc(eval, evec, src, Nconv);
std::cout << mass <<" : " << eval << std::endl;
Gamma g5(Gamma::Algebra::Gamma5) ;
ComplexD dot;
FermionField tmp(FGrid);
for (int i = 0; i < Nstop ; i++) {
tmp = g5*evec[i];
dot = innerProduct(tmp,evec[i]);
std::cout << mass << " : " << eval[i] << " " << real(dot) << " " << imag(dot) << std::endl ;
}
src = evec[0]+evec[1]+evec[2];
mass += -0.1;
}
Grid_finalize();
}

211
tests/lanczos/Test_wilson_specflow.cc Normal file
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@@ -0,0 +1,211 @@
/*************************************************************************************
Grid physics library, www.github.com/paboyle/Grid
Source file: ./tests/Test_dwf_lanczos.cc
Copyright (C) 2015
Author: Chulwoo Jung <chulwoo@bnl.gov>
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 std;
using namespace Grid;
;
typedef WilsonFermionD FermionOp;
typedef typename WilsonFermionD::FermionField FermionField;
RealD AllZero(RealD x) { return 0.; }
namespace Grid {
struct LanczosParameters: Serializable {
GRID_SERIALIZABLE_CLASS_MEMBERS(LanczosParameters,
RealD, mass ,
RealD, ChebyLow,
RealD, ChebyHigh,
Integer, ChebyOrder)
// Integer, StartTrajectory,
// Integer, Trajectories, /* @brief Number of sweeps in this run */
// bool, MetropolisTest,
// Integer, NoMetropolisUntil,
// std::string, StartingType,
// Integer, SW,
// RealD, Kappa,
// IntegratorParameters, MD)
LanczosParameters() {
////////////////////////////// Default values
mass = 0;
// MetropolisTest = true;
// NoMetropolisUntil = 10;
// StartTrajectory = 0;
// SW = 2;
// Trajectories = 10;
// StartingType = "HotStart";
/////////////////////////////////
}
template <class ReaderClass >
LanczosParameters(Reader<ReaderClass> & TheReader){
initialize(TheReader);
}
template < class ReaderClass >
void initialize(Reader<ReaderClass> &TheReader){
// std::cout << GridLogMessage << "Reading HMC\n";
read(TheReader, "HMC", *this);
}
void print_parameters() const {
// std::cout << GridLogMessage << "[HMC parameters] Trajectories : " << Trajectories << "\n";
// std::cout << GridLogMessage << "[HMC parameters] Start trajectory : " << StartTrajectory << "\n";
// std::cout << GridLogMessage << "[HMC parameters] Metropolis test (on/off): " << std::boolalpha << MetropolisTest << "\n";
// std::cout << GridLogMessage << "[HMC parameters] Thermalization trajs : " << NoMetropolisUntil << "\n";
// std::cout << GridLogMessage << "[HMC parameters] Starting type : " << StartingType << "\n";
// MD.print_parameters();
}
};
}
int main(int argc, char** argv) {
Grid_init(&argc, &argv);
GridCartesian* UGrid = SpaceTimeGrid::makeFourDimGrid(
GridDefaultLatt(), GridDefaultSimd(Nd, vComplex::Nsimd()),
GridDefaultMpi());
GridRedBlackCartesian* UrbGrid =
SpaceTimeGrid::makeFourDimRedBlackGrid(UGrid);
GridCartesian* FGrid = UGrid;
GridRedBlackCartesian* FrbGrid = UrbGrid;
// printf("UGrid=%p UrbGrid=%p FGrid=%p FrbGrid=%p\n", UGrid, UrbGrid, FGrid, FrbGrid);
std::vector<int> seeds4({1, 2, 3, 4});
std::vector<int> seeds5({5, 6, 7, 8});
GridParallelRNG RNG5(FGrid);
RNG5.SeedFixedIntegers(seeds5);
GridParallelRNG RNG4(UGrid);
RNG4.SeedFixedIntegers(seeds4);
GridParallelRNG RNG5rb(FrbGrid);
RNG5.SeedFixedIntegers(seeds5);
LatticeGaugeField Umu(UGrid);
// SU<Nc>::HotConfiguration(RNG4, Umu);
FieldMetaData header;
std::string file("./config");
int precision32 = 0;
int tworow = 0;
// NerscIO::writeConfiguration(Umu,file,tworow,precision32);
NerscIO::readConfiguration(Umu,header,file);
/*
std::vector<LatticeColourMatrix> U(4, UGrid);
for (int mu = 0; mu < Nd; mu++) {
U[mu] = PeekIndex<LorentzIndex>(Umu, mu);
}
*/
int Nstop = 10;
int Nk = 20;
int Np = 80;
int Nm = Nk + Np;
int MaxIt = 10000;
RealD resid = 1.0e-5;
RealD mass = -1.0;
LanczosParameters LanParams;
#if 1
{
XmlReader HMCrd("LanParams.xml");
read(HMCrd,"LanczosParameters",LanParams);
}
#else
{
LanParams.mass = mass;
}
#endif
std::cout << GridLogMessage<< LanParams <<std::endl;
{
XmlWriter HMCwr("LanParams.xml.out");
write(HMCwr,"LanczosParameters",LanParams);
}
mass=LanParams.mass;
while ( mass > - 5.0){
FermionOp WilsonOperator(Umu,*FGrid,*FrbGrid,mass);
MdagMLinearOperator<FermionOp,FermionField> HermOp(WilsonOperator); /// <-----
//SchurDiagTwoOperator<FermionOp,FermionField> HermOp(WilsonOperator);
Gamma5HermitianLinearOperator <FermionOp,LatticeFermion> HermOp2(WilsonOperator); /// <-----
std::vector<double> Coeffs{0, 1.};
Polynomial<FermionField> PolyX(Coeffs);
// Chebyshev<FermionField> Cheby(0.5, 60., 31);
// RealD, ChebyLow,
// RealD, ChebyHigh,
// Integer, ChebyOrder)
Chebyshev<FermionField> Cheby(LanParams.ChebyLow,LanParams.ChebyHigh,LanParams.ChebyOrder);
FunctionHermOp<FermionField> OpCheby(Cheby,HermOp);
PlainHermOp<FermionField> Op (HermOp);
PlainHermOp<FermionField> Op2 (HermOp2);
ImplicitlyRestartedLanczos<FermionField> IRL(OpCheby, Op2, Nstop, Nk, Nm, resid, MaxIt);
std::vector<RealD> eval(Nm);
FermionField src(FGrid);
gaussian(RNG5, src);
std::vector<FermionField> evec(Nm, FGrid);
for (int i = 0; i < 1; i++) {
std::cout << i << " / " << Nm << " grid pointer " << evec[i].Grid()
<< std::endl;
};
int Nconv;
IRL.calc(eval, evec, src, Nconv);
std::cout << mass <<" : " << eval << std::endl;
Gamma g5(Gamma::Algebra::Gamma5) ;
ComplexD dot;
FermionField tmp(FGrid);
for (int i = 0; i < Nstop ; i++) {
tmp = g5*evec[i];
dot = innerProduct(tmp,evec[i]);
std::cout << mass << " : " << eval[i] << " " << real(dot) << " " << imag(dot) << std::endl ;
}
src = evec[0]+evec[1]+evec[2];
mass += -0.1;
}
Grid_finalize();
}