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https://github.com/paboyle/Grid.git
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Added explicit shift before pulling
This commit is contained in:
Chulwoo Jung
@@ -105,255 +105,47 @@ template <class T> void writeFile(T& in, std::string const fname){
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typedef WilsonFermionD WilsonOp;
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typedef typename WilsonFermionD::FermionField FermionField;
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#if 0
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// Hermitize a DWF operator by squaring it
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template<class Matrix,class Field>
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class SquaredLinearOperator : public LinearOperatorBase<Field> {
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public:
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class InvertNonHermitianLinearOperator : public LinearOperatorBase<Field> {
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Matrix &_Mat;
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public:
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SquaredLinearOperator(Matrix &Mat): _Mat(Mat) {};
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void OpDiag (const Field &in, Field &out) { assert(0); }
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void OpDir (const Field &in, Field &out,int dir,int disp) { assert(0); }
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void OpDirAll (const Field &in, std::vector<Field> &out){ assert(0); };
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void Op (const Field &in, Field &out){
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// std::cout << "Op is overloaded as HermOp" << std::endl;
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HermOp(in, out);
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}
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void AdjOp (const Field &in, Field &out){
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HermOp(in, out);
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}
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void _Op (const Field &in, Field &out){
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// std::cout << "Op: M "<<std::endl;
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_Mat.M(in, out);
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}
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void _AdjOp (const Field &in, Field &out){
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// std::cout << "AdjOp: Mdag "<<std::endl;
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_Mat.Mdag(in, out);
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}
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void HermOpAndNorm(const Field &in, Field &out,RealD &n1,RealD &n2){ assert(0); }
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void HermOp(const Field &in, Field &out){
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// std::cout << "HermOp: Mdag M Mdag M"<<std::endl;
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Field tmp(in.Grid());
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_Op(in,tmp);
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_AdjOp(tmp,out);
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}
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};
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template<class Matrix,class Field>
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class PVdagMLinearOperator : public LinearOperatorBase<Field> {
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Matrix &_Mat;
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Matrix &_PV;
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RealD _stp;
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public:
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PVdagMLinearOperator(Matrix &Mat,Matrix &PV): _Mat(Mat),_PV(PV){};
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void OpDiag (const Field &in, Field &out) { assert(0); }
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void OpDir (const Field &in, Field &out,int dir,int disp) { assert(0); }
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void OpDirAll (const Field &in, std::vector<Field> &out){ assert(0); };
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InvertNonHermitianLinearOperator(Matrix &Mat,RealD stp=1e-8): _Mat(Mat),_stp(stp){};
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// Support for coarsening to a multigrid
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void OpDiag (const Field &in, Field &out) {
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// _Mat.Mdiag(in,out);
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// out = out + shift*in;
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assert(0);
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}
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void OpDir (const Field &in, Field &out,int dir,int disp) {
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// _Mat.Mdir(in,out,dir,disp);
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assert(0);
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}
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void OpDirAll (const Field &in, std::vector<Field> &out){
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// _Mat.MdirAll(in,out);
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assert(0);
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};
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void Op (const Field &in, Field &out){
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std::cout << "Op: PVdag M "<<std::endl;
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Field tmp(in.Grid());
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_Mat.M(in,tmp);
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_PV.Mdag(tmp,out);
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// _Mat.M(in,out);
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// RealD mass=-shift;
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// WilsonCloverFermionD Dw(Umu, Grid, RBGrid, mass, csw_r, csw_t);
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NonHermitianLinearOperator<Matrix,Field> HermOp(_Mat);
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BiCGSTAB<Field> CG(_stp,10000);
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CG(HermOp,in,out);
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// out = out + shift * in;
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}
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void AdjOp (const Field &in, Field &out){
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std::cout << "AdjOp: Mdag PV "<<std::endl;
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Field tmp(in.Grid());
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_PV.M(in,tmp);
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_Mat.Mdag(tmp,out);
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_Mat.Mdag(in,out);
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// out = out + shift * in;
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}
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void HermOpAndNorm(const Field &in, Field &out,RealD &n1,RealD &n2){
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assert(0);
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}
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void HermOpAndNorm(const Field &in, Field &out,RealD &n1,RealD &n2){ assert(0); }
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void HermOp(const Field &in, Field &out){
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std::cout << "HermOp: Mdag PV PVdag M"<<std::endl;
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Field tmp(in.Grid());
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// _Mat.M(in,tmp);
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// _PV.Mdag(tmp,out);
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// _PV.M(out,tmp);
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// _Mat.Mdag(tmp,out);
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Op(in,tmp);
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AdjOp(tmp,out);
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// std::cout << "HermOp done "<<norm2(out)<<std::endl;
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assert(0);
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}
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};
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template<class Matrix,class Field>
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class ShiftedPVdagMLinearOperator : public LinearOperatorBase<Field> {
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Matrix &_Mat;
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Matrix &_PV;
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RealD shift;
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public:
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ShiftedPVdagMLinearOperator(RealD _shift,Matrix &Mat,Matrix &PV): shift(_shift),_Mat(Mat),_PV(PV){};
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void OpDiag (const Field &in, Field &out) { assert(0); }
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void OpDir (const Field &in, Field &out,int dir,int disp) { assert(0); }
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void OpDirAll (const Field &in, std::vector<Field> &out){ assert(0); };
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void Op (const Field &in, Field &out){
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std::cout << "Op: PVdag M "<<std::endl;
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Field tmp(in.Grid());
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_Mat.M(in,tmp);
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_PV.Mdag(tmp,out);
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out = out + shift * in;
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}
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void AdjOp (const Field &in, Field &out){
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std::cout << "AdjOp: Mdag PV "<<std::endl;
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Field tmp(in.Grid());
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_PV.M(tmp,out);
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_Mat.Mdag(in,tmp);
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out = out + shift * in;
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}
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void HermOpAndNorm(const Field &in, Field &out,RealD &n1,RealD &n2){ assert(0); }
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void HermOp(const Field &in, Field &out){
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std::cout << "HermOp: Mdag PV PVdag M"<<std::endl;
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Field tmp(in.Grid());
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Op(in,tmp);
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AdjOp(tmp,out);
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}
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};
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template<class Matrix, class Field>
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class ShiftedComplexPVdagMLinearOperator : public LinearOperatorBase<Field> {
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Matrix &_Mat;
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Matrix &_PV;
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ComplexD shift;
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public:
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ShiftedComplexPVdagMLinearOperator(ComplexD _shift,Matrix &Mat,Matrix &PV): shift(_shift),_Mat(Mat),_PV(PV){};
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void OpDiag (const Field &in, Field &out) { assert(0); }
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void OpDir (const Field &in, Field &out,int dir,int disp) { assert(0); }
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void OpDirAll (const Field &in, std::vector<Field> &out){ assert(0); };
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void Op (const Field &in, Field &out){
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std::cout << "Op: PVdag M "<<std::endl;
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Field tmp(in.Grid());
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_Mat.M(in,tmp);
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_PV.Mdag(tmp,out);
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out = out + shift * in;
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}
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void AdjOp (const Field &in, Field &out){
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std::cout << "AdjOp: Mdag PV "<<std::endl;
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Field tmp(in.Grid());
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_PV.M(tmp,out);
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_Mat.Mdag(in,tmp);
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out = out + shift * in;
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}
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void HermOpAndNorm(const Field &in, Field &out,RealD &n1,RealD &n2){ assert(0); }
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void HermOp(const Field &in, Field &out){
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std::cout << "HermOp: Mdag PV PVdag M"<<std::endl;
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Field tmp(in.Grid());
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Op(in,tmp);
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AdjOp(tmp,out);
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}
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void resetShift(ComplexD newShift) {
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shift = newShift;
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}
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};
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template<class Fobj,class CComplex,int nbasis>
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class MGPreconditioner : public LinearFunction< Lattice<Fobj> > {
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public:
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using LinearFunction<Lattice<Fobj> >::operator();
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typedef Aggregation<Fobj,CComplex,nbasis> Aggregates;
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typedef typename Aggregation<Fobj,CComplex,nbasis>::FineField FineField;
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typedef typename Aggregation<Fobj,CComplex,nbasis>::CoarseVector CoarseVector;
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typedef typename Aggregation<Fobj,CComplex,nbasis>::CoarseMatrix CoarseMatrix;
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typedef LinearOperatorBase<FineField> FineOperator;
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typedef LinearFunction <FineField> FineSmoother;
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typedef LinearOperatorBase<CoarseVector> CoarseOperator;
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typedef LinearFunction <CoarseVector> CoarseSolver;
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Aggregates & _Aggregates;
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FineOperator & _FineOperator;
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FineSmoother & _PreSmoother;
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FineSmoother & _PostSmoother;
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CoarseOperator & _CoarseOperator;
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CoarseSolver & _CoarseSolve;
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int level; void Level(int lv) {level = lv; };
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MGPreconditioner(Aggregates &Agg,
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FineOperator &Fine,
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FineSmoother &PreSmoother,
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FineSmoother &PostSmoother,
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CoarseOperator &CoarseOperator_,
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CoarseSolver &CoarseSolve_)
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: _Aggregates(Agg),
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_FineOperator(Fine),
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_PreSmoother(PreSmoother),
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_PostSmoother(PostSmoother),
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_CoarseOperator(CoarseOperator_),
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_CoarseSolve(CoarseSolve_),
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level(1) { }
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virtual void operator()(const FineField &in, FineField & out)
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{
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GridBase *CoarseGrid = _Aggregates.CoarseGrid;
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// auto CoarseGrid = _CoarseOperator.Grid();
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CoarseVector Csrc(CoarseGrid);
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CoarseVector Csol(CoarseGrid);
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FineField vec1(in.Grid());
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FineField vec2(in.Grid());
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std::cout<<GridLogMessage << "Calling PreSmoother " <<std::endl;
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// std::cout<<GridLogMessage << "Calling PreSmoother input residual "<<norm2(in) <<std::endl;
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double t;
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// Fine Smoother
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// out = in;
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out = Zero();
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t=-usecond();
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_PreSmoother(in,out);
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t+=usecond();
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std::cout<<GridLogMessage << "PreSmoother took "<< t/1000.0<< "ms" <<std::endl;
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// Update the residual
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_FineOperator.Op(out,vec1); sub(vec1, in ,vec1);
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// std::cout<<GridLogMessage <<"Residual-1 now " <<norm2(vec1)<<std::endl;
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// Fine to Coarse
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t=-usecond();
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_Aggregates.ProjectToSubspace (Csrc,vec1);
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t+=usecond();
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std::cout<<GridLogMessage << "Project to coarse took "<< t/1000.0<< "ms" <<std::endl;
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// Coarse correction
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t=-usecond();
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Csol = Zero();
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_CoarseSolve(Csrc,Csol);
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//Csol=Zero();
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t+=usecond();
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std::cout<<GridLogMessage << "Coarse solve took "<< t/1000.0<< "ms" <<std::endl;
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// Coarse to Fine
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t=-usecond();
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// _CoarseOperator.PromoteFromSubspace(_Aggregates,Csol,vec1);
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_Aggregates.PromoteFromSubspace(Csol,vec1);
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add(out,out,vec1);
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t+=usecond();
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std::cout<<GridLogMessage << "Promote to this level took "<< t/1000.0<< "ms" <<std::endl;
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// Residual
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_FineOperator.Op(out,vec1); sub(vec1 ,in , vec1);
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// std::cout<<GridLogMessage <<"Residual-2 now " <<norm2(vec1)<<std::endl;
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// Fine Smoother
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t=-usecond();
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// vec2=vec1;
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vec2=Zero();
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_PostSmoother(vec1,vec2);
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t+=usecond();
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std::cout<<GridLogMessage << "PostSmoother took "<< t/1000.0<< "ms" <<std::endl;
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add( out,out,vec2);
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std::cout<<GridLogMessage << "Done " <<std::endl;
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}
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};
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#endif
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template<class Field>
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void testSchurFromHess(Arnoldi<Field>& Arn, Field& src, int Nlarge, int Nm, int Nk) {
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@@ -500,6 +292,7 @@ int main (int argc, char ** argv)
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NonHermitianLinearOperator<WilsonOp,FermionField> Dwilson(WilsonOperator); /// <-----
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InvertNonHermitianLinearOperator<WilsonOp,FermionField> Iwilson(WilsonOperator); /// <-----
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MdagMLinearOperator<WilsonOp,FermionField> HermOp(WilsonOperator); /// <-----
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Gamma5HermitianLinearOperator <WilsonOp,LatticeFermion> HermOp2(WilsonOperator); /// <----
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@@ -538,11 +331,14 @@ int main (int argc, char ** argv)
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// KrySchur(src, maxIter, Nm, Nk, Nstop);
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// KrylovSchur KrySchur (HermOp2, UGrid, resid,EvalNormSmall);
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// Hacked, really EvalImagSmall
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KrylovSchur KrySchur (Dwilson, UGrid, resid,EvalImNormSmall);
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// BlockKrylovSchur KrySchur (HermOp2, UGrid, Nu, resid,EvalNormSmall);
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RealD shift=2.5;
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KrySchur(src[0], maxIter, Nm, Nk, Nstop,&shift);
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// KrySchur(src[0], maxIter, Nm, Nk, Nstop);
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#if 0
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RealD shift=1.5;
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KrylovSchur KrySchur (Dwilson, UGrid, resid,EvalImNormSmall);
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KrySchur(src[0], maxIter, Nm, Nk, Nstop,&shift);
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#else
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KrylovSchur KrySchur (Iwilson, UGrid, resid,EvalImNormSmall);
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KrySchur(src[0], maxIter, Nm, Nk, Nstop);
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#endif
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std::cout << GridLogMessage << "evec.size= " << KrySchur.evecs.size()<< std::endl;
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src[0]=KrySchur.evecs[0];
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