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Normal residual

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This commit is contained in:
Peter Boyle 2024-08-27 11:16:44 -04:00
parent 3752c49ef0
commit f82702872d
1 changed files with 26 additions and 0 deletions
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26
Grid/algorithms/iterative/NormalEquations.h
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@ -60,6 +60,32 @@ public:
} }
}; };
template<class Field> class NormalResidual : public LinearFunction<Field>{
private:
SparseMatrixBase<Field> & _Matrix;
OperatorFunction<Field> & _HermitianSolver;
LinearFunction<Field> & _Guess;
public:
/////////////////////////////////////////////////////
// Wrap the usual normal equations trick
/////////////////////////////////////////////////////
NormalResidual(SparseMatrixBase<Field> &Matrix, OperatorFunction<Field> &HermitianSolver,
LinearFunction<Field> &Guess)
: _Matrix(Matrix), _HermitianSolver(HermitianSolver), _Guess(Guess) {};
void operator() (const Field &in, Field &out){
Field res(in.Grid());
Field tmp(in.Grid());
MMdagLinearOperator<SparseMatrixBase<Field>,Field> MMdagOp(_Matrix);
_Guess(in,res);
_HermitianSolver(MMdagOp,in,res); // M Mdag res = in ;
_Matrix.Mdag(res,out); // out = Mdag res
}
};
template<class Field> class HPDSolver : public LinearFunction<Field> { template<class Field> class HPDSolver : public LinearFunction<Field> {
private: private:
LinearOperatorBase<Field> & _Matrix; LinearOperatorBase<Field> & _Matrix;