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Working towards solvers

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This commit is contained in:
Peter Boyle
2015-05-17 00:19:03 +01:00
parent bf7ab0da7a
commit 7992346190
3 changed files with 119 additions and 27 deletions
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55
lib/algorithms/LinearOperator.h
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@ -5,6 +5,22 @@
namespace Grid {
/////////////////////////////////////////////////////////////////////////////////////////////
// Interface defining what I expect of a general sparse matrix, such as a Fermion action
/////////////////////////////////////////////////////////////////////////////////////////////
template<class Field> class SparseMatrixBase {
public:
// Full checkerboar operations
virtual void M (const Field &in, Field &out);
virtual void Mdag (const Field &in, Field &out);
virtual RealD MdagM(const Field &in, Field &out);
// half checkerboard operaions
virtual void Mpc (const Field &in, Field &out);
virtual void MpcDag (const Field &in, Field &out);
virtual RealD MpcDagMpc(const Field &in, Field &out);
};
/////////////////////////////////////////////////////////////////////////////////////////////
// LinearOperators Take a something and return a something.
/////////////////////////////////////////////////////////////////////////////////////////////
@ -27,25 +43,13 @@ namespace Grid {
/////////////////////////////////////////////////////////////////////////////////////////////
template<class Field> class HermitianOperatorBase : public LinearOperatorBase<Field> {
public:
virtual RealD OpAndNorm(const Field &in, Field &out);
void AdjOp(const Field &in, Field &out) {
return Op(in,out);
Op(in,out);
};
void Op(const Field &in, Field &out) {
OpAndNorm(in,out);
};
};
/////////////////////////////////////////////////////////////////////////////////////////////
// Interface defining what I expect of a general sparse matrix
/////////////////////////////////////////////////////////////////////////////////////////////
template<class Field> class SparseMatrixBase {
public:
// Full checkerboar operations
virtual void M (const Field &in, Field &out);
virtual void Mdag (const Field &in, Field &out);
virtual void MdagM(const Field &in, Field &out);
// half checkerboard operaions
virtual void Mpc (const Field &in, Field &out);
virtual void MpcDag (const Field &in, Field &out);
virtual void MpcDagMpc(const Field &in, Field &out);
};
/////////////////////////////////////////////////////////////////////////////////////////////
@ -79,10 +83,10 @@ namespace Grid {
public:
NonHermitianRedBlackOperator(SparseMatrix &Mat): _Mat(Mat){};
void Op (const Field &in, Field &out){
this->Mpc(in,out);
_Mat.Mpc(in,out);
}
void AdjOp (const Field &in, Field &out){ //
this->MpcDag(in,out);
_Mat.MpcDag(in,out);
}
};
@ -94,12 +98,8 @@ namespace Grid {
SparseMatrix &_Mat;
public:
HermitianOperator(SparseMatrix &Mat): _Mat(Mat) {};
void Op (const Field &in, Field &out){
this->Mpc(in,out);
}
void AdjOp (const Field &in, Field &out){ //
this->MpcDag(in,out);
RealD OpAndNorm(const Field &in, Field &out){
return _Mat.MdagM(in,out);
}
};
@ -111,8 +111,8 @@ namespace Grid {
SparseMatrix &_Mat;
public:
HermitianRedBlackOperator(SparseMatrix &Mat): _Mat(Mat) {};
void Op (const Field &in, Field &out){
this->MpcDagMpc(in,out);
RealD OpAndNorm(const Field &in, Field &out){
return _Mat.MpcDagMpc(in,out);
}
};
@ -141,6 +141,7 @@ namespace Grid {
public:
RealD Tolerance;
Integer MaxIterations;
IterativeProcess(RealD tol,Integer maxit) : Tolerance(tol),MaxIterations(maxit) {};
virtual void operator() (LinearOperatorBase<Field> *Linop,const Field &in, Field &out) = 0;
};