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multishift conjugate gradient added and a strong test: take a diagonal

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but non-identity matrix
l1 0  0  0 ....
0  l2 0  0 ....
0  0  l3 0 ...
.  .   .
.  .   .
.  .   .

And apply the multishift CG to it. Sum the poles and residues.
Insist that this be the same as the exactly taken square root
where l1,l2,l3 >= 0.
This commit is contained in:
Azusa Yamaguchi
2015-06-08 11:52:44 +01:00
parent 351c2905f5
commit 8688ff8b3a
11 changed files with 453 additions and 54 deletions
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8
lib/algorithms/LinearOperator.h
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@ -167,6 +167,14 @@ namespace Grid {
virtual void operator() (LinearOperatorBase<Field> &Linop, const Field &in, Field &out) = 0;
};
/////////////////////////////////////////////////////////////
// Base classes for Multishift solvers for operators
/////////////////////////////////////////////////////////////
template<class Field> class OperatorMultiFunction {
public:
virtual void operator() (LinearOperatorBase<Field> &Linop, const Field &in, std::vector<Field> &out) = 0;
};
// FIXME : To think about
// Chroma functionality list defining LinearOperator