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WilsonMG: Add check for Mdiag + Σ Mdir == M

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Need to test my implementations of CoarsenedMatrix::Mdiag &
CoarsenedMatrix::Mdir.
This commit is contained in:
Daniel Richtmann 2018-01-31 14:03:30 +01:00
parent 10141f90c9
commit 9292be0b69
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GPG Key ID: B33C490AF0772057
1 changed files with 47 additions and 0 deletions
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47
tests/solver/Test_wilson_mg.cc
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@ -126,6 +126,40 @@ public:
}
};
template<class Field> void testOperator(LinearOperatorBase<Field> &LinOp, GridBase *Grid) {
std::vector<int> seeds({1, 2, 3, 4});
GridParallelRNG RNG(Grid);
RNG.SeedFixedIntegers(seeds);
// clang-format off
Field src(Grid); random(RNG, src);
Field result(Grid); result = zero;
Field ref(Grid); ref = zero;
Field tmp(Grid);
Field err(Grid);
// clang-format on
LinOp.Op(src, ref);
LinOp.OpDiag(src, result);
std::cout << GridLogMessage << "diag: norm2(result) = " << norm2(result) << std::endl;
for(int d = 0; d < 4; d++) {
LinOp.OpDir(src, tmp, d, +1);
std::cout << GridLogMessage << "dir + " << d << ": norm2(tmp) = " << norm2(tmp) << std::endl;
result = result + tmp;
LinOp.OpDir(src, tmp, d, -1);
std::cout << GridLogMessage << "dir - " << d << ": norm2(tmp) = " << norm2(tmp) << std::endl;
result = result + tmp;
}
err = result - ref;
std::cout << GridLogMessage << "Error: absolute = " << norm2(err) << " relative = " << norm2(err) / norm2(ref) << std::endl;
}
// template < class Fobj, class CComplex, int coarseSpins, int nbasis, class Matrix >
// class MultiGridPreconditioner : public LinearFunction< Lattice< Fobj > > {
template<class Fobj, class CComplex, int nbasis, class Matrix> class MultiGridPreconditioner : public LinearFunction<Lattice<Fobj>> {
@ -815,6 +849,19 @@ int main(int argc, char **argv) {
coarseResult = zero;
CoarseCG(CoarsePosDefHermOp, coarseSource, coarseResult);
std::cout << GridLogMessage << "**************************************************" << std::endl;
std::cout << GridLogMessage << "Testing the operators" << std::endl;
std::cout << GridLogMessage << "**************************************************" << std::endl;
std::cout << GridLogMessage << "MdagMLinearOperator<WilsonFermionR, LatticeFermion> FineHermOp(Dw);" << std::endl;
testOperator(FineHermOp, FGrid);
std::cout << GridLogMessage << "Gamma5HermitianLinearOperator<WilsonFermionR, LatticeFermion> FineHermIndefOp(Dw);" << std::endl;
testOperator(FineHermIndefOp, FGrid);
std::cout << GridLogMessage << "Gamma5HermitianLinearOperator<WilsonFermionR, LatticeFermion> FineHermIndefOpDD(DwDD);" << std::endl;
testOperator(FineHermIndefOpDD, FGrid);
std::cout << GridLogMessage << "MdagMLinearOperator<CoarseOperator, CoarseVector> CoarsePosDefHermOp(Dc);" << std::endl;
testOperator(CoarsePosDefHermOp, coarseGrids.Grids[0]);
std::cout << GridLogMessage << "**************************************************" << std::endl;
std::cout << GridLogMessage << "Building deflation preconditioner " << std::endl;
std::cout << GridLogMessage << "**************************************************" << std::endl;