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refactored invDxDirect to allow for reusing the decomposition.

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This commit is contained in:
Markus Blatt 2020-07-23 10:31:37 +02:00
parent af9a9fa512
commit a011244d9c
1 changed files with 17 additions and 6 deletions
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23
opm/simulators/wells/MSWellHelpers.hpp
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@ -1,6 +1,7 @@
/*
Copyright 2017 SINTEF Digital, Mathematics and Cybernetics.
Copyright 2017 Statoil ASA.
Copyright 2020 Equinor ASA.
This file is part of the Open Porous Media project (OPM).
@ -36,17 +37,17 @@ namespace Opm {
namespace mswellhelpers
{
// obtain y = D^-1 * x with a direct solver
#if HAVE_UMFPACK
/// Applies umfpack and checks for singularity
template <typename MatrixType, typename VectorType>
VectorType
invDXDirect(const MatrixType& D, VectorType x)
applyUMFPack(Dune::UMFPack<MatrixType>& linsolver, VectorType x)
{
#if HAVE_UMFPACK
// The copy of x seems mandatory for calling UMFPack!
VectorType y(x.size());
y = 0.;
Dune::UMFPack<MatrixType> linsolver(D, 0);
// Object storing some statistics about the solving process
Dune::InverseOperatorResult res;
@ -62,8 +63,18 @@ namespace mswellhelpers
}
}
}
return y;
}
#endif
// obtain y = D^-1 * x with a direct solver
template <typename MatrixType, typename VectorType>
VectorType
invDXDirect(const MatrixType& D, VectorType x)
{
#if HAVE_UMFPACK
Dune::UMFPack<MatrixType> linsolver(D, 0);
return applyUMFPack(linsolver, x);
#else
// this is not thread safe
OPM_THROW(std::runtime_error, "Cannot use invDXDirect() without UMFPACK. "