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Allow applyUMFPack to decompose if needed.

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This commit is contained in:
Markus Blatt 2020-07-24 17:58:12 +02:00
parent a011244d9c
commit ce409737fe
1 changed files with 9 additions and 4 deletions
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13
opm/simulators/wells/MSWellHelpers.hpp
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@ -42,8 +42,13 @@ namespace mswellhelpers
/// Applies umfpack and checks for singularity
template <typename MatrixType, typename VectorType>
VectorType
applyUMFPack(Dune::UMFPack<MatrixType>& linsolver, VectorType x)
applyUMFPack(const MatrixType& D, std::shared_ptr<Dune::UMFPack<MatrixType> >& linsolver, VectorType x)
{
if (!linsolver)
{
linsolver.reset(new Dune::UMFPack<MatrixType>(D, 0));
}
// The copy of x seems mandatory for calling UMFPack!
VectorType y(x.size());
y = 0.;
@ -52,7 +57,7 @@ namespace mswellhelpers
Dune::InverseOperatorResult res;
// Solve
linsolver.apply(y, x, res);
linsolver->apply(y, x, res);
// Checking if there is any inf or nan in y
// it will be the solution before we find a way to catch the singularity of the matrix
@ -73,8 +78,8 @@ namespace mswellhelpers
invDXDirect(const MatrixType& D, VectorType x)
{
#if HAVE_UMFPACK
Dune::UMFPack<MatrixType> linsolver(D, 0);
return applyUMFPack(linsolver, x);
std::shared_ptr<Dune::UMFPack<MatrixType> > linsolver;
return applyUMFPack(D, linsolver, x);
#else
// this is not thread safe
OPM_THROW(std::runtime_error, "Cannot use invDXDirect() without UMFPACK. "