Exemplo n.º 1
0
    void Apply ( const Xpetra::MultiVector<Scalar, LocalOrdinal, GlobalOrdinal, Node>& x, Xpetra::MultiVector<Scalar, LocalOrdinal, GlobalOrdinal, Node>& y, ETrans trans=NOTRANS ) const {
        TEUCHOS_TEST_FOR_EXCEPTION(trans!=NOTRANS, XpetraOpFailure,
                                   "Belos::XpetraOp::Apply, transpose mode != NOTRANS not supported.");

        //FIXME InitialGuessIsZero currently does nothing in MueLu::Hierarchy.Iterate().
        y.putScalar(0.0);

        Op_->apply(x,y);
    }
Exemplo n.º 2
0
    void Apply(const Xpetra::MultiVector<Scalar, LocalOrdinal, GlobalOrdinal, Node>& x, Xpetra::MultiVector<Scalar, LocalOrdinal, GlobalOrdinal, Node>& y, ETrans trans = NOTRANS ) const {

      TEUCHOS_TEST_FOR_EXCEPTION(trans != NOTRANS, MueLuOpFailure,
                         "Belos::MueLuOp::Apply, transpose mode != NOTRANS not supported by MueLu preconditionners.");

      //FIXME InitialGuessIsZero currently does nothing in MueLu::Hierarchy.Iterate(), but it matters for AMGX
      y.putScalar(0.0);

#ifdef HAVE_MUELU_AMGX
      if (!AMGX_.is_null()) {
        Tpetra::MultiVector<Scalar, LocalOrdinal, GlobalOrdinal, Node> tX = Xpetra::toTpetra(x);
        Tpetra::MultiVector<Scalar, LocalOrdinal, GlobalOrdinal, Node> tY = Xpetra::toTpetra(y);

        AMGX_->apply(tX, tY);
      }
#endif
      if (!Hierarchy_.is_null())
        Hierarchy_->Iterate(x, y, 1, true);
    }