/usr/include/trilinos/Thyra_TpetraEuclideanScalarProd_def.hpp is in libtrilinos-thyra-dev 12.12.1-5.
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// Thyra: Interfaces and Support for Abstract Numerical Algorithms
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#ifndef THYRA_TPETRA_EUCLIDEAN_SCALAR_PROD_DEF_HPP
#define THYRA_TPETRA_EUCLIDEAN_SCALAR_PROD_DEF_HPP
#include "Thyra_TpetraEuclideanScalarProd_decl.hpp"
#include "Thyra_TpetraMultiVector.hpp"
#include "Thyra_TpetraVector.hpp"
namespace Thyra {
template <class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node>
void TpetraEuclideanScalarProd<Scalar,LocalOrdinal,GlobalOrdinal,Node>::scalarProdsImpl(
const MultiVectorBase<Scalar>& X,
const MultiVectorBase<Scalar>& Y,
const ArrayView<Scalar>& scalarProds_out
) const
{
typedef Tpetra::MultiVector<Scalar,LocalOrdinal,GlobalOrdinal,Node> TMV;
Teuchos::RCP<const TMV> X_tpetra = this->getConstTpetraMultiVector(Teuchos::rcpFromRef(X));
Teuchos::RCP<const TMV> Y_tpetra = this->getConstTpetraMultiVector(Teuchos::rcpFromRef(Y));
if (nonnull(X_tpetra) && nonnull(Y_tpetra)) {
// Which one do we want transposed?
// Tpetra transposes the argument of dot.
// Below is the order from TpetraVectorSpace::scalarProdsImpl,
// so this would transpose Y. However, Thyra::dots (which calls
// the RTOp) transposes the first argument, so scalarProdsImpl
// in EuclideanScalarProd transposes X...
X_tpetra->dot(*Y_tpetra, scalarProds_out);
} else {
// If one of the casts succeeded, sync that MV to host space
if (nonnull(X_tpetra))
Teuchos::rcp_const_cast<TMV>(X_tpetra)->template sync<Kokkos::HostSpace>();
if (nonnull(Y_tpetra))
Teuchos::rcp_const_cast<TMV>(Y_tpetra)->template sync<Kokkos::HostSpace>();
EuclideanScalarProd<Scalar>::scalarProdsImpl(X, Y, scalarProds_out);
}
}
template <class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node>
Teuchos::RCP<const Tpetra::MultiVector<Scalar,LocalOrdinal,GlobalOrdinal,Node> >
TpetraEuclideanScalarProd<Scalar,LocalOrdinal,GlobalOrdinal,Node>::
getConstTpetraMultiVector(const RCP<const MultiVectorBase<Scalar> >& mv) const
{
using Teuchos::rcp_dynamic_cast;
typedef Thyra::TpetraMultiVector<Scalar,LocalOrdinal,GlobalOrdinal,Node> TMV;
typedef Thyra::TpetraVector<Scalar,LocalOrdinal,GlobalOrdinal,Node> TV;
RCP<const TMV> tmv = rcp_dynamic_cast<const TMV>(mv);
if (nonnull(tmv)) {
return tmv->getConstTpetraMultiVector();
}
RCP<const TV> tv = rcp_dynamic_cast<const TV>(mv);
if (nonnull(tv)) {
return tv->getConstTpetraVector();
}
return Teuchos::null;
}
} // end namespace Thyra
#endif // THYRA_EUCLIDEAN_SCALAR_PROD_DEF_HPP
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