1 #ifndef MUELU_CREATE_TPETRA_PRECONDITIONER_HPP 2 #define MUELU_CREATE_TPETRA_PRECONDITIONER_HPP 7 #include <Teuchos_XMLParameterListHelpers.hpp> 8 #include <Tpetra_Operator.hpp> 9 #include <Tpetra_RowMatrix.hpp> 10 #include <Xpetra_TpetraBlockCrsMatrix.hpp> 11 #include <Tpetra_BlockCrsMatrix.hpp> 12 #include <Xpetra_CrsMatrix.hpp> 13 #include <Xpetra_MultiVector.hpp> 14 #include <Xpetra_MultiVectorFactory.hpp> 19 #include <MueLu_Hierarchy.hpp> 21 #include <MueLu_MLParameterListInterpreter.hpp> 22 #include <MueLu_ParameterListInterpreter.hpp> 23 #include <MueLu_TpetraOperator.hpp> 25 #include <MueLu_Utilities.hpp> 26 #include <MueLu_HierarchyUtils.hpp> 29 #if defined(HAVE_MUELU_AMGX) 32 #include "cuda_runtime.h" 45 template <
class Scalar,
class LocalOrdinal,
class GlobalOrdinal,
class Node>
46 Teuchos::RCP<MueLu::TpetraOperator<Scalar,LocalOrdinal,GlobalOrdinal,Node> >
48 Teuchos::ParameterList& inParamList)
55 using Teuchos::ParameterList;
57 typedef Xpetra::MultiVector<SC,LO,GO,NO> MultiVector;
58 typedef Xpetra::Matrix<SC,LO,GO,NO> Matrix;
60 typedef Tpetra::CrsMatrix<Scalar, LocalOrdinal, GlobalOrdinal, Node> crs_matrix_type;
61 typedef Tpetra::BlockCrsMatrix<Scalar, LocalOrdinal, GlobalOrdinal, Node> block_crs_matrix_type;
63 #if defined(HAVE_MUELU_AMGX) 64 std::string externalMG =
"use external multigrid package";
65 if (inParamList.isParameter(externalMG) && inParamList.get<std::string>(externalMG) ==
"amgx"){
66 const RCP<crs_matrix_type> constCrsA = rcp_dynamic_cast<crs_matrix_type>(inA);
67 TEUCHOS_TEST_FOR_EXCEPTION(constCrsA == Teuchos::null,
Exceptions::RuntimeError,
"CreateTpetraPreconditioner: failed to dynamic cast to Tpetra::CrsMatrix, which is required to be able to use AmgX.");
74 RCP<block_crs_matrix_type> bcrsA = rcp_dynamic_cast<block_crs_matrix_type>(inA);
75 RCP<crs_matrix_type> crsA = rcp_dynamic_cast<crs_matrix_type>(inA);
76 if (crsA != Teuchos::null)
77 A = TpetraCrs_To_XpetraMatrix<SC,LO,GO,NO>(crsA);
78 else if (bcrsA != Teuchos::null) {
79 RCP<Xpetra::CrsMatrix<SC,LO,GO,NO> > temp = rcp(
new Xpetra::TpetraBlockCrsMatrix<SC,LO,GO,NO>(bcrsA));
80 TEUCHOS_TEST_FOR_EXCEPTION(temp==Teuchos::null,
Exceptions::RuntimeError,
"CreateTpetraPreconditioner: cast from Tpetra::BlockCrsMatrix to Xpetra::TpetraBlockCrsMatrix failed.");
81 A = rcp(
new Xpetra::CrsMatrixWrap<SC,LO,GO,NO>(temp));
84 TEUCHOS_TEST_FOR_EXCEPTION(
true,
Exceptions::RuntimeError,
"CreateTpetraPreconditioner: only Tpetra CrsMatrix and BlockCrsMatrix types are supported.");
87 Teuchos::ParameterList& userList = inParamList.sublist(
"user data");
88 if (userList.isParameter(
"Coordinates")) {
89 RCP<Xpetra::MultiVector<typename Teuchos::ScalarTraits<Scalar>::coordinateType,LO,GO,NO> > coordinates = Teuchos::null;
91 coordinates = TpetraMultiVector_To_XpetraMultiVector<typename Teuchos::ScalarTraits<Scalar>::coordinateType,LO,GO,NO>(userList.get<RCP<Tpetra::MultiVector<typename Teuchos::ScalarTraits<Scalar>::coordinateType,
LocalOrdinal,
GlobalOrdinal,
Node> > >(
"Coordinates"));
92 }
catch(Teuchos::Exceptions::InvalidParameterType&) {
93 coordinates = userList.get<RCP<Xpetra::MultiVector<typename Teuchos::ScalarTraits<Scalar>::coordinateType,
LocalOrdinal,
GlobalOrdinal,
Node> > >(
"Coordinates");
95 userList.set<RCP<Xpetra::MultiVector<typename Teuchos::ScalarTraits<Scalar>::coordinateType,LO,GO,NO> > >(
"Coordinates", coordinates);
98 if (userList.isParameter(
"Nullspace")) {
99 RCP<MultiVector> nullspace = Teuchos::null;
101 nullspace = TpetraMultiVector_To_XpetraMultiVector<SC,LO,GO,NO>(userList.get<RCP<Tpetra::MultiVector<Scalar, LocalOrdinal, GlobalOrdinal, Node> > >(
"Nullspace"));
102 }
catch(Teuchos::Exceptions::InvalidParameterType&) {
103 nullspace = userList.get<RCP<Xpetra::MultiVector<Scalar, LocalOrdinal, GlobalOrdinal, Node> > >(
"Nullspace");
105 userList.set<RCP<MultiVector> >(
"Nullspace", nullspace);
108 RCP<Hierarchy> H = MueLu::CreateXpetraPreconditioner<SC,LO,GO,NO>(A, inParamList);
122 template <
class Scalar,
class LocalOrdinal,
class GlobalOrdinal,
class Node>
123 Teuchos::RCP<MueLu::TpetraOperator<Scalar,LocalOrdinal,GlobalOrdinal,Node> >
125 const std::string& xmlFileName)
127 Teuchos::ParameterList paramList;
128 Teuchos::updateParametersFromXmlFileAndBroadcast(xmlFileName, Teuchos::Ptr<Teuchos::ParameterList>(¶mList), *inA->getDomainMap()->getComm());
129 return CreateTpetraPreconditioner<Scalar, LocalOrdinal, GlobalOrdinal, Node>(inA, paramList);
141 template <
class Scalar,
class LocalOrdinal,
class GlobalOrdinal,
class Node>
142 Teuchos::RCP<MueLu::TpetraOperator<Scalar,LocalOrdinal,GlobalOrdinal,Node> >
145 Teuchos::ParameterList paramList;
146 return CreateTpetraPreconditioner<Scalar, LocalOrdinal, GlobalOrdinal, Node>(inA, paramList);
157 template <
class Scalar,
class LocalOrdinal,
class GlobalOrdinal,
class Node>
165 typedef Xpetra::Matrix<SC,LO,GO,NO> Matrix;
166 typedef MueLu ::Hierarchy<SC,LO,GO,NO>
Hierarchy;
169 RCP<Matrix> A = TpetraCrs_To_XpetraMatrix<SC,LO,GO,NO>(inA);
171 MueLu::ReuseXpetraPreconditioner<SC,LO,GO,NO>(A, H);
178 #endif //ifndef MUELU_CREATE_TPETRA_PRECONDITIONER_HPP Various adapters that will create a MueLu preconditioner that is an Xpetra::Matrix.
MueLu::DefaultLocalOrdinal LocalOrdinal
Namespace for MueLu classes and methods.
RCP< MueLu::Hierarchy< Scalar, LocalOrdinal, GlobalOrdinal, Node > > GetHierarchy() const
Direct access to the underlying MueLu::Hierarchy.
MueLu::DefaultScalar Scalar
MueLu::DefaultGlobalOrdinal GlobalOrdinal
Wraps an existing MueLu::Hierarchy as a Tpetra::Operator.
void ReuseTpetraPreconditioner(const Teuchos::RCP< Tpetra::CrsMatrix< Scalar, LocalOrdinal, GlobalOrdinal, Node > > &inA, MueLu::TpetraOperator< Scalar, LocalOrdinal, GlobalOrdinal, Node > &Op)
Helper function to reuse an existing MueLu preconditioner.
Exception throws to report errors in the internal logical of the program.
Provides methods to build a multigrid hierarchy and apply multigrid cycles.
Teuchos::RCP< MueLu::TpetraOperator< Scalar, LocalOrdinal, GlobalOrdinal, Node > > CreateTpetraPreconditioner(const Teuchos::RCP< Tpetra::Operator< Scalar, LocalOrdinal, GlobalOrdinal, Node > > &inA, Teuchos::ParameterList &inParamList)
Helper function to create a MueLu or AMGX preconditioner that can be used by Tpetra.Given a Tpetra::Operator, this function returns a constructed MueLu preconditioner.
Adapter for AmgX library from Nvidia.