MueLu  Version of the Day
 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Macros Groups Pages
MueLu_MergedBlockedMatrixFactory_def.hpp
Go to the documentation of this file.
1 // @HEADER
2 //
3 // ***********************************************************************
4 //
5 // MueLu: A package for multigrid based preconditioning
6 // Copyright 2012 Sandia Corporation
7 //
8 // Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
9 // the U.S. Government retains certain rights in this software.
10 //
11 // Redistribution and use in source and binary forms, with or without
12 // modification, are permitted provided that the following conditions are
13 // met:
14 //
15 // 1. Redistributions of source code must retain the above copyright
16 // notice, this list of conditions and the following disclaimer.
17 //
18 // 2. Redistributions in binary form must reproduce the above copyright
19 // notice, this list of conditions and the following disclaimer in the
20 // documentation and/or other materials provided with the distribution.
21 //
22 // 3. Neither the name of the Corporation nor the names of the
23 // contributors may be used to endorse or promote products derived from
24 // this software without specific prior written permission.
25 //
26 // THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
27 // EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28 // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 // PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SANDIA CORPORATION OR THE
30 // CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
31 // EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
32 // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
33 // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
34 // LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
35 // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
36 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
37 //
38 // Questions? Contact
39 // Jonathan Hu (jhu@sandia.gov)
40 // Andrey Prokopenko (aprokop@sandia.gov)
41 // Ray Tuminaro (rstumin@sandia.gov)
42 //
43 // ***********************************************************************
44 //
45 // @HEADER
46 #ifndef MUELU_MERGEDBLOCKEDMATRIXFACTORY_DEF_HPP_
47 #define MUELU_MERGEDBLOCKEDMATRIXFACTORY_DEF_HPP_
48 
49 #include <Xpetra_BlockedCrsMatrix.hpp>
50 #include "MueLu_Level.hpp"
51 #include "MueLu_Monitor.hpp"
52 #include "MueLu_PerfUtils.hpp"
53 
54 #include "MueLu_MergedBlockedMatrixFactory.hpp"
55 
56 namespace MueLu {
57 
58 template <class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node>
60 { }
61 
62 template <class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node>
64  RCP<ParameterList> validParamList = rcp(new ParameterList());
65 
66  validParamList->set< RCP<const FactoryBase> >("A", MueLu::NoFactory::getRCP()/*Teuchos::null*/, "Generating factory of the matrix A used for building SchurComplement (must be a 2x2 blocked operator, default = MueLu::NoFactory::getRCP())");
67 
68  return validParamList;
69 }
70 
71 
72 template <class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node>
74  Input(currentLevel, "A");
75 }
76 
77 template <class Scalar, class LocalOrdinal, class GlobalOrdinal, class Node>
79 {
80  FactoryMonitor m(*this, "MergedBlockedMatrix", currentLevel);
81  Teuchos::RCP<Matrix> A = Get<RCP<Matrix> >(currentLevel, "A");
82 
83  RCP<BlockedCrsMatrix> bA = Teuchos::rcp_dynamic_cast<BlockedCrsMatrix>(A);
84  TEUCHOS_TEST_FOR_EXCEPTION(bA == Teuchos::null, Exceptions::BadCast, "MueLu::MergedBlockedMatrixFactory::Build: input matrix A is not of type BlockedCrsMatrix! A generated by AFact_ must be a 2x2 block operator. error.");
85 
86  Teuchos::RCP<Matrix> mergedA = bA->Merge();
87  {
88  GetOStream(Statistics1) << PerfUtils::PrintMatrixInfo(*mergedA, "A (merged)");
89 
90  // note: variable "A" generated by this MergedBlockedMatrix factory is in fact the a merged version
91  // of the blocked matrix A (from the input)
92  Set(currentLevel, "A", mergedA);
93  }
94 }
95 
96 } // namespace MueLu
97 
98 #endif /* MUELU_MERGEDBLOCKEDMATRIXFACTORY_DEF_HPP_ */
Exception indicating invalid cast attempted.
ParameterList & set(std::string const &name, T const &value, std::string const &docString="", RCP< const ParameterEntryValidator > const &validator=null)
Timer to be used in factories. Similar to Monitor but with additional timers.
#define TEUCHOS_TEST_FOR_EXCEPTION(throw_exception_test, Exception, msg)
Print more statistics.
RCP< const ParameterList > GetValidParameterList() const
Return a const parameter list of valid parameters that setParameterList() will accept.
TEUCHOS_DEPRECATED RCP< T > rcp(T *p, Dealloc_T dealloc, bool owns_mem)
Class that holds all level-specific information.
Definition: MueLu_Level.hpp:99
static std::string PrintMatrixInfo(const Matrix &A, const std::string &msgTag, RCP< const Teuchos::ParameterList > params=Teuchos::null)
void DeclareInput(Level &currentLevel) const
Specifies the data that this class needs, and the factories that generate that data.
void Build(Level &currentLevel) const
Build an object with this factory.
static const RCP< const NoFactory > getRCP()
Static Get() functions.