Ifpack2 Templated Preconditioning Package  Version 1.0
 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Groups Pages
Ifpack2_Details_Filu_decl.hpp
1 /*@HEADER
2 // ***********************************************************************
3 //
4 // Ifpack2: Templated Object-Oriented Algebraic Preconditioner Package
5 // Copyright (2009) Sandia Corporation
6 //
7 // Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
8 // license for use of this work by or on behalf of the U.S. Government.
9 //
10 // Redistribution and use in source and binary forms, with or without
11 // modification, are permitted provided that the following conditions are
12 // met:
13 //
14 // 1. Redistributions of source code must retain the above copyright
15 // notice, this list of conditions and the following disclaimer.
16 //
17 // 2. Redistributions in binary form must reproduce the above copyright
18 // notice, this list of conditions and the following disclaimer in the
19 // documentation and/or other materials provided with the distribution.
20 //
21 // 3. Neither the name of the Corporation nor the names of the
22 // contributors may be used to endorse or promote products derived from
23 // this software without specific prior written permission.
24 //
25 // THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
26 // EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
28 // PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SANDIA CORPORATION OR THE
29 // CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
30 // EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
31 // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
32 // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 // LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 //
37 // Questions? Contact Michael A. Heroux (maherou@sandia.gov)
38 //
39 // ***********************************************************************
40 //@HEADER
41 */
42 
44 
45 #ifndef __IFPACK2_FILU_DECL_HPP__
46 #define __IFPACK2_FILU_DECL_HPP__
47 
48 #include <Ifpack2_Details_FastILU_Base.hpp>
49 
50 //forward-declare the local preconditioner type
51 template<typename LocalOrdinal, typename Scalar, typename execution_space>
52 class FastILUPrec;
53 
54 namespace Ifpack2
55 {
56 namespace Details
57 {
58 
61 template<typename Scalar, typename LocalOrdinal, typename GlobalOrdinal, typename Node>
62 class Filu : public FastILU_Base<Scalar, LocalOrdinal, GlobalOrdinal, Node>
63 {
64  public:
66  typedef typename Base::TRowMatrix TRowMatrix;
67  typedef typename Base::ScalarArray ScalarArray;
68  typedef FastILUPrec<LocalOrdinal, Scalar, typename Base::execution_space> LocalFILU;
69 
72 
74  int getSweeps() const;
75 
77  int getNTrisol() const;
78 
80  void checkLocalILU() const;
81 
83  void checkLocalIC() const;
84 
85  protected:
86  mutable Teuchos::RCP<LocalFILU> localPrec_;
87 
88  void initLocalPrec();
89  //compute() takes A's local values
90  void computeLocalPrec();
91  void applyLocalPrec(ScalarArray x, ScalarArray y) const;
92  std::string getName() const;
93 };
94 
95 } //namespace Details
96 } //namespace Ifpack2
97 
98 #endif
99 
void checkLocalIC() const
Verify and print debug info about the internal IC preconditioner.
Definition: Ifpack2_Details_Filu_def.hpp:86
void initLocalPrec()
Construct the underlying preconditioner (localPrec_) using given params and then call localPrec_-&gt;ini...
Definition: Ifpack2_Details_Filu_def.hpp:93
The Ifpack2 wrapper to the ILU preconditioner of ShyLU FastILU.
Definition: Ifpack2_Details_Filu_decl.hpp:62
void checkLocalILU() const
Verify and print debug info about the internal ILU preconditioner.
Definition: Ifpack2_Details_Filu_def.hpp:79
Filu(Teuchos::RCP< const TRowMatrix > mat_)
Constructor.
Definition: Ifpack2_Details_Filu_def.hpp:60
The base class of the Ifpack2 FastILU wrappers (Filu, Fildl and Fic)
Definition: Ifpack2_Details_FastILU_Base_decl.hpp:66
void applyLocalPrec(ScalarArray x, ScalarArray y) const
Apply the local preconditioner with 1-D views of the local parts of X and Y (one vector only) ...
Definition: Ifpack2_Details_Filu_def.hpp:116
Tpetra::RowMatrix< Scalar, LocalOrdinal, GlobalOrdinal, Node > TRowMatrix
Tpetra row matrix.
Definition: Ifpack2_Details_FastILU_Base_decl.hpp:76
int getSweeps() const
Get the sweeps ("nFact") from localPrec_.
Definition: Ifpack2_Details_Filu_def.hpp:65
Kokkos::View< Scalar *, execution_space > ScalarArray
Array of Scalar on device.
Definition: Ifpack2_Details_FastILU_Base_decl.hpp:88
std::string getName() const
Get the name of the underlying preconditioner (&quot;Filu&quot;, &quot;Fildl&quot; or &quot;Fic&quot;)
Definition: Ifpack2_Details_Filu_def.hpp:125
int getNTrisol() const
Get the number of triangular solves ("nTrisol") from localPrec_.
Definition: Ifpack2_Details_Filu_def.hpp:72
void computeLocalPrec()
Get values array from the matrix and then call compute() on the underlying preconditioner.
Definition: Ifpack2_Details_Filu_def.hpp:106