Teko Version of the Day
Teko_BasicMappingStrategy.cpp
00001 /*
00002 // @HEADER
00003 // 
00004 // ***********************************************************************
00005 // 
00006 //      Teko: A package for block and physics based preconditioning
00007 //                  Copyright 2010 Sandia Corporation 
00008 //  
00009 // Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
00010 // the U.S. Government retains certain rights in this software.
00011 //  
00012 // Redistribution and use in source and binary forms, with or without
00013 // modification, are permitted provided that the following conditions are
00014 // met:
00015 //  
00016 // 1. Redistributions of source code must retain the above copyright
00017 // notice, this list of conditions and the following disclaimer.
00018 //  
00019 // 2. Redistributions in binary form must reproduce the above copyright
00020 // notice, this list of conditions and the following disclaimer in the
00021 // documentation and/or other materials provided with the distribution.
00022 //  
00023 // 3. Neither the name of the Corporation nor the names of the
00024 // contributors may be used to endorse or promote products derived from
00025 // this software without specific prior written permission. 
00026 //  
00027 // THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
00028 // EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00029 // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
00030 // PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SANDIA CORPORATION OR THE
00031 // CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
00032 // EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
00033 // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
00034 // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
00035 // LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 
00036 // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
00037 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00038 //  
00039 // Questions? Contact Eric C. Cyr (eccyr@sandia.gov)
00040 // 
00041 // ***********************************************************************
00042 // 
00043 // @HEADER
00044 
00045 */
00046 
00047 #include "Epetra/Teko_BasicMappingStrategy.hpp"
00048 #include "Epetra/Teko_EpetraHelpers.hpp"
00049 
00050 #include "Thyra_EpetraThyraWrappers.hpp"
00051 #include "Thyra_DefaultSpmdMultiVector.hpp"
00052 
00053 using Teuchos::RCP;
00054 using Teuchos::rcp;
00055 using Teuchos::rcp_dynamic_cast;
00056 
00057 namespace Teko {
00058 namespace Epetra {
00059 
00060 // Creates a strided mapping strategy. This class is useful
00061 // for breaking up nodally ordered matrices (i.e. the unknowns
00062 // in a FEM problem are ordered [u0,v0,p0,u1,v1,p1,...]). Current
00063 // implimentation only supports a fixed number of variables
00064 //
00065 //    arguments: 
00066 //       vars - Number of different variables 
00067 //       map  - original Epetra_Map to be broken up
00068 //       comm - Epetra_Comm object related to the map
00069 //
00070 BasicMappingStrategy::BasicMappingStrategy(const Teuchos::RCP<const Epetra_Map> & rMap,
00071                                            const Teuchos::RCP<const Epetra_Map> & dMap, const Epetra_Comm & comm)
00072 {
00073    rangeMap_ = rMap;
00074    domainMap_ = dMap;
00075 }
00076 
00077 // Virtual function defined in MappingStrategy.  This copies
00078 // an Epetra_MultiVector into a Thyra::MultiVectorBase with
00079 // blocking handled by the strides defined in the constructor.
00080 //
00081 //   arguments:
00082 //      X       - source Epetra_MultiVector
00083 //      thyra_X - destination Thyra::MultiVectorBase
00084 //
00085 void BasicMappingStrategy::copyEpetraIntoThyra(const Epetra_MultiVector& X,
00086                                                const Teuchos::Ptr<Thyra::MultiVectorBase<double> > & thyra_X) const
00087 {
00088    // perform a simple copy
00089    RCP<Thyra::DefaultSpmdMultiVector<double> > vec 
00090             = rcp_dynamic_cast<Thyra::DefaultSpmdMultiVector<double> >(Teuchos::rcpFromRef(*thyra_X)); 
00091    Teuchos::RCP<Epetra_MultiVector> ptrX = Teuchos::rcp_const_cast<Epetra_MultiVector>(Teuchos::rcpFromRef(X));
00092    fillDefaultSpmdMultiVector(vec,ptrX);
00093 }
00094 
00095 // Virtual function defined in MappingStrategy.  This copies
00096 // an Epetra_MultiVector into a Thyra::MultiVectorBase with
00097 // blocking handled by the strides defined in the constructor.
00098 //
00099 //   arguments:
00100 //      thyra_Y - source Thyra::MultiVectorBase
00101 //      Y       - destination Epetra_MultiVector
00102 //
00103 void BasicMappingStrategy::copyThyraIntoEpetra(const RCP<const Thyra::MultiVectorBase<double> > & thyra_Y,
00104                                                  Epetra_MultiVector& Y) const
00105 {
00106    RCP<const Epetra_MultiVector> eSrc = Thyra::get_Epetra_MultiVector(*rangeMap(),thyra_Y);
00107 
00108    Y = *eSrc;
00109 }
00110 
00111 } // end namespace Epetra
00112 } // end namespace Teko
 All Classes Files Functions Variables