Teko_BasicMappingStrategy.cpp

/*
// @HEADER
// 
// ***********************************************************************
// 
//      Teko: A package for block and physics based preconditioning
//                  Copyright 2010 Sandia Corporation 
//  
// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
// the U.S. Government retains certain rights in this software.
//  
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//  
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//  
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//  
// 3. Neither the name of the Corporation nor the names of the
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission. 
//  
// THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SANDIA CORPORATION OR THE
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 
// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//  
// Questions? Contact Eric C. Cyr (eccyr@sandia.gov)
// 
// ***********************************************************************
// 
// @HEADER
 
*/
 
#include "Epetra/Teko_BasicMappingStrategy.hpp"
#include "Epetra/Teko_EpetraHelpers.hpp"
 
#include "Thyra_EpetraThyraWrappers.hpp"
#include "Thyra_DefaultSpmdMultiVector.hpp"
 
using Teuchos::RCP;
using Teuchos::rcp;
using Teuchos::rcp_dynamic_cast;
 
namespace Teko {
namespace Epetra {
 
// Creates a strided mapping strategy. This class is useful
// for breaking up nodally ordered matrices (i.e. the unknowns
// in a FEM problem are ordered [u0,v0,p0,u1,v1,p1,...]). Current
// implimentation only supports a fixed number of variables
//
//    arguments: 
//       vars - Number of different variables 
//       map  - original Epetra_Map to be broken up
//       comm - Epetra_Comm object related to the map
//
BasicMappingStrategy::BasicMappingStrategy(const Teuchos::RCP<const Epetra_Map> & rMap,
                                           const Teuchos::RCP<const Epetra_Map> & dMap, const Epetra_Comm & /* comm */)
{
   rangeMap_ = rMap;
   domainMap_ = dMap;
}
 
// Virtual function defined in MappingStrategy.  This copies
// an Epetra_MultiVector into a Thyra::MultiVectorBase with
// blocking handled by the strides defined in the constructor.
//
//   arguments:
//      X       - source Epetra_MultiVector
//      thyra_X - destination Thyra::MultiVectorBase
//
void BasicMappingStrategy::copyEpetraIntoThyra(const Epetra_MultiVector& X,
                                               const Teuchos::Ptr<Thyra::MultiVectorBase<double> > & thyra_X) const
{
   // perform a simple copy
   RCP<Thyra::DefaultSpmdMultiVector<double> > vec 
            = rcp_dynamic_cast<Thyra::DefaultSpmdMultiVector<double> >(Teuchos::rcpFromRef(*thyra_X)); 
   Teuchos::RCP<Epetra_MultiVector> ptrX = Teuchos::rcp_const_cast<Epetra_MultiVector>(Teuchos::rcpFromRef(X));
   fillDefaultSpmdMultiVector(vec,ptrX);
}
 
// Virtual function defined in MappingStrategy.  This copies
// an Epetra_MultiVector into a Thyra::MultiVectorBase with
// blocking handled by the strides defined in the constructor.
//
//   arguments:
//      thyra_Y - source Thyra::MultiVectorBase
//      Y       - destination Epetra_MultiVector
//
void BasicMappingStrategy::copyThyraIntoEpetra(const RCP<const Thyra::MultiVectorBase<double> > & thyra_Y,
                                                 Epetra_MultiVector& Y) const
{
   RCP<const Epetra_MultiVector> eSrc = Thyra::get_Epetra_MultiVector(*rangeMap(),thyra_Y);
 
   Y = *eSrc;
}
 
} // end namespace Epetra
} // end namespace Teko