/usr/include/trilinos/ROL_EpetraMultiVector.hpp is in libtrilinos-rol-dev 12.10.1-3.
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// ************************************************************************
//
// Rapid Optimization Library (ROL) Package
// Copyright (2014) Sandia Corporation
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// @HEADER
#ifndef ROL_EPETRAMULTIVECTOR_H
#define ROL_EPETRAMULTIVECTOR_H
#include "Epetra_MultiVector.h"
#include "Epetra_Map.h"
#include "Epetra_LocalMap.h"
#include "Epetra_IntVector.h"
#include "Epetra_Import.h"
#include "ROL_Vector.hpp"
/** \class ROL::EpetraMultiVector
\brief Implements the ROL::Vector interface for an Epetra_MultiVector.
*/
namespace ROL {
template <class Real>
class EpetraMultiVector : public Vector<Real> {
private:
Teuchos::RCP<Epetra_MultiVector> epetra_vec_;
public:
virtual ~EpetraMultiVector() {}
EpetraMultiVector(const Teuchos::RCP<Epetra_MultiVector> & epetra_vec) : epetra_vec_(epetra_vec) {}
/** \brief Compute \f$y \leftarrow x + y\f$ where \f$y = \mbox{*this}\f$.
*/
void plus( const Vector<Real> &x ) {
const EpetraMultiVector &ex = Teuchos::dyn_cast<const EpetraMultiVector>(x);
epetra_vec_->Update( 1.0, *ex.getVector(), 1.0 );
}
/** \brief Compute \f$y \leftarrow \alpha y\f$ where \f$y = \mbox{*this}\f$.
*/
void scale( const Real alpha ) {
epetra_vec_->Scale( (double)alpha );
}
/** \brief Returns \f$ \langle y,x \rangle \f$ where \f$y = \mbox{*this}\f$.
*/
Real dot( const Vector<Real> &x ) const {
double val;
const EpetraMultiVector &ex = Teuchos::dyn_cast<const EpetraMultiVector>(x);
epetra_vec_->Dot( *ex.getVector(), &val );
return (Real)val;
}
/** \brief Returns \f$ \| y \| \f$ where \f$y = \mbox{*this}\f$.
*/
Real norm() const {
double val;
epetra_vec_->Norm2(&val);
return (Real) val;
}
/** \brief Clone to make a new (uninitialized) vector.
*/
Teuchos::RCP<Vector<Real> > clone() const{
return Teuchos::rcp(new EpetraMultiVector(
Teuchos::rcp(new Epetra_MultiVector(epetra_vec_->Map(),epetra_vec_->NumVectors(),false)) ));
}
/** \brief Compute \f$y \leftarrow \alpha x + y\f$ where \f$y = \mbox{*this}\f$.
*/
virtual void axpy( const Real alpha, const Vector<Real> &x ) {
const EpetraMultiVector &ex = Teuchos::dyn_cast<const EpetraMultiVector>(x);
epetra_vec_->Update( alpha, *ex.getVector(), 1.0 );
}
/** \brief Set to zero vector.
*/
virtual void zero() {
epetra_vec_->PutScalar(0.0);
}
virtual void PutScalar(Real alpha) {
epetra_vec_->PutScalar((double) alpha);
}
/** \brief Set \f$y \leftarrow x\f$ where \f$y = \mbox{*this}\f$.
*/
virtual void set( const Vector<Real> &x ) {
const EpetraMultiVector &ex = Teuchos::dyn_cast<const EpetraMultiVector>(x);
epetra_vec_->Scale(1.0,*ex.getVector());
}
Teuchos::RCP<const Epetra_MultiVector> getVector() const {
return this->epetra_vec_;
}
Teuchos::RCP<Epetra_MultiVector> getVector() {
return this->epetra_vec_;
}
Teuchos::RCP<Vector<Real> > basis( const int i ) const {
Teuchos::RCP<EpetraMultiVector> e = Teuchos::rcp( new EpetraMultiVector( Teuchos::rcp(new Epetra_MultiVector(epetra_vec_->Map(),epetra_vec_->NumVectors(),true)) ));
const Epetra_BlockMap & domainMap = e->getVector()->Map();
Epetra_Map linearMap(domainMap.NumGlobalElements(), domainMap.NumMyElements(), 0, domainMap.Comm());
int lid = linearMap.LID(i);
if(lid >=0)
(*e->getVector())[0][lid]= 1.0;
return e;
/*
// Build IntVector of GIDs on all processors.
const Epetra_Comm & comm = domainMap.Comm();
int numMyElements = domainMap.NumMyElements();
Epetra_BlockMap allGidsMap(-1, numMyElements, 1, 0, comm);
Epetra_IntVector allGids(allGidsMap);
for (int j=0; j<numMyElements; j++) {allGids[j] = domainMap.GID(j);}
// Import my GIDs into an all-inclusive map.
int numGlobalElements = domainMap.NumGlobalElements();
Epetra_LocalMap allGidsOnRootMap(numGlobalElements, 0, comm);
Epetra_Import importer(allGidsOnRootMap, allGidsMap);
Epetra_IntVector allGidsOnRoot(allGidsOnRootMap);
allGidsOnRoot.Import(allGids, importer, Insert);
Epetra_Map rootDomainMap(-1, allGidsOnRoot.MyLength(), allGidsOnRoot.Values(), domainMap.IndexBase(), comm);
for (int j = 0; j < this->dimension(); j++) {
// Put 1's in slots
int curGlobalCol = rootDomainMap.GID(i); // Should return same value on all processors
if (domainMap.MyGID(curGlobalCol)){
int curCol = domainMap.LID(curGlobalCol);
(*e->getVector())[0][curCol]= 1.0;
}
}
return e;
*/
}
int dimension() const {return epetra_vec_->GlobalLength();}
}; // class EpetraMultiVector
} // namespace ROL
#endif
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