/usr/include/trilinos/Thyra_SpmdMultiVectorSerializer_def.hpp is in libtrilinos-thyra-dev 12.4.2-2.
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// ***********************************************************************
//
// Thyra: Interfaces and Support for Abstract Numerical Algorithms
// Copyright (2004) Sandia Corporation
//
// Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
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//
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// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
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// @HEADER
#ifndef THYRA_SPMD_MULTI_VECTOR_SERIALIZER_HPP
#define THYRA_SPMD_MULTI_VECTOR_SERIALIZER_HPP
#include "Thyra_SpmdMultiVectorSerializer_decl.hpp"
#include "Thyra_SpmdVectorSpaceDefaultBase.hpp"
#include "Thyra_MultiVectorBase.hpp"
#include "Thyra_DetachedMultiVectorView.hpp"
namespace Thyra {
template<class Scalar>
SpmdMultiVectorSerializer<Scalar>::SpmdMultiVectorSerializer(
const bool my_binaryMode
)
:binaryMode_(my_binaryMode)
{}
template<class Scalar>
bool SpmdMultiVectorSerializer<Scalar>::isCompatible(
const MultiVectorBase<Scalar> &mv
) const
{
return 0!=dynamic_cast<const SpmdVectorSpaceBase<Scalar>*>(&*mv.range());
}
template<class Scalar>
void SpmdMultiVectorSerializer<Scalar>::serialize(
const MultiVectorBase<Scalar>& mv, std::ostream& out
) const
{
Teuchos::RCP<const SpmdVectorSpaceBase<Scalar> >
mpi_vec_spc
= Teuchos::rcp_dynamic_cast<const SpmdVectorSpaceBase<Scalar> >(mv.range());
std::ios::fmtflags fmt(out.flags());
out.precision(std::numeric_limits<Scalar>::digits10+4);
if( mpi_vec_spc.get() ) {
// This is a mpi-based vector space so let's just write the local
// multi-vector elements (row-by-row).
const Ordinal
localOffset = mpi_vec_spc->localOffset(),
localSubDim = mpi_vec_spc->localSubDim();
const Range1D localRng( localOffset, localOffset+localSubDim-1 );
ConstDetachedMultiVectorView<Scalar> local_mv(mv,localRng,Range1D());
out << localSubDim << " " << local_mv.numSubCols() << std::endl;
if( binaryMode() ) {
// Write column-wise for better cache performance
for( Ordinal j = 0; j < local_mv.numSubCols(); ++j )
out.write( reinterpret_cast<const char*>(&local_mv(0,j)), sizeof(Scalar)*localSubDim );
}
else {
// Write row-wise for better readability
for( Ordinal i = 0; i < localSubDim; ++i ) {
out << " " << i;
for( Ordinal j = 0; j < local_mv.numSubCols(); ++j ) {
out << " " << local_mv(i,j);
}
out << std::endl;
}
}
}
else {
// This is a serial (or locally replicated) vector space so
// just write all of the multi-vector elements here.
TEUCHOS_TEST_FOR_EXCEPTION( true, std::logic_error, "Does not handle non-SPMD spaces yet" );
}
out.flags(fmt);
}
template<class Scalar>
void SpmdMultiVectorSerializer<Scalar>::deserialize(
std::istream& in, MultiVectorBase<Scalar>* mv
) const
{
Teuchos::RCP<const SpmdVectorSpaceBase<Scalar> >
mpi_vec_spc = Teuchos::rcp_dynamic_cast<const SpmdVectorSpaceBase<Scalar> >(mv->range());
if( mpi_vec_spc.get() ) {
// This is a mpi-based vector space so let's just read the local
// multi-vector elements (row-by-row).
const Ordinal
localOffset = mpi_vec_spc->localOffset(),
localSubDim = mpi_vec_spc->localSubDim();
const Range1D localRng( localOffset, localOffset+localSubDim-1 );
DetachedMultiVectorView<Scalar> local_mv(*mv,localRng,Range1D());
#ifdef TEUCHOS_DEBUG
TEUCHOS_TEST_FOR_EXCEPTION(
!in, std::logic_error
,"Error: The input stream given is empty before any reading has began!\n"
"If this stream came from a file, then the file may not exist!"
);
#endif
Ordinal localSubDim_in;
in >> localSubDim_in;
#ifdef TEUCHOS_DEBUG
TEUCHOS_TEST_FOR_EXCEPTION(
localSubDim != localSubDim_in, std::logic_error
, "Error, localSubDim = "<<localSubDim<<" does not match the read in value of "
"localSubDim_in = "<<localSubDim_in<<"!"
);
#endif
Ordinal numSubCols_in;
in >> numSubCols_in;
#ifdef TEUCHOS_DEBUG
TEUCHOS_TEST_FOR_EXCEPTION(
local_mv.numSubCols() != numSubCols_in, std::logic_error
, "Error, numSubCols = "<<local_mv.numSubCols()<<" does not match the read in value of "
"numSubCols_in = "<<numSubCols_in<<"!"
);
#endif
// Get rid of extra newline after first line
in >> std::ws;
// Get the elements
if( binaryMode() ) {
// Column-wise
for( Ordinal j = 0; j < local_mv.numSubCols(); ++j )
in.read( reinterpret_cast<char*>(&local_mv(0,j)), sizeof(Scalar)*localSubDim );
}
else {
// Row-wise
for( Ordinal i = 0; i < localSubDim; ++i ) {
#ifdef TEUCHOS_DEBUG
TEUCHOS_TEST_FOR_EXCEPTION( !in, std::logic_error, "Error, premature end of input!" );
#endif
Ordinal i_in;
in >> i_in;
#ifdef TEUCHOS_DEBUG
TEUCHOS_TEST_FOR_EXCEPTION(
i != i_in, std::logic_error
, "Error, i = "<<i<<" does not match the read in value of "
"i_in = "<<i_in<<"!"
);
#endif
for( Ordinal j = 0; j < local_mv.numSubCols(); ++j ) {
#ifdef TEUCHOS_DEBUG
TEUCHOS_TEST_FOR_EXCEPTION(
!in, std::logic_error
,"Error: The input stream ran out at j="<<j<<" before"
" reaching the promised " << local_mv.numSubCols()
<< " rows of the (multi)vector!"
);
#endif
in >> local_mv(i,j);
}
}
}
}
else {
// This is a serial (or locally replicated) vector space so
// just read all of the multi-vector elements here.
TEUCHOS_TEST_FOR_EXCEPTION( true, std::logic_error, "Does not handle non-SPMD spaces yet" );
}
}
} // end namespace Thyra
#endif // THYRA_SPMD_MULTI_VECTOR_SERIALIZER_HPP
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