fei::impl_utils Namespace Reference

Functions
void	find_offsets (const std::vector< int > &sources, const std::vector< int > &targets, std::vector< int > &offsets)
size_t	num_bytes_FillableMat (const fei::FillableMat &mat)
void	pack_FillableMat (const fei::FillableMat &mat, char *buffer)
void	unpack_FillableMat (const char *buffer_begin, const char *buffer_end, fei::FillableMat &mat, bool clear_mat_on_entry, bool overwrite_entries)
bool	unpack_CSRMat (const char *buffer_begin, const char *buffer_end, fei::CSRMat &mat)
size_t	num_bytes_indices_coefs (const std::vector< int > &indices, const std::vector< double > &coefs)
void	pack_indices_coefs (const std::vector< int > &indices, const std::vector< double > &coefs, std::vector< char > &buffer, bool resize_buffer)
void	unpack_indices_coefs (const std::vector< char > &buffer, std::vector< int > &indices, std::vector< double > &coefs)
void	separate_BC_eqns (const fei::FillableMat &mat, std::vector< int > &bcEqns, std::vector< double > &bcVals)
void	create_col_to_row_map (const fei::FillableMat &mat, std::multimap< int, int > &crmap)
int	remove_couplings (fei::FillableMat &mat)
void	global_union (MPI_Comm comm, const fei::FillableMat &localMatrix, fei::FillableMat &globalUnionMatrix)
void	global_union (MPI_Comm comm, const fei::CSVec &localVec, fei::CSVec &globalUnionVec)
void	translate_to_reduced_eqns (const fei::Reducer &reducer, fei::CSRMat &mat)
void	translate_to_reduced_eqns (const fei::Reducer &reducer, fei::CSVec &vec)
void	add_to_graph (const fei::CSRMat &inmat, fei::Graph &graph)
void	add_to_matrix (const fei::CSRMat &inmat, bool sum_into, fei::Matrix &matrix)

Detailed Description

The impl_utils namespace contains implementation-utilities. Helpers for implementation code, not part of the public API.

Function Documentation

void fei::impl_utils::find_offsets	(	const std::vector< int > &	sources,
		const std::vector< int > &	targets,
		std::vector< int > &	offsets
	)

Given a vector of sources and a vector of targets, fill the offsets vector such that if offsets[i] >= 0, then sources[i] == targets[offsets[i]]. For any i such that sources[i] is not found in targets, then offsets[i] == -1. The offsets vector will have length equal to the length of sources.

For efficiency, it is assumed that both sources and targets are sorted.

Definition at line 23 of file fei_impl_utils.cpp.

Referenced by fei::multiply_trans_CSRMat_CSRMat(), and fei::multiply_trans_CSRMat_CSVec().

size_t fei::impl_utils::num_bytes_FillableMat

(

const fei::FillableMat &

mat

)

Definition at line 52 of file fei_impl_utils.cpp.

References fei::count_nnz(), and fei::FillableMat::getNumRows().

Referenced by global_union(), and fei::Matrix_core::setCommSizes().

void fei::impl_utils::pack_FillableMat	(	const fei::FillableMat &	mat,
		char *	buffer
	)

Definition at line 64 of file fei_impl_utils.cpp.

References fei::FillableMat::begin(), fei::CSVec::coefs(), fei::count_nnz(), fei::FillableMat::end(), fei::FillableMat::getNumRows(), fei::CSVec::indices(), and fei::CSVec::size().

Referenced by fei::Matrix_core::gatherFromOverlap(), global_union(), and fei::Matrix_core::setCommSizes().

void fei::impl_utils::unpack_FillableMat	(	const char *	data_begin,
		const char *	data_end,
		fei::FillableMat &	mat,
		bool	clear_mat_on_entry = true,
		bool	overwrite_entries = true
	)

unpack a pair of std::vector objects into an fei::FillableMat object. The std::vector objects are assumed to have been produced by the function pack_FillableMat(...).

Definition at line 105 of file fei_impl_utils.cpp.

References fei::FillableMat::clear(), fei::FillableMat::putCoef(), and fei::FillableMat::sumInCoef().

Referenced by global_union().

bool fei::impl_utils::unpack_CSRMat	(	const char *	buffer_begin,
		const char *	buffer_end,
		fei::CSRMat &	mat
	)

return-value is true if the unpacked matrix contains nothing but zeros...

Definition at line 153 of file fei_impl_utils.cpp.

References fei::CSRMat::getGraph(), fei::CSRMat::getPackedCoefs(), fei::SparseRowGraph::packedColumnIndices, fei::SparseRowGraph::rowNumbers, and fei::SparseRowGraph::rowOffsets.

Referenced by fei::Matrix_core::gatherFromOverlap().

size_t fei::impl_utils::num_bytes_indices_coefs	(	const std::vector< int > &	indices,
		const std::vector< double > &	coefs
	)

Definition at line 198 of file fei_impl_utils.cpp.

void fei::impl_utils::pack_indices_coefs	(	const std::vector< int > &	indices,
		const std::vector< double > &	coefs,
		std::vector< char > &	buffer,
		bool	resize_buffer
	)

Definition at line 207 of file fei_impl_utils.cpp.

Referenced by fei::Vector_core::pack_send_buffers().

void fei::impl_utils::unpack_indices_coefs	(	const std::vector< char > &	buffer,
		std::vector< int > &	indices,
		std::vector< double > &	coefs
	)

Definition at line 235 of file fei_impl_utils.cpp.

Referenced by fei::Vector_core::gatherFromOverlap().

void fei::impl_utils::separate_BC_eqns	(	const fei::FillableMat &	mat,
		std::vector< int > &	bcEqns,
		std::vector< double > &	bcVals
	)

Definition at line 258 of file fei_impl_utils.cpp.

References fei::FillableMat::begin(), fei::console_out(), fei::FillableMat::end(), and fei::get_entry().

Referenced by extractDirichletBCs(), LinSysCoreFilter::implementAllBCs(), and snl_fei::LinearSystem_FEData::implementBCs().

void fei::impl_utils::create_col_to_row_map	(	const fei::FillableMat &	mat,
		std::multimap< int, int > &	crmap
	)

Definition at line 290 of file fei_impl_utils.cpp.

References fei::FillableMat::begin(), fei::FillableMat::end(), fei::get_row_numbers(), fei::FillableMat::getNumRows(), and fei::CSVec::indices().

Referenced by remove_couplings().

int fei::impl_utils::remove_couplings

(

fei::FillableMat &

mat

)

Definition at line 319 of file fei_impl_utils.cpp.

References fei::add_entries(), fei::FillableMat::begin(), fei::CSVec::coefs(), fei::console_out(), create_col_to_row_map(), fei::FillableMat::create_or_getRow(), fei::FillableMat::end(), FEI_ENDL, fei::get_entry(), fei::get_row_numbers(), fei::CSVec::indices(), fei::remove_entry(), and fei::CSVec::size().

Referenced by fei::MatrixGraph_Impl2::createSlaveMatrices().

void fei::impl_utils::global_union	(	MPI_Comm	comm,
		const fei::FillableMat &	localMatrix,
		fei::FillableMat &	globalUnionMatrix
	)

Definition at line 385 of file fei_impl_utils.cpp.

References fei::Allgatherv(), fei::localProc(), num_bytes_FillableMat(), fei::numProcs(), pack_FillableMat(), and unpack_FillableMat().

Referenced by fei::MatrixGraph_Impl2::createSlaveMatrices(), and snl_fei::LinearSystem_General::implementBCs().

void fei::impl_utils::global_union	(	MPI_Comm	comm,
		const fei::CSVec &	localVec,
		fei::CSVec &	globalUnionVec
	)

Definition at line 434 of file fei_impl_utils.cpp.

References fei::Allgatherv(), fei::CSVec::coefs(), fei::CSVec::indices(), and fei::put_entry().

void fei::impl_utils::translate_to_reduced_eqns	(	const fei::Reducer &	reducer,
		fei::CSRMat &	mat
	)

Definition at line 488 of file fei_impl_utils.cpp.

References fei::CSRMat::getGraph(), fei::SparseRowGraph::packedColumnIndices, fei::SparseRowGraph::rowNumbers, and fei::Reducer::translateToReducedEqn().

Referenced by fei::Reducer::assembleReducedGraph(), fei::Reducer::assembleReducedMatrix(), and fei::Reducer::assembleReducedVector().

void fei::impl_utils::translate_to_reduced_eqns	(	const fei::Reducer &	reducer,
		fei::CSVec &	vec
	)

Definition at line 504 of file fei_impl_utils.cpp.

References fei::CSVec::indices(), and fei::Reducer::translateToReducedEqn().

void fei::impl_utils::add_to_graph	(	const fei::CSRMat &	inmat,
		fei::Graph &	graph
	)

Definition at line 513 of file fei_impl_utils.cpp.

References fei::Graph::addIndices(), fei::CSRMat::getGraph(), fei::SparseRowGraph::packedColumnIndices, fei::SparseRowGraph::rowNumbers, and fei::SparseRowGraph::rowOffsets.

Referenced by fei::Reducer::assembleReducedGraph().

void fei::impl_utils::add_to_matrix	(	const fei::CSRMat &	inmat,
		bool	sum_into,
		fei::Matrix &	matrix
	)

Definition at line 532 of file fei_impl_utils.cpp.

References fei::Matrix::copyIn(), FEI_DENSE_ROW, fei::CSRMat::getGraph(), fei::CSRMat::getPackedCoefs(), fei::SparseRowGraph::packedColumnIndices, fei::SparseRowGraph::rowNumbers, fei::SparseRowGraph::rowOffsets, and fei::Matrix::sumIn().

Referenced by fei::Reducer::assembleReducedMatrix().