Tpetra parallel linear algebra
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Functions for packing the entries of a Tpetra::CrsMatrix for communication, in the case where it is valid to go to the KokkosSparse::CrsMatrix (local sparse matrix data structure) directly. More...
#include "TpetraCore_config.h"
#include "Teuchos_Array.hpp"
#include "Teuchos_ArrayView.hpp"
#include "Tpetra_Details_Behavior.hpp"
#include "Tpetra_Details_castAwayConstDualView.hpp"
#include "Tpetra_Details_createMirrorView.hpp"
#include "Tpetra_Details_getEntryOnHost.hpp"
#include "Tpetra_Details_OrdinalTraits.hpp"
#include "Tpetra_Details_PackTraits.hpp"
#include "Tpetra_Details_Profiling.hpp"
#include "Tpetra_CrsMatrix_decl.hpp"
#include <memory>
#include <sstream>
#include <stdexcept>
#include <string>
Go to the source code of this file.
Classes | |
class | Tpetra::Details::PackCrsMatrixImpl::NumPacketsAndOffsetsFunctor< OutputOffsetsViewType, CountsViewType, InputOffsetsViewType, InputLocalRowIndicesViewType, InputLocalRowPidsViewType, debug > |
Compute the number of packets and offsets for the pack procedure. More... | |
Namespaces | |
Tpetra | |
Namespace Tpetra contains the class and methods constituting the Tpetra library. | |
Tpetra::Details | |
Nonmember function that computes a residual Computes R = B - A * X. | |
Functions | |
template<class OutputOffsetsViewType , class CountsViewType , class InputOffsetsViewType , class InputLocalRowIndicesViewType , class InputLocalRowPidsViewType > | |
CountsViewType::non_const_value_type | Tpetra::Details::PackCrsMatrixImpl::computeNumPacketsAndOffsets (const OutputOffsetsViewType &outputOffsets, const CountsViewType &counts, const InputOffsetsViewType &rowOffsets, const InputLocalRowIndicesViewType &lclRowInds, const InputLocalRowPidsViewType &lclRowPids, const typename CountsViewType::non_const_value_type sizeOfLclCount, const typename CountsViewType::non_const_value_type sizeOfGblColInd, const typename CountsViewType::non_const_value_type sizeOfPid, const typename CountsViewType::non_const_value_type sizeOfValue) |
Compute the number of packets and offsets for the pack procedure. More... | |
template<class ST , class ColumnMap , class BufferDeviceType > | |
KOKKOS_FUNCTION Kokkos::pair < int, size_t > | Tpetra::Details::PackCrsMatrixImpl::packCrsMatrixRow (const ColumnMap &col_map, const Kokkos::View< char *, BufferDeviceType > &exports, const typename PackTraits< typename ColumnMap::local_ordinal_type >::input_array_type &lids_in, const typename PackTraits< int >::input_array_type &pids_in, const typename PackTraits< ST >::input_array_type &vals_in, const size_t offset, const size_t num_ent, const size_t num_bytes_per_value, const bool pack_pids) |
Packs a single row of the CrsMatrix. More... | |
template<class LocalMatrix , class LocalMap , class BufferDeviceType > | |
void | Tpetra::Details::PackCrsMatrixImpl::do_pack (const LocalMatrix &local_matrix, const LocalMap &local_map, const Kokkos::View< char *, BufferDeviceType > &exports, const typename PackTraits< size_t >::input_array_type &num_packets_per_lid, const typename PackTraits< typename LocalMap::local_ordinal_type >::input_array_type &export_lids, const typename PackTraits< int >::input_array_type &source_pids, const Kokkos::View< const size_t *, BufferDeviceType > &offsets, const size_t num_bytes_per_value, const bool pack_pids) |
Perform the pack operation for the matrix. More... | |
template<typename ST , typename LO , typename GO , typename NT , typename BufferDeviceType > | |
void | Tpetra::Details::PackCrsMatrixImpl::packCrsMatrix (const CrsMatrix< ST, LO, GO, NT > &sourceMatrix, Kokkos::DualView< char *, BufferDeviceType > &exports, const Kokkos::View< size_t *, BufferDeviceType > &num_packets_per_lid, const Kokkos::View< const LO *, BufferDeviceType > &export_lids, const Kokkos::View< const int *, typename NT::device_type > &export_pids, size_t &constant_num_packets, const bool pack_pids, Distributor &) |
Pack specified entries of the given local sparse matrix for communication. More... | |
template<typename ST , typename LO , typename GO , typename NT > | |
void | Tpetra::Details::packCrsMatrix (const CrsMatrix< ST, LO, GO, NT > &sourceMatrix, Teuchos::Array< char > &exports, const Teuchos::ArrayView< size_t > &numPacketsPerLID, const Teuchos::ArrayView< const LO > &exportLIDs, size_t &constantNumPackets, Distributor &distor) |
Pack specified entries of the given local sparse matrix for communication. More... | |
template<typename ST , typename LO , typename GO , typename NT > | |
void | Tpetra::Details::packCrsMatrixNew (const CrsMatrix< ST, LO, GO, NT > &sourceMatrix, Kokkos::DualView< char *, typename DistObject< char, LO, GO, NT >::buffer_device_type > &exports, const Kokkos::DualView< size_t *, typename DistObject< char, LO, GO, NT >::buffer_device_type > &numPacketsPerLID, const Kokkos::DualView< const LO *, typename DistObject< char, LO, GO, NT >::buffer_device_type > &exportLIDs, size_t &constantNumPackets, Distributor &distor) |
Pack specified entries of the given local sparse matrix for communication, for "new" DistObject interface. More... | |
template<typename ST , typename LO , typename GO , typename NT > | |
void | Tpetra::Details::packCrsMatrixWithOwningPIDs (const CrsMatrix< ST, LO, GO, NT > &sourceMatrix, Kokkos::DualView< char *, typename DistObject< char, LO, GO, NT >::buffer_device_type > &exports_dv, const Teuchos::ArrayView< size_t > &numPacketsPerLID, const Teuchos::ArrayView< const LO > &exportLIDs, const Teuchos::ArrayView< const int > &sourcePIDs, size_t &constantNumPackets, Distributor &distor) |
Pack specified entries of the given local sparse matrix for communication. More... | |
Functions for packing the entries of a Tpetra::CrsMatrix for communication, in the case where it is valid to go to the KokkosSparse::CrsMatrix (local sparse matrix data structure) directly.
Data (bytes) describing the row of the CRS matrix are "packed" (concatenated) in to a (view of) char* object in the following order:
The functions in this file are companions to Tpetra_Details_unpackCrsMatrixAndCombine.hpp, i.e., Tpetra_Details_unpackCrsMatrixAndCombine.hpp implements the reverse of the packing order described above to ensure proper unpacking.
Definition in file Tpetra_Details_packCrsMatrix_def.hpp.