Tpetra parallel linear algebra Version of the Day
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Functions for packing the entries of a Tpetra::CrsGraph for communication, in the case where it is valid to go to the KokkosSparse::CrsGraph (local sparse graph 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_CrsGraph_decl.hpp"
#include <memory>
#include <string>
Go to the source code of this file.
Classes | |
class | Tpetra::Details::PackCrsGraphImpl::NumPacketsAndOffsetsFunctor< OutputOffsetsViewType, CountsViewType, InputOffsetsViewType, InputLocalRowIndicesViewType, InputLocalRowPidsViewType, debug > |
Compute the number of packets and offsets for the pack procedure. More... | |
Namespaces | |
namespace | Tpetra |
Namespace Tpetra contains the class and methods constituting the Tpetra library. | |
namespace | 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::PackCrsGraphImpl::computeNumPacketsAndOffsets (const OutputOffsetsViewType &outputOffsets, const CountsViewType &counts, const InputOffsetsViewType &rowOffsets, const InputLocalRowIndicesViewType &lclRowInds, const InputLocalRowPidsViewType &lclRowPids) |
Compute the number of packets and offsets for the pack procedure. | |
template<class Packet , class LocalMapType , class BufferDeviceType , class InputLidsType , class InputPidsType > | |
KOKKOS_FUNCTION size_t | Tpetra::Details::PackCrsGraphImpl::packRow (const LocalMapType &col_map, const Kokkos::View< Packet *, BufferDeviceType > &exports, const InputLidsType &lids_in, const InputPidsType &pids_in, const size_t offset, const size_t num_ent, const bool pack_pids) |
Packs a single row of the CrsGraph. | |
template<class Packet , class LocalGraph , class LocalMap , class BufferDeviceType > | |
void | Tpetra::Details::PackCrsGraphImpl::do_pack (const LocalGraph &local_graph, const LocalMap &local_map, const Kokkos::View< Packet *, 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 bool pack_pids) |
Perform the pack operation for the graph. | |
template<typename LO , typename GO , typename NT > | |
void | Tpetra::Details::PackCrsGraphImpl::packCrsGraph (const CrsGraph< LO, GO, NT > &sourceGraph, Kokkos::DualView< typename CrsGraph< LO, GO, NT >::packet_type *, typename CrsGraph< LO, GO, NT >::buffer_device_type > &exports, const Kokkos::View< size_t *, typename CrsGraph< LO, GO, NT >::buffer_device_type > &num_packets_per_lid, const Kokkos::View< const LO *, typename CrsGraph< LO, GO, NT >::buffer_device_type > &export_lids, const Kokkos::View< const int *, typename CrsGraph< LO, GO, NT >::buffer_device_type > &export_pids, size_t &constant_num_packets, const bool pack_pids) |
Pack specified entries of the given local sparse graph for communication. | |
template<typename LO , typename GO , typename NT > | |
void | Tpetra::Details::packCrsGraph (const CrsGraph< LO, GO, NT > &sourceGraph, Teuchos::Array< typename CrsGraph< LO, GO, NT >::packet_type > &exports, const Teuchos::ArrayView< size_t > &numPacketsPerLID, const Teuchos::ArrayView< const LO > &exportLIDs, size_t &constantNumPackets) |
Pack specified entries of the given local sparse graph for communication. | |
template<typename LO , typename GO , typename NT > | |
void | Tpetra::Details::packCrsGraphNew (const CrsGraph< LO, GO, NT > &sourceGraph, const Kokkos::DualView< const LO *, typename CrsGraph< LO, GO, NT >::buffer_device_type > &exportLIDs, const Kokkos::DualView< const int *, typename CrsGraph< LO, GO, NT >::buffer_device_type > &exportPIDs, Kokkos::DualView< typename CrsGraph< LO, GO, NT >::packet_type *, typename CrsGraph< LO, GO, NT >::buffer_device_type > &exports, Kokkos::DualView< size_t *, typename CrsGraph< LO, GO, NT >::buffer_device_type > numPacketsPerLID, size_t &constantNumPackets, const bool pack_pids) |
Pack specified entries of the given local sparse graph for communication, for "new" DistObject interface. | |
template<typename LO , typename GO , typename NT > | |
void | Tpetra::Details::packCrsGraphWithOwningPIDs (const CrsGraph< LO, GO, NT > &sourceGraph, Kokkos::DualView< typename CrsGraph< LO, GO, NT >::packet_type *, typename CrsGraph< 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) |
Pack specified entries of the given local sparse graph for communication. | |
Functions for packing the entries of a Tpetra::CrsGraph for communication, in the case where it is valid to go to the KokkosSparse::CrsGraph (local sparse graph data structure) directly.
Data (bytes) describing the row of the CRS graph are "packed" (concatenated) in to a (view of) GO* object in the following order:
The functions in this file are companions to Tpetra_Details_unpackCrsGraphAndCombine.hpp, i.e., Tpetra_Details_unpackCrsGraphAndCombine.hpp implements the reverse of the packing order described above to ensure proper unpacking.
Definition in file Tpetra_Details_packCrsGraph_def.hpp.
CountsViewType::non_const_value_type Tpetra::Details::PackCrsGraphImpl::computeNumPacketsAndOffsets | ( | const OutputOffsetsViewType & | outputOffsets, |
const CountsViewType & | counts, | ||
const InputOffsetsViewType & | rowOffsets, | ||
const InputLocalRowIndicesViewType & | lclRowInds, | ||
const InputLocalRowPidsViewType & | lclRowPids ) |
Compute the number of packets and offsets for the pack procedure.
OutputOffsetsViewType | the type of the output offsets view |
CountsViewType | the type of the counts view |
InputOffsetsViewType | the type of the input offsets view |
InputLocalRowIndicesViewType | the type of the local row indices view |
InputLocalRowPidsViewType | the type of the local process IDs view |
This is the high level interface to the NumPacketsAndOffsetsFunctor functor
Definition at line 257 of file Tpetra_Details_packCrsGraph_def.hpp.
KOKKOS_FUNCTION size_t Tpetra::Details::PackCrsGraphImpl::packRow | ( | const LocalMapType & | col_map, |
const Kokkos::View< Packet *, BufferDeviceType > & | exports, | ||
const InputLidsType & | lids_in, | ||
const InputPidsType & | pids_in, | ||
const size_t | offset, | ||
const size_t | num_ent, | ||
const bool | pack_pids ) |
Packs a single row of the CrsGraph.
ColumnMap | the type of the local column map |
Data (bytes) describing the row of the CRS graph are "packed" (concatenated) in to a single (view of) GO* in the following order:
Definition at line 377 of file Tpetra_Details_packCrsGraph_def.hpp.
void Tpetra::Details::PackCrsGraphImpl::do_pack | ( | const LocalGraph & | local_graph, |
const LocalMap & | local_map, | ||
const Kokkos::View< Packet *, 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 bool | pack_pids ) |
Perform the pack operation for the graph.
LocalGraph | the specialization of the KokkosSparse::CrsGraph local graph |
LocalMap | the type of the local column map |
This is a higher level interface to the PackCrsGraphFunctor
Definition at line 560 of file Tpetra_Details_packCrsGraph_def.hpp.
void Tpetra::Details::PackCrsGraphImpl::packCrsGraph | ( | const CrsGraph< LO, GO, NT > & | sourceGraph, |
Kokkos::DualView< typename CrsGraph< LO, GO, NT >::packet_type *, typename CrsGraph< LO, GO, NT >::buffer_device_type > & | exports, | ||
const Kokkos::View< size_t *, typename CrsGraph< LO, GO, NT >::buffer_device_type > & | num_packets_per_lid, | ||
const Kokkos::View< const LO *, typename CrsGraph< LO, GO, NT >::buffer_device_type > & | export_lids, | ||
const Kokkos::View< const int *, typename CrsGraph< LO, GO, NT >::buffer_device_type > & | export_pids, | ||
size_t & | constant_num_packets, | ||
const bool | pack_pids ) |
Pack specified entries of the given local sparse graph for communication.
LO | The type of local indices. See the documentation of Map for requirements. |
GO | The type of global indices. See the documentation of Map for requirements. |
NT | The Kokkos Node type. See the documentation of Map for requirements. |
sourceGraph | [in] the CrsGraph source |
exports | [in/out] Output pack buffer; resized if needed. |
num_packets_per_lid | [out] Entry k gives the number of bytes packed for row export_lids[k] of the local graph. |
export_lids | [in] Local indices of the rows to pack. |
export_pids | [in] Process ranks for the column indices in each packed row. |
constant_num_packets | [out] Setting this to zero tells the caller to expect a possibly /// different ("nonconstant") number of packets per local index (i.e., a possibly different number of entries per row). |
Definition at line 659 of file Tpetra_Details_packCrsGraph_def.hpp.