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// ***********************************************************************
//
// Stokhos Package
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//
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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.
//
// THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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#ifndef STOKHOS_TPETRA_UTILITIES_MP_VECTOR_HPP
#define STOKHOS_TPETRA_UTILITIES_MP_VECTOR_HPP
#include "Stokhos_Sacado_Kokkos_MP_Vector.hpp"
#include "Tpetra_Map.hpp"
#include "Tpetra_MultiVector.hpp"
#include "Tpetra_CrsGraph.hpp"
#include "Tpetra_CrsMatrix.hpp"
namespace Stokhos {
// Create a flattened map for a map representing a distribution for an
// embedded scalar type
template <typename LocalOrdinal, typename GlobalOrdinal, typename Node>
Teuchos::RCP< Tpetra::Map<LocalOrdinal,GlobalOrdinal,Node> >
create_flat_map(const Tpetra::Map<LocalOrdinal,GlobalOrdinal,Node>& map,
const LocalOrdinal block_size) {
using Tpetra::global_size_t;
using Teuchos::ArrayView;
using Teuchos::Array;
using Teuchos::RCP;
using Teuchos::rcp;
typedef Tpetra::Map<LocalOrdinal,GlobalOrdinal,Node> Map;
// Get map info
const global_size_t num_global_entries = map.getGlobalNumElements();
const size_t num_local_entries = map.getNodeNumElements();
const GlobalOrdinal index_base = map.getIndexBase();
ArrayView<const GlobalOrdinal> element_list =
map.getNodeElementList();
// Create new elements
const global_size_t flat_num_global_entries = num_global_entries*block_size;
const size_t flat_num_local_entries = num_local_entries * block_size;
const GlobalOrdinal flat_index_base = index_base;
Array<GlobalOrdinal> flat_element_list(flat_num_local_entries);
for (size_t i=0; i<num_local_entries; ++i)
for (LocalOrdinal j=0; j<block_size; ++j)
flat_element_list[i*block_size+j] = element_list[i]*block_size+j;
// Create new map
RCP<Map> flat_map =
rcp(new Map(flat_num_global_entries, flat_element_list(),
flat_index_base, map.getComm(), map.getNode()));
return flat_map;
}
// Create a flattened graph for a graph from a matrix with the
// MP::Vector scalar type (each block is an identity matrix)
// If flat_domain_map and/or flat_range_map are null, they will be computed,
// otherwise they will be used as-is.
template <typename LocalOrdinal, typename GlobalOrdinal, typename Node>
Teuchos::RCP< Tpetra::CrsGraph<LocalOrdinal,GlobalOrdinal,Node> >
create_flat_mp_graph(
const Tpetra::CrsGraph<LocalOrdinal,GlobalOrdinal,Node>& graph,
Teuchos::RCP<const Tpetra::Map<LocalOrdinal,GlobalOrdinal,Node> >& flat_domain_map,
Teuchos::RCP<const Tpetra::Map<LocalOrdinal,GlobalOrdinal,Node> >& flat_range_map,
const LocalOrdinal block_size) {
using Teuchos::ArrayRCP;
using Teuchos::RCP;
using Teuchos::rcp;
typedef Tpetra::Map<LocalOrdinal,GlobalOrdinal,Node> Map;
typedef Tpetra::CrsGraph<LocalOrdinal,GlobalOrdinal,Node> Graph;
// Build domain map if necessary
if (flat_domain_map == Teuchos::null)
flat_domain_map = create_flat_map(*(graph.getDomainMap()), block_size);
// Build range map if necessary
if (flat_range_map == Teuchos::null)
flat_range_map = create_flat_map(*(graph.getRangeMap()), block_size);
// Build column map
RCP<const Map> flat_col_map =
create_flat_map(*(graph.getColMap()), block_size);
// Build row map if necessary
// Check if range_map == row_map, then we can use flat_range_map
// as the flattened row map
RCP<const Map> flat_row_map;
if (graph.getRangeMap() == graph.getRowMap())
flat_row_map = flat_range_map;
else
flat_row_map = create_flat_map(*(graph.getRowMap()), block_size);
// Build flattened row offsets and column indices
ArrayRCP<const size_t> row_offsets = graph.getNodeRowPtrs();
ArrayRCP<const LocalOrdinal> col_indices = graph.getNodePackedIndices();
const size_t num_row = graph.getNodeNumRows();
const size_t num_col_indices = col_indices.size();
ArrayRCP<size_t> flat_row_offsets(num_row*block_size+1);
ArrayRCP<LocalOrdinal> flat_col_indices(num_col_indices * block_size);
for (size_t row=0; row<num_row; ++row) {
const size_t row_beg = row_offsets[row];
const size_t row_end = row_offsets[row+1];
const size_t num_col = row_end - row_beg;
for (LocalOrdinal j=0; j<block_size; ++j) {
const size_t flat_row = row*block_size + j;
const size_t flat_row_beg = row_beg*block_size + j*num_col;
flat_row_offsets[flat_row] = flat_row_beg;
for (size_t entry=0; entry<num_col; ++entry) {
const LocalOrdinal col = col_indices[row_beg+entry];
const LocalOrdinal flat_col = col*block_size + j;
flat_col_indices[flat_row_beg+entry] = flat_col;
}
}
}
flat_row_offsets[num_row*block_size] = num_col_indices*block_size;
// Build flattened graph
RCP<Graph> flat_graph =
rcp(new Graph(flat_row_map, flat_col_map,
flat_row_offsets, flat_col_indices));
flat_graph->fillComplete(flat_domain_map, flat_range_map);
return flat_graph;
}
#if defined(TPETRA_HAVE_KOKKOS_REFACTOR)
// Create a flattened graph for a graph from a matrix with the
// MP::Vector scalar type (each block is an identity matrix)
// If flat_domain_map and/or flat_range_map are null, they will be computed,
// otherwise they will be used as-is.
template <typename LocalOrdinal, typename GlobalOrdinal, typename Device>
Teuchos::RCP< Tpetra::CrsGraph<LocalOrdinal,GlobalOrdinal,
Kokkos::Compat::KokkosDeviceWrapperNode<Device> > >
create_flat_mp_graph(
const Tpetra::CrsGraph<LocalOrdinal,GlobalOrdinal,Kokkos::Compat::KokkosDeviceWrapperNode<Device> >& graph,
Teuchos::RCP<const Tpetra::Map<LocalOrdinal,GlobalOrdinal,Kokkos::Compat::KokkosDeviceWrapperNode<Device> > >& flat_domain_map,
Teuchos::RCP<const Tpetra::Map<LocalOrdinal,GlobalOrdinal,Kokkos::Compat::KokkosDeviceWrapperNode<Device> > >& flat_range_map,
const LocalOrdinal block_size) {
using Teuchos::ArrayRCP;
using Teuchos::RCP;
using Teuchos::rcp;
typedef Kokkos::Compat::KokkosDeviceWrapperNode<Device> Node;
typedef Tpetra::Map<LocalOrdinal,GlobalOrdinal,Node> Map;
typedef Tpetra::CrsGraph<LocalOrdinal,GlobalOrdinal,Node> Graph;
typedef typename Graph::local_graph_type::row_map_type::non_const_type RowPtrs;
typedef typename Graph::local_graph_type::entries_type::non_const_type LocalIndices;
// Build domain map if necessary
if (flat_domain_map == Teuchos::null)
flat_domain_map = create_flat_map(*(graph.getDomainMap()), block_size);
// Build range map if necessary
if (flat_range_map == Teuchos::null)
flat_range_map = create_flat_map(*(graph.getRangeMap()), block_size);
// Build column map
RCP<const Map> flat_col_map =
create_flat_map(*(graph.getColMap()), block_size);
// Build row map if necessary
// Check if range_map == row_map, then we can use flat_range_map
// as the flattened row map
RCP<const Map> flat_row_map;
if (graph.getRangeMap() == graph.getRowMap())
flat_row_map = flat_range_map;
else
flat_row_map = create_flat_map(*(graph.getRowMap()), block_size);
// Build flattened row offsets and column indices
ArrayRCP<const size_t> row_offsets = graph.getNodeRowPtrs();
ArrayRCP<const LocalOrdinal> col_indices = graph.getNodePackedIndices();
const size_t num_row = graph.getNodeNumRows();
const size_t num_col_indices = col_indices.size();
RowPtrs flat_row_offsets("row_ptrs", num_row*block_size+1);
LocalIndices flat_col_indices("col_indices", num_col_indices * block_size);
for (size_t row=0; row<num_row; ++row) {
const size_t row_beg = row_offsets[row];
const size_t row_end = row_offsets[row+1];
const size_t num_col = row_end - row_beg;
for (LocalOrdinal j=0; j<block_size; ++j) {
const size_t flat_row = row*block_size + j;
const size_t flat_row_beg = row_beg*block_size + j*num_col;
flat_row_offsets[flat_row] = flat_row_beg;
for (size_t entry=0; entry<num_col; ++entry) {
const LocalOrdinal col = col_indices[row_beg+entry];
const LocalOrdinal flat_col = col*block_size + j;
flat_col_indices[flat_row_beg+entry] = flat_col;
}
}
}
flat_row_offsets[num_row*block_size] = num_col_indices*block_size;
// Build flattened graph
RCP<Graph> flat_graph =
rcp(new Graph(flat_row_map, flat_col_map,
flat_row_offsets, flat_col_indices));
flat_graph->fillComplete(flat_domain_map, flat_range_map);
return flat_graph;
}
#endif
// Create a flattened vector by unrolling the MP::Vector scalar type. The
// returned vector is a view of the original
template <typename Storage, typename LocalOrdinal, typename GlobalOrdinal,
typename Node>
Teuchos::RCP< const Tpetra::MultiVector<typename Storage::value_type,
LocalOrdinal,GlobalOrdinal,Node> >
create_flat_vector_view(
const Tpetra::MultiVector<Sacado::MP::Vector<Storage>,
LocalOrdinal,GlobalOrdinal,Node>& vec_const,
const Teuchos::RCP< const Tpetra::Map<LocalOrdinal,GlobalOrdinal,Node> >& flat_map) {
using Teuchos::ArrayRCP;
using Teuchos::RCP;
using Teuchos::rcp;
typedef Sacado::MP::Vector<Storage> Scalar;
typedef typename Storage::value_type BaseScalar;
typedef Tpetra::MultiVector<Scalar,LocalOrdinal,GlobalOrdinal,Node> Vector;
typedef Tpetra::MultiVector<BaseScalar,LocalOrdinal,GlobalOrdinal,Node> FlatVector;
// MP size
const LocalOrdinal mp_size = Storage::static_size;
// Cast-away const since resulting vector is a view and we can't create
// a const-vector directly
Vector& vec = const_cast<Vector&>(vec_const);
// Get data
ArrayRCP<Scalar> vec_vals = vec.get1dViewNonConst();
const size_t vec_size = vec_vals.size();
// Create view of data
BaseScalar *flat_vec_ptr =
reinterpret_cast<BaseScalar*>(vec_vals.getRawPtr());
ArrayRCP<BaseScalar> flat_vec_vals =
Teuchos::arcp(flat_vec_ptr, 0, vec_size*mp_size, false);
// Create flat vector
const size_t stride = vec.getStride();
const size_t flat_stride = stride * mp_size;
const size_t num_vecs = vec.getNumVectors();
RCP<FlatVector> flat_vec =
rcp(new FlatVector(flat_map, flat_vec_vals, flat_stride, num_vecs));
return flat_vec;
}
// Create a flattened vector by unrolling the MP::Vector scalar type. The
// returned vector is a view of the original. This version creates the
// map if necessary
template <typename Storage, typename LocalOrdinal, typename GlobalOrdinal,
typename Node>
Teuchos::RCP< const Tpetra::MultiVector<typename Storage::value_type,
LocalOrdinal,GlobalOrdinal,Node> >
create_flat_vector_view(
const Tpetra::MultiVector<Sacado::MP::Vector<Storage>,
LocalOrdinal,GlobalOrdinal,Node>& vec,
Teuchos::RCP< const Tpetra::Map<LocalOrdinal,GlobalOrdinal,Node> >& flat_map) {
if (flat_map == Teuchos::null) {
const LocalOrdinal mp_size = Storage::static_size;
flat_map = create_flat_map(*(vec.getMap()), mp_size);
}
const Teuchos::RCP< const Tpetra::Map<LocalOrdinal,GlobalOrdinal,Node> > const_flat_map = flat_map;
return create_flat_vector_view(vec, const_flat_map);
}
// Create a flattened vector by unrolling the MP::Vector scalar type. The
// returned vector is a view of the original
template <typename Storage, typename LocalOrdinal, typename GlobalOrdinal,
typename Node>
Teuchos::RCP< Tpetra::MultiVector<typename Storage::value_type,
LocalOrdinal,GlobalOrdinal,Node> >
create_flat_vector_view(
Tpetra::MultiVector<Sacado::MP::Vector<Storage>,
LocalOrdinal,GlobalOrdinal,Node>& vec,
const Teuchos::RCP< const Tpetra::Map<LocalOrdinal,GlobalOrdinal,Node> >& flat_map) {
using Teuchos::ArrayRCP;
using Teuchos::RCP;
using Teuchos::rcp;
typedef Sacado::MP::Vector<Storage> Scalar;
typedef typename Storage::value_type BaseScalar;
typedef Tpetra::MultiVector<BaseScalar,LocalOrdinal,GlobalOrdinal,Node> FlatVector;
// MP size
const LocalOrdinal mp_size = Storage::static_size;
// Get data
ArrayRCP<Scalar> vec_vals = vec.get1dViewNonConst();
const size_t vec_size = vec_vals.size();
// Create view of data
BaseScalar *flat_vec_ptr =
reinterpret_cast<BaseScalar*>(vec_vals.getRawPtr());
ArrayRCP<BaseScalar> flat_vec_vals =
Teuchos::arcp(flat_vec_ptr, 0, vec_size*mp_size, false);
// Create flat vector
const size_t stride = vec.getStride();
const size_t flat_stride = stride * mp_size;
const size_t num_vecs = vec.getNumVectors();
RCP<FlatVector> flat_vec =
rcp(new FlatVector(flat_map, flat_vec_vals, flat_stride, num_vecs));
return flat_vec;
}
// Create a flattened vector by unrolling the MP::Vector scalar type. The
// returned vector is a view of the original. This version creates the
// map if necessary
template <typename Storage, typename LocalOrdinal, typename GlobalOrdinal,
typename Node>
Teuchos::RCP< Tpetra::MultiVector<typename Storage::value_type,
LocalOrdinal,GlobalOrdinal,Node> >
create_flat_vector_view(
Tpetra::MultiVector<Sacado::MP::Vector<Storage>,
LocalOrdinal,GlobalOrdinal,Node>& vec,
Teuchos::RCP< const Tpetra::Map<LocalOrdinal,GlobalOrdinal,Node> >& flat_map) {
if (flat_map == Teuchos::null) {
const LocalOrdinal mp_size = Storage::static_size;
flat_map = create_flat_map(*(vec.getMap()), mp_size);
}
const Teuchos::RCP< const Tpetra::Map<LocalOrdinal,GlobalOrdinal,Node> > const_flat_map = flat_map;
return create_flat_vector_view(vec, const_flat_map);
}
// Create a flattened vector by unrolling the MP::Vector scalar type. The
// returned vector is a view of the original
template <typename Storage, typename LocalOrdinal, typename GlobalOrdinal,
typename Node>
Teuchos::RCP< const Tpetra::Vector<typename Storage::value_type,
LocalOrdinal,GlobalOrdinal,Node> >
create_flat_vector_view(
const Tpetra::Vector<Sacado::MP::Vector<Storage>,
LocalOrdinal,GlobalOrdinal,Node>& vec_const,
const Teuchos::RCP< const Tpetra::Map<LocalOrdinal,GlobalOrdinal,Node> >& flat_map) {
const Tpetra::MultiVector<Sacado::MP::Vector<Storage>,LocalOrdinal,GlobalOrdinal,Node>& mv = vec_const;
Teuchos::RCP< Tpetra::MultiVector<typename Storage::value_type,LocalOrdinal,GlobalOrdinal,Node> > flat_mv = create_flat_vector_view(mv, flat_map);
return flat_mv->getVector(0);
}
// Create a flattened vector by unrolling the MP::Vector scalar type. The
// returned vector is a view of the original. This version creates the
// map if necessary
template <typename Storage, typename LocalOrdinal, typename GlobalOrdinal,
typename Node>
Teuchos::RCP< const Tpetra::Vector<typename Storage::value_type,
LocalOrdinal,GlobalOrdinal,Node> >
create_flat_vector_view(
const Tpetra::Vector<Sacado::MP::Vector<Storage>,
LocalOrdinal,GlobalOrdinal,Node>& vec,
Teuchos::RCP< const Tpetra::Map<LocalOrdinal,GlobalOrdinal,Node> >& flat_map) {
if (flat_map == Teuchos::null) {
const LocalOrdinal mp_size = Storage::static_size;
flat_map = create_flat_map(*(vec.getMap()), mp_size);
}
const Teuchos::RCP< const Tpetra::Map<LocalOrdinal,GlobalOrdinal,Node> > const_flat_map = flat_map;
return create_flat_vector_view(vec, const_flat_map);
}
// Create a flattened vector by unrolling the MP::Vector scalar type. The
// returned vector is a view of the original
template <typename Storage, typename LocalOrdinal, typename GlobalOrdinal,
typename Node>
Teuchos::RCP< Tpetra::Vector<typename Storage::value_type,
LocalOrdinal,GlobalOrdinal,Node> >
create_flat_vector_view(
Tpetra::Vector<Sacado::MP::Vector<Storage>,
LocalOrdinal,GlobalOrdinal,Node>& vec,
const Teuchos::RCP< const Tpetra::Map<LocalOrdinal,GlobalOrdinal,Node> >& flat_map) {
Tpetra::MultiVector<Sacado::MP::Vector<Storage>,LocalOrdinal,GlobalOrdinal,Node>& mv = vec;
Teuchos::RCP< Tpetra::MultiVector<typename Storage::value_type,LocalOrdinal,GlobalOrdinal,Node> > flat_mv = create_flat_vector_view(mv, flat_map);
return flat_mv->getVectorNonConst(0);
}
// Create a flattened vector by unrolling the MP::Vector scalar type. The
// returned vector is a view of the original. This version creates the
// map if necessary
template <typename Storage, typename LocalOrdinal, typename GlobalOrdinal,
typename Node>
Teuchos::RCP< Tpetra::Vector<typename Storage::value_type,
LocalOrdinal,GlobalOrdinal,Node> >
create_flat_vector_view(
Tpetra::Vector<Sacado::MP::Vector<Storage>,
LocalOrdinal,GlobalOrdinal,Node>& vec,
Teuchos::RCP< const Tpetra::Map<LocalOrdinal,GlobalOrdinal,Node> >& flat_map) {
if (flat_map == Teuchos::null) {
const LocalOrdinal mp_size = Storage::static_size;
flat_map = create_flat_map(*(vec.getMap()), mp_size);
}
const Teuchos::RCP< const Tpetra::Map<LocalOrdinal,GlobalOrdinal,Node> > const_flat_map = flat_map;
return create_flat_vector_view(vec, const_flat_map);
}
#if defined(TPETRA_HAVE_KOKKOS_REFACTOR)
// Create a flattened vector by unrolling the MP::Vector scalar type. The
// returned vector is a view of the original
template <typename Storage, typename LocalOrdinal, typename GlobalOrdinal,
typename Device>
Teuchos::RCP< const Tpetra::MultiVector<typename Storage::value_type,
LocalOrdinal,GlobalOrdinal,
Kokkos::Compat::KokkosDeviceWrapperNode<Device> > >
create_flat_vector_view(
const Tpetra::MultiVector<Sacado::MP::Vector<Storage>,
LocalOrdinal,GlobalOrdinal,
Kokkos::Compat::KokkosDeviceWrapperNode<Device> >& vec,
const Teuchos::RCP< const Tpetra::Map<LocalOrdinal,GlobalOrdinal,
Kokkos::Compat::KokkosDeviceWrapperNode<Device> > >& flat_map) {
using Teuchos::RCP;
using Teuchos::rcp;
typedef typename Storage::value_type BaseScalar;
typedef Kokkos::Compat::KokkosDeviceWrapperNode<Device> Node;
typedef Tpetra::MultiVector<BaseScalar,LocalOrdinal,GlobalOrdinal,Node> FlatVector;
typedef typename FlatVector::dual_view_type flat_view_type;
// Create flattenend view using special reshaping view assignment operator
flat_view_type flat_vals = vec.getDualView();
// Create flat vector
RCP<FlatVector> flat_vec = rcp(new FlatVector(flat_map, flat_vals));
return flat_vec;
}
// Create a flattened vector by unrolling the MP::Vector scalar type. The
// returned vector is a view of the original
template <typename Storage, typename LocalOrdinal, typename GlobalOrdinal,
typename Device>
Teuchos::RCP< Tpetra::MultiVector<typename Storage::value_type,
LocalOrdinal,GlobalOrdinal,
Kokkos::Compat::KokkosDeviceWrapperNode<Device> > >
create_flat_vector_view(
Tpetra::MultiVector<Sacado::MP::Vector<Storage>,
LocalOrdinal,GlobalOrdinal,
Kokkos::Compat::KokkosDeviceWrapperNode<Device> >& vec,
const Teuchos::RCP< const Tpetra::Map<LocalOrdinal,GlobalOrdinal,
Kokkos::Compat::KokkosDeviceWrapperNode<Device> > >& flat_map) {
using Teuchos::RCP;
using Teuchos::rcp;
typedef typename Storage::value_type BaseScalar;
typedef Kokkos::Compat::KokkosDeviceWrapperNode<Device> Node;
typedef Tpetra::MultiVector<BaseScalar,LocalOrdinal,GlobalOrdinal,Node> FlatVector;
typedef typename FlatVector::dual_view_type flat_view_type;
// Create flattenend view using special reshaping view assignment operator
flat_view_type flat_vals = vec.getDualView();
// Create flat vector
RCP<FlatVector> flat_vec = rcp(new FlatVector(flat_map, flat_vals));
return flat_vec;
}
#endif
// Create a flattened matrix by unrolling the MP::Vector scalar type. The
// returned matrix is NOT a view of the original (and can't be)
template <typename Storage, typename LocalOrdinal, typename GlobalOrdinal,
typename Node>
Teuchos::RCP< Tpetra::CrsMatrix<typename Storage::value_type,
LocalOrdinal,GlobalOrdinal,Node> >
create_flat_matrix(
const Tpetra::CrsMatrix<Sacado::MP::Vector<Storage>,
LocalOrdinal,GlobalOrdinal,Node>& mat,
const Teuchos::RCP<const Tpetra::CrsGraph<LocalOrdinal,GlobalOrdinal,Node> >& flat_graph,
const LocalOrdinal block_size) {
using Teuchos::ArrayView;
using Teuchos::Array;
using Teuchos::RCP;
using Teuchos::rcp;
typedef Sacado::MP::Vector<Storage> Scalar;
typedef typename Storage::value_type BaseScalar;
typedef Tpetra::CrsMatrix<BaseScalar,LocalOrdinal,GlobalOrdinal,Node> FlatMatrix;
// Create flat matrix
RCP<FlatMatrix> flat_mat = rcp(new FlatMatrix(flat_graph));
// Set values
const size_t num_rows = mat.getNodeNumRows();
const size_t max_cols = mat.getNodeMaxNumRowEntries();
ArrayView<const LocalOrdinal> indices, flat_indices;
ArrayView<const Scalar> values;
Array<BaseScalar> flat_values(max_cols);
for (size_t row=0; row<num_rows; ++row) {
mat.getLocalRowView(row, indices, values);
const size_t num_col = mat.getNumEntriesInLocalRow(row);
for (LocalOrdinal i=0; i<block_size; ++i) {
const LocalOrdinal flat_row = row*block_size + i;
for (size_t j=0; j<num_col; ++j)
flat_values[j] = values[j].coeff(i);
flat_graph->getLocalRowView(flat_row, flat_indices);
flat_mat->replaceLocalValues(flat_row, flat_indices,
flat_values(0, num_col));
}
}
flat_mat->fillComplete(flat_graph->getDomainMap(),
flat_graph->getRangeMap());
return flat_mat;
}
} // namespace Stokhos
#endif // STOKHOS_TPETRA_UTILITIES_MP_VECTOR_HPP
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