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Zoltan2_BasicIdentifierAdapter.hpp
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5// Zoltan2: A package of combinatorial algorithms for scientific computing
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45
50#ifndef _ZOLTAN2_BASICIDENTIFIERADAPTER_HPP_
51#define _ZOLTAN2_BASICIDENTIFIERADAPTER_HPP_
52
55
56namespace Zoltan2 {
57
81template <typename User>
83
84public:
90 typedef User user_t;
91
106 BasicIdentifierAdapter(lno_t numIds, const gno_t *idPtr,
107 std::vector<const scalar_t *> &weights, std::vector<int> &weightStrides);
108
116 BasicIdentifierAdapter(lno_t numIds, const gno_t *idPtr):
117 numIds_(numIds), idList_(idPtr), weights_() {}
118
120 // The Adapter interface.
122
123 size_t getLocalNumIDs() const { return numIds_; }
124
125 void getIDsView(const gno_t *&Ids) const { Ids = idList_; }
126
127 int getNumWeightsPerID() const { return weights_.size(); }
128
129 void getWeightsView(const scalar_t *&weights, int &stride, int idx) const {
130 if (idx < 0 || idx >= weights_.size()) {
131 std::ostringstream emsg;
132 emsg << __FILE__ << ":" << __LINE__
133 << " Invalid weight index " << idx << std::endl;
134 throw std::runtime_error(emsg.str());
135 }
136 size_t length;
137 weights_[idx].getStridedList(length, weights, stride);
138 }
139
140private:
141 lno_t numIds_;
142 const gno_t *idList_;
143 ArrayRCP<StridedData<lno_t, scalar_t> > weights_;
144};
145
147// Definitions
149
150template <typename User>
152 lno_t numIds, const gno_t *idPtr,
153 std::vector<const scalar_t *> &weights, std::vector<int> &weightStrides):
154 numIds_(numIds), idList_(idPtr), weights_()
155{
156 typedef StridedData<lno_t, scalar_t> input_t;
157 size_t numWeights = weights.size();
158
159 if (numWeights > 0){
160 weights_ = arcp(new input_t [numWeights], 0, numWeights, true);
161
162 if (numIds > 0){
163 for (size_t i = 0; i < numWeights; i++){
164 int stride = weightStrides.size() ? weightStrides[i] : 1;
165 ArrayRCP<const scalar_t> wgtV(weights[i], 0, stride * numIds, false);
166 weights_[i] = input_t(wgtV, stride);
167 }
168 }
169 }
170}
171
172} //namespace Zoltan2
173
174#endif
Defines the IdentifierAdapter interface.
This file defines the StridedData class.
This class represents a collection of global Identifiers and their associated weights,...
int getNumWeightsPerID() const
Returns the number of weights per object. Number of weights per object should be zero or greater....
BasicIdentifierAdapter(lno_t numIds, const gno_t *idPtr, std::vector< const scalar_t * > &weights, std::vector< int > &weightStrides)
Constructor.
BasicIdentifierAdapter(lno_t numIds, const gno_t *idPtr)
Constructor.
void getWeightsView(const scalar_t *&weights, int &stride, int idx) const
void getIDsView(const gno_t *&Ids) const
Provide a pointer to this process' identifiers.
size_t getLocalNumIDs() const
Returns the number of objects on this process.
IdentifierAdapter defines the interface for identifiers.
map_t::local_ordinal_type lno_t
map_t::global_ordinal_type gno_t
Created by mbenlioglu on Aug 31, 2020.
static ArrayRCP< ArrayRCP< zscalar_t > > weights
default_gno_t gno_t
The ordinal type (e.g., int, long, int64_t) that can represent global counts and identifiers.
default_node_t node_t
The Kokkos node type. This is only meaningful for users of Tpetra objects.
default_lno_t lno_t
The ordinal type (e.g., int, long, int64_t) that represents local counts and local indices.
default_part_t part_t
The data type to represent part numbers.
default_scalar_t scalar_t
The data type for weights and coordinates.