1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
|
/*
* Copyright 2008-2009 NVIDIA Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
* Modifications to this file:
* Copyright (c) 2014-2015, The University of Queensland
* Licensed under the Apache License, Version 2.0.
*
*/
#include <cusp/format.h>
// TODO replace with detail/array2d_utils.h or something
#include <cusp/array2d.h>
#include <thrust/copy.h>
#include <thrust/gather.h>
#include <thrust/iterator/counting_iterator.h>
#include <thrust/iterator/transform_iterator.h>
namespace cusp
{
namespace detail
{
template <typename T1, typename T2>
void copy_matrix_dimensions(const T1& src, T2& dst)
{
dst.num_rows = src.num_rows;
dst.num_cols = src.num_cols;
dst.num_entries = src.num_entries;
}
template <typename T1, typename T2>
void copy(const T1& src, T2& dst,
cusp::cds_format,
cusp::cds_format)
{
copy_matrix_dimensions(src, dst);
dst.block_size = src.block_size;
dst.symmetric = src.symmetric;
cusp::copy(src.diagonal_offsets, dst.diagonal_offsets);
cusp::copy(src.values, dst.values);
}
template <typename T1, typename T2>
void copy(const T1& src, T2& dst,
cusp::coo_format,
cusp::coo_format)
{
copy_matrix_dimensions(src, dst);
cusp::copy(src.row_indices, dst.row_indices);
cusp::copy(src.column_indices, dst.column_indices);
cusp::copy(src.values, dst.values);
}
template <typename T1, typename T2>
void copy(const T1& src, T2& dst,
cusp::csr_format,
cusp::csr_format)
{
copy_matrix_dimensions(src, dst);
cusp::copy(src.row_offsets, dst.row_offsets);
cusp::copy(src.column_indices, dst.column_indices);
cusp::copy(src.values, dst.values);
}
template <typename T1, typename T2>
void copy(const T1& src, T2& dst,
cusp::dia_format,
cusp::dia_format)
{
copy_matrix_dimensions(src, dst);
cusp::copy(src.diagonal_offsets, dst.diagonal_offsets);
cusp::copy(src.values, dst.values);
}
template <typename T1, typename T2>
void copy(const T1& src, T2& dst,
cusp::ell_format,
cusp::ell_format)
{
copy_matrix_dimensions(src, dst);
cusp::copy(src.column_indices, dst.column_indices);
cusp::copy(src.values, dst.values);
}
template <typename T1, typename T2>
void copy(const T1& src, T2& dst,
cusp::hyb_format,
cusp::hyb_format)
{
copy_matrix_dimensions(src, dst);
cusp::copy(src.ell, dst.ell);
cusp::copy(src.coo, dst.coo);
}
template <typename T1, typename T2>
void copy(const T1& src, T2& dst,
cusp::array1d_format,
cusp::array1d_format)
{
dst.resize(src.size());
thrust::copy(src.begin(), src.end(), dst.begin());
}
// same orientation
template <typename T1, typename T2, typename Orientation>
void copy_array2d(const T1& src, T2& dst, Orientation)
{
// will preserve destination pitch if possible
dst.resize(src.num_rows, src.num_cols);
if (dst.pitch == src.pitch)
{
cusp::copy(src.values, dst.values);
}
else
{
thrust::counting_iterator<size_t> begin(0);
thrust::counting_iterator<size_t> end(src.num_entries);
cusp::detail::logical_to_physical_functor<size_t, Orientation> func1(src.num_rows, src.num_cols, src.pitch);
cusp::detail::logical_to_physical_functor<size_t, Orientation> func2(dst.num_rows, dst.num_cols, dst.pitch);
thrust::copy(thrust::make_permutation_iterator(src.values.begin(), thrust::make_transform_iterator(begin, func1)),
thrust::make_permutation_iterator(src.values.begin(), thrust::make_transform_iterator(end, func1)),
thrust::make_permutation_iterator(dst.values.begin(), thrust::make_transform_iterator(begin, func2)));
}
}
template <typename T1, typename T2, typename Orientation1, typename Orientation2>
void copy_array2d(const T1& src, T2& dst, Orientation1, Orientation2)
{
// note: pitch does not carry over when orientation differs
dst.resize(src.num_rows, src.num_cols);
thrust::counting_iterator<size_t> begin(0);
thrust::counting_iterator<size_t> end(src.num_entries);
// prefer coalesced writes to coalesced reads
cusp::detail::logical_to_other_physical_functor<size_t, Orientation2, Orientation1> func1(src.num_rows, src.num_cols, src.pitch);
cusp::detail::logical_to_physical_functor <size_t, Orientation2> func2(dst.num_rows, dst.num_cols, dst.pitch);
thrust::copy(thrust::make_permutation_iterator(src.values.begin(), thrust::make_transform_iterator(begin, func1)),
thrust::make_permutation_iterator(src.values.begin(), thrust::make_transform_iterator(end, func1)),
thrust::make_permutation_iterator(dst.values.begin(), thrust::make_transform_iterator(begin, func2)));
}
template <typename T1, typename T2>
void copy(const T1& src, T2& dst,
cusp::array2d_format,
cusp::array2d_format)
{
copy_array2d(src, dst,
typename T1::orientation(),
typename T2::orientation());
}
} // end namespace detail
/////////////////
// Entry Point //
/////////////////
template <typename T1, typename T2>
void copy(const T1& src, T2& dst)
{
CUSP_PROFILE_SCOPED();
cusp::detail::copy(src, dst, typename T1::format(), typename T2::format());
}
} // end namespace cusp
|
