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tensor_view_io.h
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25 #pragma once
26
27 #include "cutlass/core_io.h"
28 #include "cutlass/tensor_view.h"
29
30 namespace cutlass {
31
33
34 namespace detail {
35
37 template <
38 typename Element,
39 typename Layout
40 >
41 inline std::ostream & TensorView_WriteLeastSignificantRank(
42 std::ostream& out,
43 TensorView<Element, Layout> const& view,
44 Coord<Layout::kRank> const &start_coord,
45 int rank,
46 std::streamsize width) {
47
48 for (int idx = 0; idx < view.extent(rank); ++idx) {
49
50 Coord<Layout::kRank> coord(start_coord);
51 coord[rank] = idx;
52
53 if (idx) {
54 out.width(0);
55 out << ", ";
56 }
57 if (idx || coord) {
58 out.width(width);
59 }
60 out << ScalarIO<Element>(view.at(coord));
61 }
62
63 return out;
64 }
65
67 template <
68 typename Element,
69 typename Layout
70 >
71 inline std::ostream & TensorView_WriteRank(
72 std::ostream& out,
73 TensorView<Element, Layout> const& view,
74 Coord<Layout::kRank> const &start_coord,
75 int rank,
76 std::streamsize width) {
77
78 // If called on the least significant rank, write the result as a row
79 if (rank + 1 == Layout::kRank) {
80 return TensorView_WriteLeastSignificantRank(out, view, start_coord, rank, width);
81 }
82
83 // Otherwise, write a sequence of rows and newlines
84 for (int idx = 0; idx < view.extent(rank); ++idx) {
85
86 Coord<Layout::kRank> coord(start_coord);
87 coord[rank] = idx;
88
89 if (rank + 2 == Layout::kRank) {
90 // Write least significant ranks asa matrix with rows delimited by ";\n"
91 out << (idx ? ";\n" : "");
92 TensorView_WriteLeastSignificantRank(out, view, coord, rank + 1, width);
93 }
94 else {
95 // Higher ranks are separated by newlines
96 out << (idx ? "\n" : "");
97 TensorView_WriteRank(out, view, coord, rank + 1, width);
98 }
99 }
100
101 return out;
102 }
103
104 } // namespace detail
105
107
109 template <
110 typename Element,
111 typename Layout
112 >
113 inline std::ostream& TensorViewWrite(
114 std::ostream& out,
115 TensorView<Element, Layout> const& view) {
116
117 // Prints a TensorView according to the following conventions:
118 // - least significant rank is printed as rows separated by ";\n"
119 // - all greater ranks are delimited with newlines
120 //
121 // The result is effectively a whitespace-delimited series of 2D matrices.
122
123 return detail::TensorView_WriteRank(out, view, Coord<Layout::kRank>(), 0, out.width());
124 }
125
127 template <
128 typename Element,
129 typename Layout
130 >
131 inline std::ostream& operator<<(
132 std::ostream& out,
133 TensorView<Element, Layout> const& view) {
134
135 // Prints a TensorView according to the following conventions:
136 // - least significant rank is printed as rows separated by ";\n"
137 // - all greater ranks are delimited with newlines
138 //
139 // The result is effectively a whitespace-delimited series of 2D matrices.
140
141 return TensorViewWrite(out, view);
142 }
143
145
146 } // namespace cutlass
core_io.h
Helpers for printing cutlass/core objects.
cutlass
Definition: aligned_buffer.h:35
cutlass::TensorView::extent
CUTLASS_HOST_DEVICE TensorCoord const & extent() const
Returns the extent of the view (the size along each logical dimension).
Definition: tensor_view.h:167
tensor_view.h
Defines a structure containing strides and a pointer to tensor data.
cutlass::TensorViewWrite
std::ostream & TensorViewWrite(std::ostream &out, TensorView< Element, Layout > const &view)
Prints human-readable representation of a TensorView to an ostream.
Definition: tensor_view_io.h:113
cutlass::detail::TensorView_WriteLeastSignificantRank
std::ostream & TensorView_WriteLeastSignificantRank(std::ostream &out, TensorView< Element, Layout > const &view, Coord< Layout::kRank > const &start_coord, int rank, std::streamsize width)
Helper to write the least significant rank of a TensorView.
Definition: tensor_view_io.h:41
cutlass::TensorView< Element, Layout >
cutlass::Coord< Layout::kRank >
cutlass::TensorRef::at
CUTLASS_HOST_DEVICE Reference at(TensorCoord const &coord) const
Returns a reference to the element at a given Coord.
Definition: tensor_ref.h:307
cutlass::operator<<
std::ostream & operator<<(std::ostream &out, complex< T > const &z)
Definition: complex.h:291
cutlass::detail::TensorView_WriteRank
std::ostream & TensorView_WriteRank(std::ostream &out, TensorView< Element, Layout > const &view, Coord< Layout::kRank > const &start_coord, int rank, std::streamsize width)
Helper to write a rank of a TensorView.
Definition: tensor_view_io.h:71