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tensor_norm.h
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25 #pragma once
26
27 #include <cmath>
28
29 #include "cutlass/cutlass.h"
30 #include "cutlass/complex.h"
31 #include "cutlass/tensor_ref.h"
32
33 #include "cutlass/util/reference/host/tensor_foreach.h"
34
35 namespace cutlass {
36 namespace reference {
37 namespace host {
38
40
42 template <
43 typename Element,
44 typename Layout,
45 typename ElementReduction
46 >
47 ElementReduction TensorNorm(
48 TensorView<Element, Layout> view,
49 ElementReduction accumulator) {
50
51 TensorForEachLambda(
52 view.extent(),
53 [&](typename Layout::TensorCoord const & coord) {
54 Element element = Element(view.at(coord));
55 accumulator = cutlass::norm_accumulate(element, accumulator);
56 });
57 return std::sqrt(accumulator);
58 }
59
61 template <
62 typename Element,
63 typename Layout
64 >
65 double TensorNorm(TensorView<Element, Layout> view) {
66
67 return TensorNorm<Element, Layout, double>(view, 0);
68 }
69
71
72 } // namespace host
73 } // namespace reference
74 } // namespace cutlass
75
cutlass
Definition: aligned_buffer.h:35
cutlass::reference::host::TensorNorm
ElementReduction TensorNorm(TensorView< Element, Layout > view, ElementReduction accumulator)
Computes the p=2 norm of the elements of a tensor with arbitrary reduction data type.
Definition: tensor_norm.h:47
tensor_ref.h
Defines a structure containing strides, bounds, and a pointer to tensor data.
complex.h
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
cutlass::norm_accumulate
CUTLASS_HOST_DEVICE R norm_accumulate(T const &x, R const &accumulator)
Norm-accumulate calculation.
Definition: complex.h:343
cutlass::TensorView< Element, Layout >
cutlass::reference::host::TensorForEachLambda
void TensorForEachLambda(Coord< Rank > extent, Func func)
Iterates over the index space of a tensor and calls a C++ lambda.
Definition: host/tensor_foreach.h:98
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.h
Basic include for CUTLASS.
cutlass::sqrt
CUTLASS_HOST_DEVICE complex< T > sqrt(complex< T > const &z)
Computes the square root of complex number z.
Definition: complex.h:393
tensor_foreach.h