tensor_norm.h
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#pragma once
#include <cmath>
#include "cutlass/cutlass.h"
#include "cutlass/complex.h"
#include "cutlass/tensor_ref.h"
#include "cutlass/util/reference/host/tensor_foreach.h"
namespace cutlass {
namespace reference {
namespace host {
template <
typename Element,
typename Layout,
typename ElementReduction
>
ElementReduction TensorNorm(
TensorView<Element, Layout> view,
ElementReduction accumulator) {
TensorForEachLambda(
view.extent(),
[&](typename Layout::TensorCoord const & coord) {
Element element = Element(view.at(coord));
accumulator = cutlass::norm_accumulate(element, accumulator);
});
return std::sqrt(accumulator);
}
template <
typename Element,
typename Layout
>
double TensorNorm(TensorView<Element, Layout> view) {
return TensorNorm<Element, Layout, double>(view, 0);
}
} // namespace host
} // namespace reference
} // namespace cutlass
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