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xtensor/benchmark/benchmark_stl.cpp at master · xtensor-stack/xtensor · GitHub
xtensor-stack
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/*
**************************************************************************
* Copyright (c) 2016, Johan Mabille, Sylvain Corlay and Wolf Vollprecht *
* *
* Distributed under the terms of the BSD 3-Clause License. *
* *
* The full license is in the file LICENSE, distributed with this software. *
***************************************************************************
*/
#
include
<
benchmark/benchmark.h
>
#
include
"
xtensor/containers/xtensor.hpp
"
#
include
"
xtensor/core/xmath.hpp
"
#
include
"
xtensor/generators/xrandom.hpp
"
namespace
xt
{
namespace
{
constexpr
std::array<
size_t
,
2
> cContainerAssignShape{
2000
,
2000
};
template
<
class
Shape
>
auto
generateRandomInt16From0To100
(Shape&& x)
{
return
xt::random::randint
(x,
0
,
100
);
}
}
static
void
Xtensor_Uint16_2000x2000_DivideBy2_StdTransform
(benchmark::State& aState)
{
xt::xtensor<
uint16_t
,
2
> vInput =
generateRandomInt16From0To100
(cContainerAssignShape);
auto
vOutput = xt::xtensor<
uint16_t
,
2
>::
from_shape
(cContainerAssignShape);
for
(
auto
_ : aState)
{
std::transform
(
vInput.
begin
(),
vInput.
end
(),
vOutput.
begin
(),
[](
auto
&& aInputValue)
{
return
aInputValue /
2
;
}
);
}
}
static
void
Xtensor_Uint16_2000x2000_DivideBy2_Xtensor
(benchmark::State& aState)
{
xt::xtensor<
uint16_t
,
2
> vInput =
generateRandomInt16From0To100
(cContainerAssignShape);
auto
vOutput = xt::xtensor<
uint16_t
,
2
>::
from_shape
(cContainerAssignShape);
for
(
auto
_ : aState)
{
vOutput = vInput /
2
;
}
}
static
void
Xtensor_Uint16_2000x2000_DivideBy2Double_StdTransform
(benchmark::State& aState)
{
xt::xtensor<
uint16_t
,
2
> vInput =
generateRandomInt16From0To100
(cContainerAssignShape);
auto
vOutput = xt::xtensor<
uint16_t
,
2
>::
from_shape
(cContainerAssignShape);
for
(
auto
_ : aState)
{
std::transform
(
vInput.
begin
(),
vInput.
end
(),
vOutput.
begin
(),
[](
auto
&& aInputValue)
{
return
aInputValue /
2.0
;
}
);
}
}
static
void
Xtensor_Uint16_2000x2000_DivideBy2Double_Xtensor
(benchmark::State& aState)
{
xt::xtensor<
uint16_t
,
2
> vInput =
generateRandomInt16From0To100
(cContainerAssignShape);
auto
vOutput = xt::xtensor<
uint16_t
,
2
>::
from_shape
(cContainerAssignShape);
for
(
auto
_ : aState)
{
vOutput = vInput /
2.0
;
}
}
static
void
Xtensor_Uint16_2000x2000_MultiplyBy2_StdTransform
(benchmark::State& aState)
{
xt::xtensor<
uint16_t
,
2
> vInput =
generateRandomInt16From0To100
(cContainerAssignShape);
auto
vOutput = xt::xtensor<
uint16_t
,
2
>::
from_shape
(cContainerAssignShape);
for
(
auto
_ : aState)
{
std::transform
(
vInput.
begin
(),
vInput.
end
(),
vOutput.
begin
(),
[](
auto
&& aInputValue)
{
return
aInputValue *
2
;
}
);
}
}
static
void
Xtensor_Uint16_2000x2000_MultiplyBy2_Xtensor
(benchmark::State& aState)
{
xt::xtensor<
uint16_t
,
2
> vInput =
generateRandomInt16From0To100
(cContainerAssignShape);
auto
vOutput = xt::xtensor<
uint16_t
,
2
>::
from_shape
(cContainerAssignShape);
for
(
auto
_ : aState)
{
vOutput = vInput *
2
;
}
}
static
void
Xtensor_Uint16_2000x2000_Maximum_StdTransform
(benchmark::State& aState)
{
xt::xtensor<
uint16_t
,
2
> vInput1 =
generateRandomInt16From0To100
(cContainerAssignShape);
xt::xtensor<
uint16_t
,
2
> vInput2 =
generateRandomInt16From0To100
(cContainerAssignShape);
auto
vOutput = xt::xtensor<
uint16_t
,
2
>::
from_shape
(cContainerAssignShape);
for
(
auto
_ : aState)
{
auto
vInput2It = vInput2.
begin
();
std::transform
(
vInput1.
begin
(),
vInput1.
end
(),
vOutput.
begin
(),
[&vInput2It](
auto
&& aInput1Value)
{
return
std::max
(aInput1Value, *vInput2It++);
}
);
}
}
static
void
Xtensor_Uint16_2000x2000_Maximum_Xtensor
(benchmark::State& aState)
{
xt::xtensor<
uint16_t
,
2
> vInput1 =
generateRandomInt16From0To100
(cContainerAssignShape);
xt::xtensor<
uint16_t
,
2
> vInput2 =
generateRandomInt16From0To100
(cContainerAssignShape);
auto
vOutput = xt::xtensor<
uint16_t
,
2
>::
from_shape
(cContainerAssignShape);
for
(
auto
_ : aState)
{
vOutput =
xt::maximum
(vInput1, vInput2);
}
}
BENCHMARK
(Xtensor_Uint16_2000x2000_Maximum_Xtensor);
BENCHMARK
(Xtensor_Uint16_2000x2000_Maximum_StdTransform);
BENCHMARK
(Xtensor_Uint16_2000x2000_MultiplyBy2_Xtensor);
BENCHMARK
(Xtensor_Uint16_2000x2000_MultiplyBy2_StdTransform);
BENCHMARK
(Xtensor_Uint16_2000x2000_DivideBy2Double_Xtensor);
BENCHMARK
(Xtensor_Uint16_2000x2000_DivideBy2Double_StdTransform);
}
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