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xtensor/benchmark/benchmark_container.cpp at master · xtensor-stack/xtensor · GitHub
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benchmark_container.cpp
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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
<
chrono
>
#
include
<
cstddef
>
#
include
<
string
>
#
include
<
benchmark/benchmark.h
>
#
include
"
xtensor/containers/xarray.hpp
"
#
include
"
xtensor/containers/xtensor.hpp
"
namespace
xt
{
namespace
axpy_1d
{
//
BENCHMARK Initialization
template
<
class
E
>
inline
void
init_benchmark
(E& x, E& y, E& res,
typename
E::size_type size)
{
x.
resize
({size});
y.
resize
({size});
res.
resize
({size});
using
value_type =
typename
E::value_type;
using
size_type =
typename
E::size_type;
for
(size_type i =
0
; i < size; ++i)
{
x
(i) =
0.5
+
value_type
(i);
y
(i) =
0.25
*
value_type
(i);
}
}
template
<
class
E
>
inline
auto
container_iteration
(benchmark::State& state)
{
using
value_type =
typename
E::value_type;
E x, y, res;
init_benchmark
(x, y, res, state.
range
(
0
));
value_type a =
value_type
(
2.7
);
for
(
auto
_ : state)
{
auto
iterx = x.
begin
();
auto
itery = y.
begin
();
for
(
auto
iter = res.
begin
(); iter != res.
end
(); ++iter, ++iterx, ++itery)
{
*iter = a * (*iterx) + (*itery);
}
}
}
BENCHMARK_TEMPLATE
(container_iteration, xarray_container<std::vector<
double
>>)->
Arg
(
1000
);
BENCHMARK_TEMPLATE
(container_iteration, xarray_container<xt::uvector<
double
>>)->
Arg
(
1000
);
BENCHMARK_TEMPLATE
(container_iteration, xtensor_container<std::vector<
double
>,
1
>)->
Arg
(
1000
);
BENCHMARK_TEMPLATE
(container_iteration, xtensor_container<xt::uvector<
double
>,
1
>)->
Arg
(
1000
);
template
<
class
E
>
inline
auto
container_xiteration
(benchmark::State& state)
{
using
value_type =
typename
E::value_type;
E x, y, res;
init_benchmark
(x, y, res, state.
range
(
0
));
value_type a =
value_type
(
2.7
);
for
(
auto
_ : state)
{
auto
iterx = x.
begin
();
auto
itery = y.
begin
();
for
(
auto
iter = res.
begin
(); iter != res.
end
(); ++iter, ++iterx, ++itery)
{
*iter = a * (*iterx) + (*itery);
}
}
}
BENCHMARK_TEMPLATE
(container_xiteration, xarray_container<std::vector<
double
>>)->
Arg
(
1000
);
BENCHMARK_TEMPLATE
(container_xiteration, xarray_container<xt::uvector<
double
>>)->
Arg
(
1000
);
BENCHMARK_TEMPLATE
(container_xiteration, xtensor_container<std::vector<
double
>,
1
>)->
Arg
(
1000
);
BENCHMARK_TEMPLATE
(container_xiteration, xtensor_container<xt::uvector<
double
>,
1
>)->
Arg
(
1000
);
template
<
class
E
>
inline
auto
container_indexing
(benchmark::State& state)
{
using
size_type =
typename
E::size_type;
using
value_type =
typename
E::value_type;
E x, y, res;
init_benchmark
(x, y, res, state.
range
(
0
));
value_type a =
value_type
(
2.7
);
for
(
auto
_ : state)
{
size_type n = x.
size
();
for
(size_type i =
0
; i < n; ++i)
{
res
(i) = a *
x
(i) +
y
(i);
}
}
}
BENCHMARK_TEMPLATE
(container_indexing, xarray_container<std::vector<
double
>>)->
Arg
(
1000
);
BENCHMARK_TEMPLATE
(container_indexing, xarray_container<xt::uvector<
double
>>)->
Arg
(
1000
);
BENCHMARK_TEMPLATE
(container_indexing, xtensor_container<std::vector<
double
>,
1
>)->
Arg
(
1000
);
BENCHMARK_TEMPLATE
(container_indexing, xtensor_container<xt::uvector<
double
>,
1
>)->
Arg
(
1000
);
}
}
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