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main_benchmark.cpp
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Created
Fri, Sep 20, 09:43
Size
2 KB
Mime Type
text/x-c++
Expires
Sun, Sep 22, 09:43 (2 d)
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blob
Format
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Handle
20931796
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R12667 gbench-stream
main_benchmark.cpp
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/* -------------------------------------------------------------------------- */
#include <aka_iterators.hh>
#include <algorithm>
#include <benchmark/benchmark.h>
//#include <execution>
#include <vector>
//#include <tbb/tbb.h>
/* -------------------------------------------------------------------------- */
using
namespace
akantu
;
template
<
class
T
>
struct
uninitialized
{
uninitialized
()
{}
uninitialized
(
const
T
&
t
)
:
t
(
t
)
{}
constexpr
uninitialized
&
operator
=
(
const
T
&
t
)
noexcept
{
this
->
t
=
t
;
return
*
this
;
}
constexpr
operator
T
&
()
noexcept
{
return
this
->
t
;
}
T
t
;
};
class
MyFixture
:
public
benchmark
::
Fixture
{
using
stream_type
=
int
;
public
:
void
SetUp
(
::
benchmark
::
State
&
state
)
{
auto
&&
size
=
state
.
range
(
0
)
*
1024
/
sizeof
(
stream_type
);
A
.
resize
(
size
);
B
.
resize
(
size
);
// nthreads = oneapi::tbb::this_task_arena::max_concurrency();
state
.
counters
[
"size_kb"
]
=
A
.
size
()
*
sizeof
(
typename
decltype
(
A
)
::
value_type
)
/
1024
;
state
.
counters
[
"nthreads"
]
=
nthreads
;
auto
view
=
enumerate
(
A
,
B
);
std
::
for_each
(
view
.
begin
(),
view
.
end
(),
[](
auto
&&
data
)
{
std
::
get
<
1
>
(
data
)
=
2.
*
std
::
get
<
0
>
(
data
);
std
::
get
<
2
>
(
data
)
=
0.
;
});
}
void
TearDown
(
const
::
benchmark
::
State
&
/*state*/
)
{}
std
::
vector
<
stream_type
>
A
;
std
::
vector
<
stream_type
>
B
;
int
nthreads
{
0
};
};
BENCHMARK_DEFINE_F
(
MyFixture
,
CopyZip
)(
benchmark
::
State
&
st
)
{
auto
view
=
zip
(
A
,
B
);
for
(
auto
_
:
st
)
{
std
::
for_each
(
view
.
begin
(),
view
.
end
(),
[](
auto
&&
data
)
{
std
::
get
<
1
>
(
data
)
=
std
::
get
<
0
>
(
data
);
});
}
st
.
SetBytesProcessed
(
int64_t
(
st
.
iterations
())
*
A
.
size
()
*
sizeof
(
typename
decltype
(
A
)
::
value_type
)
*
2
);
}
BENCHMARK_REGISTER_F
(
MyFixture
,
CopyZip
)
->
RangeMultiplier
(
2
)
->
Range
(
2
,
1
<<
18
);
BENCHMARK_DEFINE_F
(
MyFixture
,
Copy
)(
benchmark
::
State
&
st
)
{
for
(
auto
_
:
st
)
{
for
(
auto
i
=
0
;
i
<
A
.
size
();
++
i
)
{
B
[
i
]
=
A
[
i
];
}
}
st
.
SetBytesProcessed
(
int64_t
(
st
.
iterations
())
*
A
.
size
()
*
sizeof
(
typename
decltype
(
A
)
::
value_type
)
*
2
);
}
BENCHMARK_REGISTER_F
(
MyFixture
,
Copy
)
->
RangeMultiplier
(
2
)
->
Range
(
2
,
1
<<
18
);
BENCHMARK_MAIN
();
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