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test: Reduce coupling to CUDA backend #9

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Oct 28, 2019
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test: Reduce coupling to CUDA backend #9

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524d462
iterator: Reduce coupling in unit test and port it to a .cpp file
stotko Oct 28, 2019
08a5042
bit: Split backend-specific part of the unit test into dedicated file…
stotko Oct 28, 2019
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5 changes: 3 additions & 2 deletions test/stdgpu/CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -2,15 +2,16 @@
add_executable(teststdgpu main.cpp)

target_sources(teststdgpu PRIVATE cuda/atomic.cu
cuda/bit.cu
algorithm.cpp
atomic.cu
bit.cu
bit.cpp
bitset.cu
cmath.cpp
cstdlib.cpp
deque.cu
functional.cpp
iterator.cu
iterator.cpp
limits.cpp
memory.cpp
memory.cu
Expand Down
100 changes: 3 additions & 97 deletions test/stdgpu/bit.cu → test/stdgpu/bit.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -15,19 +15,13 @@

#include <gtest/gtest.h>

#include <algorithm>
#include <limits>
#include <random>
#include <thread>
#include <type_traits>
#include <unordered_set>
#include <thrust/sequence.h>
#include <thrust/transform.h>

#include <test_utils.h>
#include <stdgpu/bit.h>
#include <stdgpu/iterator.h>
#include <stdgpu/memory.h>



Expand Down Expand Up @@ -137,123 +131,35 @@ TEST_F(stdgpu_bit, mod2_one_zero)
}


TEST_F(stdgpu_bit, log2pow2_host)
TEST_F(stdgpu_bit, log2pow2)
{
for (size_t i = 0; i < std::numeric_limits<size_t>::digits; ++i)
{
EXPECT_EQ(stdgpu::log2pow2(static_cast<size_t>(1) << i), static_cast<size_t>(i));
}
}

struct log2pow2_functor
{
STDGPU_HOST_DEVICE size_t
operator()(const size_t i) const
{
return stdgpu::log2pow2(static_cast<size_t>(1) << i);
}
};

TEST_F(stdgpu_bit, log2pow2_device)
{
size_t* powers = createDeviceArray<size_t>(std::numeric_limits<size_t>::digits);
thrust::sequence(stdgpu::device_begin(powers), stdgpu::device_end(powers));

thrust::transform(stdgpu::device_begin(powers), stdgpu::device_end(powers),
stdgpu::device_begin(powers),
log2pow2_functor());

size_t* host_powers = copyCreateDevice2HostArray<size_t>(powers, std::numeric_limits<size_t>::digits);

for (size_t i = 0; i < std::numeric_limits<size_t>::digits; ++i)
{
EXPECT_EQ(host_powers[i], static_cast<size_t>(i));
}

destroyDeviceArray<size_t>(powers);
destroyHostArray<size_t>(host_powers);
}


TEST_F(stdgpu_bit, popcount_zero)
{
EXPECT_EQ(stdgpu::popcount(static_cast<size_t>(0)), 0);
}


TEST_F(stdgpu_bit, popcount_pow2_host)
TEST_F(stdgpu_bit, popcount_pow2)
{
for (size_t i = 0; i < std::numeric_limits<size_t>::digits; ++i)
{
EXPECT_EQ(stdgpu::popcount(static_cast<size_t>(1) << i), 1);
}
}

struct popcount_pow2
{
STDGPU_HOST_DEVICE size_t
operator()(const size_t i) const
{
return stdgpu::popcount(static_cast<size_t>(1) << i);
}
};

TEST_F(stdgpu_bit, popcount_pow2_device)
{
size_t* powers = createDeviceArray<size_t>(std::numeric_limits<size_t>::digits);
thrust::sequence(stdgpu::device_begin(powers), stdgpu::device_end(powers));

thrust::transform(stdgpu::device_begin(powers), stdgpu::device_end(powers),
stdgpu::device_begin(powers),
popcount_pow2());

size_t* host_powers = copyCreateDevice2HostArray<size_t>(powers, std::numeric_limits<size_t>::digits);

for (size_t i = 0; i < std::numeric_limits<size_t>::digits; ++i)
{
EXPECT_EQ(host_powers[i], 1);
}

destroyDeviceArray<size_t>(powers);
destroyHostArray<size_t>(host_powers);
}


TEST_F(stdgpu_bit, popcount_pow2m1_host)
TEST_F(stdgpu_bit, popcount_pow2m1)
{
for (size_t i = 0; i < std::numeric_limits<size_t>::digits; ++i)
{
EXPECT_EQ(stdgpu::popcount((static_cast<size_t>(1) << i) - 1), i);
}
}


struct popcount_pow2m1
{
STDGPU_HOST_DEVICE size_t
operator()(const size_t i) const
{
return stdgpu::popcount((static_cast<size_t>(1) << i) - 1);
}
};

TEST_F(stdgpu_bit, popcount_pow2m1_device)
{
size_t* powers = createDeviceArray<size_t>(std::numeric_limits<size_t>::digits);
thrust::sequence(stdgpu::device_begin(powers), stdgpu::device_end(powers));

thrust::transform(stdgpu::device_begin(powers), stdgpu::device_end(powers),
stdgpu::device_begin(powers),
popcount_pow2m1());

size_t* host_powers = copyCreateDevice2HostArray<size_t>(powers, std::numeric_limits<size_t>::digits);

for (size_t i = 0; i < std::numeric_limits<size_t>::digits; ++i)
{
EXPECT_EQ(host_powers[i], i);
}

destroyDeviceArray<size_t>(powers);
destroyHostArray<size_t>(host_powers);
}

133 changes: 133 additions & 0 deletions test/stdgpu/cuda/bit.cu
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Original file line number Diff line number Diff line change
@@ -0,0 +1,133 @@
/*
* Copyright 2019 Patrick Stotko
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/

#include <gtest/gtest.h>

#include <thrust/sequence.h>
#include <thrust/transform.h>

#include <stdgpu/bit.h>
#include <stdgpu/iterator.h>
#include <stdgpu/memory.h>



class stdgpu_cuda_bit : public ::testing::Test
{
protected:
// Called before each test
virtual void SetUp()
{

}

// Called after each test
virtual void TearDown()
{

}

};


struct log2pow2_functor
{
STDGPU_DEVICE_ONLY size_t
operator()(const size_t i) const
{
return stdgpu::cuda::log2pow2(static_cast<unsigned long long>(1) << i);
}
};

TEST_F(stdgpu_cuda_bit, log2pow2)
{
size_t* powers = createDeviceArray<size_t>(std::numeric_limits<size_t>::digits);
thrust::sequence(stdgpu::device_begin(powers), stdgpu::device_end(powers));

thrust::transform(stdgpu::device_begin(powers), stdgpu::device_end(powers),
stdgpu::device_begin(powers),
log2pow2_functor());

size_t* host_powers = copyCreateDevice2HostArray<size_t>(powers, std::numeric_limits<size_t>::digits);

for (size_t i = 0; i < std::numeric_limits<size_t>::digits; ++i)
{
EXPECT_EQ(host_powers[i], static_cast<size_t>(i));
}

destroyDeviceArray<size_t>(powers);
destroyHostArray<size_t>(host_powers);
}


struct popcount_pow2
{
STDGPU_DEVICE_ONLY size_t
operator()(const size_t i) const
{
return stdgpu::cuda::popcount(static_cast<unsigned long long>(1) << i);
}
};

TEST_F(stdgpu_cuda_bit, popcount_pow2)
{
size_t* powers = createDeviceArray<size_t>(std::numeric_limits<size_t>::digits);
thrust::sequence(stdgpu::device_begin(powers), stdgpu::device_end(powers));

thrust::transform(stdgpu::device_begin(powers), stdgpu::device_end(powers),
stdgpu::device_begin(powers),
popcount_pow2());

size_t* host_powers = copyCreateDevice2HostArray<size_t>(powers, std::numeric_limits<size_t>::digits);

for (size_t i = 0; i < std::numeric_limits<size_t>::digits; ++i)
{
EXPECT_EQ(host_powers[i], 1);
}

destroyDeviceArray<size_t>(powers);
destroyHostArray<size_t>(host_powers);
}


struct popcount_pow2m1
{
STDGPU_DEVICE_ONLY size_t
operator()(const size_t i) const
{
return stdgpu::popcount((static_cast<size_t>(1) << i) - 1);
}
};

TEST_F(stdgpu_cuda_bit, popcount_pow2m1)
{
size_t* powers = createDeviceArray<size_t>(std::numeric_limits<size_t>::digits);
thrust::sequence(stdgpu::device_begin(powers), stdgpu::device_end(powers));

thrust::transform(stdgpu::device_begin(powers), stdgpu::device_end(powers),
stdgpu::device_begin(powers),
popcount_pow2m1());

size_t* host_powers = copyCreateDevice2HostArray<size_t>(powers, std::numeric_limits<size_t>::digits);

for (size_t i = 0; i < std::numeric_limits<size_t>::digits; ++i)
{
EXPECT_EQ(host_powers[i], i);
}

destroyDeviceArray<size_t>(powers);
destroyHostArray<size_t>(host_powers);
}

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