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/*
* Copyright 2008-2013 NVIDIA Corporation
* Modifications Copyright© 2019 Advanced Micro Devices, Inc. All rights reserved.
*
* 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 <thrust/device_vector.h>
#include <thrust/host_vector.h>
#include <thrust/iterator/discard_iterator.h>
#include <thrust/iterator/retag.h>
#include <thrust/sequence.h>
#include "test_header.hpp"
TESTS_DEFINE(SequenceTests, FullTestsParams);
TESTS_DEFINE(PrimitiveSequenceTests, NumericalTestsParams);
TEST(SequenceTests, UsingHip)
{
SCOPED_TRACE(testing::Message() << "with device_id= " << test::set_device_from_ctest());
ASSERT_EQ(THRUST_DEVICE_SYSTEM, THRUST_DEVICE_SYSTEM_HIP);
}
template <typename ForwardIterator>
void sequence(my_system& system, ForwardIterator, ForwardIterator)
{
system.validate_dispatch();
}
TEST(SequenceTests, SequenceDispatchExplicit)
{
SCOPED_TRACE(testing::Message() << "with device_id= " << test::set_device_from_ctest());
thrust::device_vector<int> vec(1);
my_system sys(0);
thrust::sequence(sys, vec.begin(), vec.end());
ASSERT_EQ(true, sys.is_valid());
}
template <typename ForwardIterator>
void sequence(my_tag, ForwardIterator first, ForwardIterator)
{
*first = 13;
}
TEST(SequenceTests, SequenceDispatchImplicit)
{
SCOPED_TRACE(testing::Message() << "with device_id= " << test::set_device_from_ctest());
thrust::device_vector<int> vec(1);
thrust::sequence(thrust::retag<my_tag>(vec.begin()), thrust::retag<my_tag>(vec.end()));
ASSERT_EQ(13, vec.front());
}
TYPED_TEST(SequenceTests, SequenceSimple)
{
using Vector = typename TestFixture::input_type;
using Policy = typename TestFixture::execution_policy;
using T = typename Vector::value_type;
SCOPED_TRACE(testing::Message() << "with device_id= " << test::set_device_from_ctest());
Vector v(5);
thrust::sequence(Policy{}, v.begin(), v.end());
ASSERT_EQ(v[0], 0);
ASSERT_EQ(v[1], 1);
ASSERT_EQ(v[2], 2);
ASSERT_EQ(v[3], 3);
ASSERT_EQ(v[4], 4);
thrust::sequence(Policy{}, v.begin(), v.end(), (T)10);
ASSERT_EQ(v[0], 10);
ASSERT_EQ(v[1], 11);
ASSERT_EQ(v[2], 12);
ASSERT_EQ(v[3], 13);
ASSERT_EQ(v[4], 14);
thrust::sequence(Policy{}, v.begin(), v.end(), (T)10, (T)2);
ASSERT_EQ(v[0], 10);
ASSERT_EQ(v[1], 12);
ASSERT_EQ(v[2], 14);
ASSERT_EQ(v[3], 16);
ASSERT_EQ(v[4], 18);
}
TYPED_TEST(PrimitiveSequenceTests, SequencesWithVariableLength)
{
using T = typename TestFixture::input_type;
SCOPED_TRACE(testing::Message() << "with device_id= " << test::set_device_from_ctest());
T error_margin = (T)0.01;
for(auto size : get_sizes())
{
size_t step_size = (size * 0.01) + 1;
thrust::host_vector<T> h_data(size);
thrust::device_vector<T> d_data(size);
thrust::sequence(h_data.begin(), h_data.end());
thrust::sequence(d_data.begin(), d_data.end());
thrust::host_vector<T> h_data_d = d_data;
for(size_t i = 0; i < size; i += step_size)
ASSERT_NEAR(h_data[i], h_data_d[i], error_margin);
thrust::sequence(h_data.begin(), h_data.end(), T(10));
thrust::sequence(d_data.begin(), d_data.end(), T(10));
h_data_d = d_data;
for(size_t i = 0; i < size; i += step_size)
ASSERT_NEAR(h_data[i], h_data_d[i], error_margin);
thrust::sequence(h_data.begin(), h_data.end(), T(10), T(2));
thrust::sequence(d_data.begin(), d_data.end(), T(10), T(2));
h_data_d = d_data;
for(size_t i = 0; i < size; i += step_size)
ASSERT_NEAR(h_data[i], h_data_d[i], error_margin);
thrust::sequence(h_data.begin(), h_data.end(), size_t(10), size_t(2));
thrust::sequence(d_data.begin(), d_data.end(), size_t(10), size_t(2));
h_data_d = d_data;
for(size_t i = 0; i < size; i += step_size)
ASSERT_NEAR(h_data[i], h_data_d[i], error_margin);
}
}
TYPED_TEST(PrimitiveSequenceTests, SequenceToDiscardIterator)
{
using T = typename TestFixture::input_type;
SCOPED_TRACE(testing::Message() << "with device_id= " << test::set_device_from_ctest());
for(auto size : get_sizes())
{
thrust::host_vector<T> h_data(size);
thrust::device_vector<T> d_data(size);
thrust::sequence(thrust::discard_iterator<thrust::device_system_tag>(),
thrust::discard_iterator<thrust::device_system_tag>(13),
T(10),
T(2));
}
// nothing to check -- just make sure it compiles
}
// A class that doesnt accept conversion from size_t but can be multiplied by a scalar
struct Vector
{
Vector() = default;
// Explicitly disable construction from size_t
Vector(std::size_t) = delete;
__host__ __device__ Vector(int x_, int y_) : x{x_}, y{y_} {}
Vector(const Vector&) = default;
Vector &operator=(const Vector&) = default;
int x, y;
};
// Vector-Vector addition
__host__ __device__ Vector operator+(const Vector a, const Vector b) { return Vector{a.x + b.x, a.y + b.y}; }
// Vector-Scalar Multiplication
__host__ __device__ Vector operator*(const int a, const Vector b) { return Vector{a * b.x, a * b.y}; }
__host__ __device__ Vector operator*(const Vector b, const int a) { return Vector{a * b.x, a * b.y}; }
TEST(SequenceTests, TestSequenceNoSizeTConversion)
{
thrust::device_vector<Vector> m(64);
thrust::sequence(m.begin(), m.end(), ::Vector{0, 0}, ::Vector{1, 2});
for (std::size_t i = 0; i < m.size(); ++i)
{
const ::Vector v = m[i];
ASSERT_EQ(static_cast<std::size_t>(v.x), i);
ASSERT_EQ(static_cast<std::size_t>(v.y), 2 * i);
}
}
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