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/*
* Copyright 2008-2023 NVIDIA Corporation
* Modifications Copyright© 2024 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/functional.h>
#include <thrust/sort.h>
#include "test_header.hpp"
template <typename T>
struct greater_div_10
{
__host__ __device__ bool operator()(const T &lhs, const T &rhs) const
{
return ((int)lhs) / 10 > ((int)rhs) / 10;
}
};
template <unsigned int N>
void _TestStableSortByKeyWithLargeValues()
{
size_t n = (128 * 1024) / sizeof(FixedVector<int, N>);
thrust::host_vector<unsigned int> h_keys(n);
thrust::host_vector<FixedVector<int, N>> h_vals(n);
for (size_t i = 0; i < n; i++)
{
const auto uint_i = static_cast<unsigned int>(i);
const auto rand_int = unittest::generate_random_integer<unsigned int>()(uint_i);
h_keys[i] = rand_int;
h_vals[i] = FixedVector<int, N>(static_cast<int>(i));
}
thrust::device_vector<unsigned int> d_keys = h_keys;
thrust::device_vector<FixedVector<int, N>> d_vals = h_vals;
thrust::stable_sort_by_key(h_keys.begin(), h_keys.end(), h_vals.begin());
thrust::stable_sort_by_key(d_keys.begin(), d_keys.end(), d_vals.begin());
ASSERT_EQ_QUIET(h_keys, d_keys);
ASSERT_EQ_QUIET(h_vals, d_vals);
// so cuda::stable_merge_sort_by_key() is called
thrust::stable_sort_by_key(h_keys.begin(),
h_keys.end(),
h_vals.begin(),
greater_div_10<unsigned int>());
thrust::stable_sort_by_key(d_keys.begin(),
d_keys.end(),
d_vals.begin(),
greater_div_10<unsigned int>());
ASSERT_EQ_QUIET(h_keys, d_keys);
ASSERT_EQ_QUIET(h_vals, d_vals);
}
TEST(StableSortByKeyLargeTests, TestStableSortByKeyWithLargeValues)
{
SCOPED_TRACE(testing::Message() << "with device_id= " << test::set_device_from_ctest());
_TestStableSortByKeyWithLargeValues<4>();
_TestStableSortByKeyWithLargeValues<8>();
_TestStableSortByKeyWithLargeValues<16>();
}
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