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// Copyright (c) 2017-2024 Advanced Micro Devices, Inc. All rights reserved.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
#include "test_common.hpp"
#include <rocrand/rocrand.h>
#include <gtest/gtest.h>
#include <algorithm>
#include <iomanip>
#include <random>
#include <vector>
#define ROCRAND_CHECK(state) ASSERT_EQ(state, ROCRAND_STATUS_SUCCESS)
namespace
{
constexpr const unsigned long long seeds[] = {0, 0xAAAAAAAAAAAULL};
constexpr const size_t seeds_count = sizeof(seeds) / sizeof(seeds[0]);
constexpr const size_t random_seeds_count = 2;
std::vector<unsigned long long> get_seeds()
{
std::vector<unsigned long long> ret(seeds_count + random_seeds_count);
std::copy_n(seeds, seeds_count, ret.begin());
std::default_random_engine rng(std::random_device{}());
std::generate(ret.begin() + seeds_count, ret.end(), [&] { return rng(); });
return ret;
}
struct host_test_params
{
rocrand_rng_type rng_type;
bool blocking_host_generator;
bool use_default_stream;
friend std::ostream& operator<<(std::ostream& os, const host_test_params& params)
{
os << "{ "
<< "rng_type: " << params.rng_type << ", blocking: " << params.blocking_host_generator
<< ", default_stream: " << params.use_default_stream << " }";
return os;
}
};
constexpr host_test_params host_test_params_array[] = {
{ ROCRAND_RNG_PSEUDO_PHILOX4_32_10, false, true},
{ ROCRAND_RNG_PSEUDO_LFSR113, false, true},
{ ROCRAND_RNG_PSEUDO_MRG31K3P, false, true},
{ ROCRAND_RNG_PSEUDO_MRG32K3A, false, true},
{ ROCRAND_RNG_PSEUDO_MT19937, false, true},
{ ROCRAND_RNG_PSEUDO_MTGP32, false, true},
{ ROCRAND_RNG_PSEUDO_THREEFRY2_32_20, false, true},
{ ROCRAND_RNG_PSEUDO_THREEFRY2_64_20, false, true},
{ ROCRAND_RNG_PSEUDO_THREEFRY4_32_20, false, true},
{ ROCRAND_RNG_PSEUDO_THREEFRY4_64_20, false, true},
{ ROCRAND_RNG_PSEUDO_XORWOW, false, true},
{ROCRAND_RNG_QUASI_SCRAMBLED_SOBOL32, false, true},
{ROCRAND_RNG_QUASI_SCRAMBLED_SOBOL64, false, true},
{ ROCRAND_RNG_QUASI_SOBOL32, false, true},
{ ROCRAND_RNG_QUASI_SOBOL64, false, true},
{ ROCRAND_RNG_PSEUDO_XORWOW, false, false},
{ ROCRAND_RNG_PSEUDO_XORWOW, true, false},
{ ROCRAND_RNG_PSEUDO_XORWOW, true, true},
{ ROCRAND_RNG_QUASI_SOBOL32, false, false},
{ ROCRAND_RNG_QUASI_SOBOL32, true, false},
{ ROCRAND_RNG_QUASI_SOBOL32, true, true},
};
} // namespace
class rocrand_generate_host_test : public ::testing::TestWithParam<host_test_params>
{
protected:
void SetUp() override
{
if(GetParam().rng_type == ROCRAND_RNG_PSEUDO_MT19937)
{
ROCRAND_SKIP_SLOW_TEST_IF_NOT_ENABLED();
}
if(!GetParam().use_default_stream)
{
HIP_CHECK(hipStreamCreateWithFlags(&m_custom_stream, hipStreamNonBlocking));
}
}
void TearDown() override
{
if(!GetParam().use_default_stream)
{
HIP_CHECK(hipStreamDestroy(m_custom_stream));
}
}
rocrand_generator get_generator()
{
const auto params = GetParam();
rocrand_generator generator;
if(params.blocking_host_generator)
{
EXPECT_EQ(ROCRAND_STATUS_SUCCESS,
rocrand_create_generator_host_blocking(&generator, params.rng_type));
}
else
{
EXPECT_EQ(ROCRAND_STATUS_SUCCESS,
rocrand_create_generator_host(&generator, params.rng_type));
}
if(!params.use_default_stream)
{
EXPECT_EQ(ROCRAND_STATUS_SUCCESS, rocrand_set_stream(generator, m_custom_stream));
}
return generator;
}
private:
hipStream_t m_custom_stream;
};
void test_int(rocrand_generator generator, const size_t test_size)
{
std::vector<unsigned int> results(test_size);
for(size_t i = 0; i < seeds_count + random_seeds_count; ++i)
{
const auto seed = i < seeds_count ? seeds[i] : rand();
SCOPED_TRACE(testing::Message() << "with seed = " << seed);
ROCRAND_CHECK(rocrand_set_seed(generator, seed));
ROCRAND_CHECK(rocrand_generate(generator, results.data(), results.size()));
// We need this because the generator is async and there is no memcpy
// that implicitly synchronizes here
HIP_CHECK(hipDeviceSynchronize());
double mean = 0.0;
for(unsigned int v : results)
{
mean += v;
}
mean /= static_cast<double>(std::numeric_limits<unsigned int>::max());
mean /= results.size();
ASSERT_NEAR(mean, 0.5, 0.05);
}
ROCRAND_CHECK(rocrand_destroy_generator(generator));
}
TEST_P(rocrand_generate_host_test, int_test)
{
test_int(get_generator(), 11111);
}
TEST_P(rocrand_generate_host_test, int_test_large)
{
ROCRAND_SKIP_SLOW_TEST_IF_NOT_ENABLED();
constexpr size_t large_test_size = size_t(INT_MAX) + 1;
test_int(get_generator(), large_test_size);
}
template<typename Type, typename F>
void test_int_parity(rocrand_generator host_generator,
rocrand_rng_type rng_type,
F generate,
const std::vector<unsigned long long>& seeds = get_seeds())
{
rocrand_generator device_generator;
ROCRAND_CHECK(rocrand_create_generator(&device_generator, rng_type));
std::vector<Type> host_results(218192);
std::vector<Type> device_results(host_results.size());
Type* output;
HIP_CHECK(hipMallocHelper(&output, host_results.size() * sizeof(Type)));
for(const unsigned long long seed : seeds)
{
SCOPED_TRACE(testing::Message() << "with seed = " << seed);
ROCRAND_CHECK(rocrand_set_seed(host_generator, seed));
ROCRAND_CHECK(rocrand_set_seed(device_generator, seed));
ROCRAND_CHECK(generate(host_generator, host_results.data(), host_results.size()));
ROCRAND_CHECK(generate(device_generator, output, host_results.size()));
HIP_CHECK(hipMemcpy(device_results.data(),
output,
host_results.size() * sizeof(Type),
hipMemcpyDeviceToHost));
HIP_CHECK(hipDeviceSynchronize());
assert_eq(host_results, device_results);
}
ROCRAND_CHECK(rocrand_destroy_generator(host_generator));
ROCRAND_CHECK(rocrand_destroy_generator(device_generator));
HIP_CHECK(hipFree(output));
}
TEST_P(rocrand_generate_host_test, char_parity_test)
{
test_int_parity<unsigned char>(get_generator(), GetParam().rng_type, rocrand_generate_char);
}
TEST_P(rocrand_generate_host_test, short_parity_test)
{
test_int_parity<unsigned short>(get_generator(), GetParam().rng_type, rocrand_generate_short);
}
TEST_P(rocrand_generate_host_test, int_parity_test)
{
test_int_parity<unsigned int>(get_generator(), GetParam().rng_type, rocrand_generate);
}
template<typename Type, typename F>
void test_uniform_parity(rocrand_generator host_generator,
rocrand_rng_type rng_type,
F generate,
const std::vector<unsigned long long>& seeds = get_seeds())
{
rocrand_generator device_generator;
ROCRAND_CHECK(rocrand_create_generator(&device_generator, rng_type));
std::vector<Type> host_results(218192);
std::vector<Type> device_results(host_results.size());
Type* output;
HIP_CHECK(hipMallocHelper(&output, host_results.size() * sizeof(Type)));
for(const unsigned long long seed : seeds)
{
SCOPED_TRACE(testing::Message() << "with seed = " << seed);
ROCRAND_CHECK(rocrand_set_seed(host_generator, seed));
ROCRAND_CHECK(rocrand_set_seed(device_generator, seed));
ROCRAND_CHECK(generate(host_generator, host_results.data(), host_results.size()));
ROCRAND_CHECK(generate(device_generator, output, host_results.size()));
HIP_CHECK(hipMemcpy(device_results.data(),
output,
host_results.size() * sizeof(Type),
hipMemcpyDeviceToHost));
HIP_CHECK(hipDeviceSynchronize());
assert_eq(host_results, device_results);
}
ROCRAND_CHECK(rocrand_destroy_generator(host_generator));
ROCRAND_CHECK(rocrand_destroy_generator(device_generator));
HIP_CHECK(hipFree(output));
}
TEST_P(rocrand_generate_host_test, uniform_half_parity_test)
{
test_uniform_parity<half>(get_generator(), GetParam().rng_type, rocrand_generate_uniform_half);
}
TEST_P(rocrand_generate_host_test, uniform_float_parity_test)
{
test_uniform_parity<float>(get_generator(), GetParam().rng_type, rocrand_generate_uniform);
}
TEST_P(rocrand_generate_host_test, uniform_double_parity_test)
{
test_uniform_parity<double>(get_generator(),
GetParam().rng_type,
rocrand_generate_uniform_double);
}
template<typename Type, typename F>
void test_normal_parity(rocrand_generator host_generator,
rocrand_rng_type rng_type,
F generate,
double eps,
const std::vector<unsigned long long>& seeds = get_seeds())
{
if(rng_type == ROCRAND_RNG_PSEUDO_MT19937)
{
ROCRAND_SKIP_SLOW_TEST_IF_NOT_ENABLED();
}
Type mean = static_cast<Type>(-12.0);
Type stddev = static_cast<Type>(2.4);
rocrand_generator device_generator;
ROCRAND_CHECK(rocrand_create_generator(&device_generator, rng_type));
std::vector<Type> host_results(218192);
std::vector<Type> device_results(host_results.size());
Type* output;
HIP_CHECK(hipMallocHelper(&output, host_results.size() * sizeof(Type)));
for(const unsigned long long seed : seeds)
{
SCOPED_TRACE(testing::Message() << "with seed = " << seed);
ROCRAND_CHECK(rocrand_set_seed(host_generator, seed));
ROCRAND_CHECK(rocrand_set_seed(device_generator, seed));
ROCRAND_CHECK(
generate(host_generator, host_results.data(), host_results.size(), mean, stddev));
ROCRAND_CHECK(generate(device_generator, output, host_results.size(), mean, stddev));
HIP_CHECK(hipMemcpy(device_results.data(),
output,
host_results.size() * sizeof(Type),
hipMemcpyDeviceToHost));
HIP_CHECK(hipDeviceSynchronize());
// This rounding is required because the sine and cosine used in box-muller used in the normal
// distribution is slightly different from the one used on the host.
assert_near(host_results, device_results, eps);
}
ROCRAND_CHECK(rocrand_destroy_generator(host_generator));
ROCRAND_CHECK(rocrand_destroy_generator(device_generator));
HIP_CHECK(hipFree(output));
}
TEST_P(rocrand_generate_host_test, normal_half_parity_test)
{
test_normal_parity<half>(get_generator(),
GetParam().rng_type,
rocrand_generate_normal_half,
0.1);
}
TEST_P(rocrand_generate_host_test, normal_float_parity_test)
{
test_normal_parity<float>(get_generator(), GetParam().rng_type, rocrand_generate_normal, 0.005);
}
TEST_P(rocrand_generate_host_test, normal_double_parity_test)
{
test_normal_parity<double>(get_generator(),
GetParam().rng_type,
rocrand_generate_normal_double,
0.000001);
}
TEST_P(rocrand_generate_host_test, log_normal_half_parity_test)
{
test_normal_parity<half>(get_generator(),
GetParam().rng_type,
rocrand_generate_log_normal_half,
0.05);
}
TEST_P(rocrand_generate_host_test, log_normal_float_parity_test)
{
test_normal_parity<float>(get_generator(),
GetParam().rng_type,
rocrand_generate_log_normal,
0.0001);
}
TEST_P(rocrand_generate_host_test, log_normal_double_parity_test)
{
test_normal_parity<double>(get_generator(),
GetParam().rng_type,
rocrand_generate_log_normal_double,
0.0000001);
}
TEST_P(rocrand_generate_host_test, poisson_parity_test)
{
const rocrand_rng_type rng_type = GetParam().rng_type;
using Type = unsigned int;
double lambda = 1.1;
rocrand_generator host_generator = get_generator();
rocrand_generator device_generator;
ROCRAND_CHECK(rocrand_create_generator(&device_generator, rng_type));
std::vector<Type> host_results(218192);
std::vector<Type> device_results(host_results.size());
Type* output;
HIP_CHECK(hipMallocHelper(&output, host_results.size() * sizeof(Type)));
for(const unsigned long long seed : get_seeds())
{
SCOPED_TRACE(testing::Message() << "with seed = " << seed);
ROCRAND_CHECK(rocrand_set_seed(host_generator, seed));
ROCRAND_CHECK(rocrand_set_seed(device_generator, seed));
ROCRAND_CHECK(rocrand_generate_poisson(host_generator,
host_results.data(),
host_results.size(),
lambda));
ROCRAND_CHECK(
rocrand_generate_poisson(device_generator, output, host_results.size(), lambda));
HIP_CHECK(hipMemcpy(device_results.data(),
output,
host_results.size() * sizeof(Type),
hipMemcpyDeviceToHost));
HIP_CHECK(hipDeviceSynchronize());
assert_eq(host_results, device_results);
}
ROCRAND_CHECK(rocrand_destroy_generator(host_generator));
ROCRAND_CHECK(rocrand_destroy_generator(device_generator));
HIP_CHECK(hipFree(output));
}
INSTANTIATE_TEST_SUITE_P(rocrand_generate_host_test,
rocrand_generate_host_test,
::testing::ValuesIn(host_test_params_array));
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