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// Copyright (c) 2017-2023 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 <iostream>
#include <vector>
#include <numeric>
#include <algorithm>
#include <hip/hip_runtime.h>
#include <rocprim/rocprim.hpp>
#define HIP_CHECK(condition) \
do \
{ \
hipError_t error = condition; \
if(error != hipSuccess) \
{ \
std::cout << "Error " << hipGetErrorName(error) << '(' << error << ')' << ": " \
<< hipGetErrorString(error) << " in " << __func__ << " at " << __FILE__ \
<< ':' << __LINE__ << '\n'; \
exit(error); \
} \
} \
while(false)
int main(int, char**)
{
using T = unsigned int;
// host input/output
const size_t size = 1024 * 256;
std::vector<T> input(size, 1);
T output = 0;
// device input/output
T * d_input;
T * d_output;
HIP_CHECK(hipMalloc(reinterpret_cast<void**>(&d_input), input.size() * sizeof(T)));
HIP_CHECK(hipMalloc(reinterpret_cast<void**>(&d_output), sizeof(T)));
HIP_CHECK(
hipMemcpy(
d_input, input.data(),
input.size() * sizeof(T),
hipMemcpyHostToDevice
)
);
HIP_CHECK(hipDeviceSynchronize());
// Calculate expected results on host
auto expected = std::accumulate(input.begin(), input.end(), 0U);
// Temporary storage
size_t temp_storage_size_bytes;
void * d_temp_storage = nullptr;
// Get size of d_temp_storage
HIP_CHECK(
rocprim::reduce(
d_temp_storage, temp_storage_size_bytes,
d_input, d_output, input.size()
)
);
// Allocate temporary storage
HIP_CHECK(hipMalloc(&d_temp_storage, temp_storage_size_bytes));
HIP_CHECK(hipDeviceSynchronize());
// Run
HIP_CHECK(
rocprim::reduce(
d_temp_storage, temp_storage_size_bytes,
d_input, d_output, input.size()
)
);
HIP_CHECK(hipDeviceSynchronize());
// Copy output to host
HIP_CHECK(
hipMemcpy(
&output, d_output,
sizeof(T),
hipMemcpyDeviceToHost
)
);
HIP_CHECK(hipDeviceSynchronize());
if(output != expected)
{
std::cout
<< "Failure: output (" << output
<< ") != expected (" << expected << ")"
<< std::endl;
return 1;
}
return 0;
}
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