Istvan Kiss
197f73dac9
* Add examples to tools folder * Correct P2P memory access section * Sync poriting guide * Add HIP Graph tutorial * Add hint about using amdgpu-dkms for IPC API * Add a few more env variables
59 行
2.1 KiB
C++
59 行
2.1 KiB
C++
// MIT License
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//
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// Copyright (c) 2025 Advanced Micro Devices, Inc. All rights reserved.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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#include "example_utils.hpp"
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#include <hip/hip_runtime.h>
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#include <cstddef>
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#include <cstdlib>
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#include <iostream>
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int main()
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{
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// [sphinx-start]
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std::size_t elements = 1 << 20;
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std::size_t size_bytes = elements * sizeof(int);
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// allocate host and device memory
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int *host_pointer = new int[elements];
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int *device_input, *device_result;
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HIP_CHECK(hipMalloc(&device_input, size_bytes));
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HIP_CHECK(hipMalloc(&device_result, size_bytes));
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// copy from host to the device
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HIP_CHECK(hipMemcpy(device_input, host_pointer, size_bytes, hipMemcpyHostToDevice));
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// Use memory on the device, i.e. execute kernels
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// copy from device to host, to e.g. get results from the kernel
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HIP_CHECK(hipMemcpy(host_pointer, device_result, size_bytes, hipMemcpyDeviceToHost));
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// free memory when not needed any more
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HIP_CHECK(hipFree(device_result));
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HIP_CHECK(hipFree(device_input));
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delete[] host_pointer;
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// [sphinx-end]
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return EXIT_SUCCESS;
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}
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