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
80 строки
2.6 KiB
Plaintext
80 строки
2.6 KiB
Plaintext
// 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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// [sphinx-start]
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#include <hip/hip_runtime.h>
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#include <iostream>
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#define HIP_CHECK(expression) \
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{ \
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const hipError_t err = expression; \
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if(err != hipSuccess) \
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{ \
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std::cerr << "HIP error: " \
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<< hipGetErrorString(err) \
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<< " at " << __LINE__ << "\n"; \
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} \
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}
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// Addition of two values.
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__global__ void add(int *a, int *b, int *c)
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{
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*c = *a + *b;
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}
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int main()
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{
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int a, b, c;
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int *d_a, *d_b, *d_c;
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// Setup input values.
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a = 1;
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b = 2;
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// Allocate device copies of a, b and c.
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HIP_CHECK(hipMalloc(&d_a, sizeof(*d_a)));
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HIP_CHECK(hipMalloc(&d_b, sizeof(*d_b)));
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HIP_CHECK(hipMalloc(&d_c, sizeof(*d_c)));
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// Copy input values to device.
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HIP_CHECK(hipMemcpy(d_a, &a, sizeof(*d_a), hipMemcpyHostToDevice));
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HIP_CHECK(hipMemcpy(d_b, &b, sizeof(*d_b), hipMemcpyHostToDevice));
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// Launch add() kernel on GPU.
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add<<<1, 1>>>(d_a, d_b, d_c);
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// Copy the result back to the host.
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HIP_CHECK(hipMemcpy(&c, d_c, sizeof(*d_c), hipMemcpyDeviceToHost));
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// Cleanup allocated memory.
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HIP_CHECK(hipFree(d_a));
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HIP_CHECK(hipFree(d_b));
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HIP_CHECK(hipFree(d_c));
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// Prints the result.
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std::cout << a << " + " << b << " = " << c << std::endl;
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return 0;
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}
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// [sphinx-end]
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