TheRock/rocm-systems/projects/hip/docs/tools/example_codes/device_enumeration.cpp

// Copyright (c) Advanced Micro Devices, Inc., or its affiliates.
//
// SPDX-License-Identifier: MIT

// [sphinx-start]
#include <hip/hip_runtime.h>

#include <cstdlib>
#include <iostream>

#define HIP_CHECK(expression)                        \
{                                                    \
    const hipError_t status = expression;            \
    if (status != hipSuccess)                        \
    {                                                \
        std::cerr << "HIP error " << status          \
                << ": " << hipGetErrorString(status) \
                << " at " << __FILE__ << ":"         \
                << __LINE__ << std::endl;            \
        std::exit(EXIT_FAILURE);                     \
    }                                                \
}

int main()
{
    int deviceCount;
    HIP_CHECK(hipGetDeviceCount(&deviceCount));
    std::cout << "Number of devices: " << deviceCount << std::endl;

    for (int deviceId = 0; deviceId < deviceCount; ++deviceId)
    {
        hipDeviceProp_t deviceProp;
        HIP_CHECK(hipGetDeviceProperties(&deviceProp, deviceId));
        std::cout << "Device " << deviceId << std::endl << " Properties:" << std::endl;
        std::cout << "  Name: " << deviceProp.name << std::endl;
        std::cout << "  Total Global Memory: " << deviceProp.totalGlobalMem / (1024 * 1024) << " MiB" << std::endl;
        std::cout << "  Shared Memory per Block: " << deviceProp.sharedMemPerBlock / 1024 << " KiB" << std::endl;
        std::cout << "  Registers per Block: " << deviceProp.regsPerBlock << std::endl;
        std::cout << "  Warp Size: " << deviceProp.warpSize << std::endl;
        std::cout << "  Max Threads per Block: " << deviceProp.maxThreadsPerBlock << std::endl;
        std::cout << "  Max Threads per Multiprocessor: " << deviceProp.maxThreadsPerMultiProcessor << std::endl;
        std::cout << "  Number of Multiprocessors: " << deviceProp.multiProcessorCount << std::endl;
        std::cout << "  Max Threads Dimensions: ["
                << deviceProp.maxThreadsDim[0] << ", "
                << deviceProp.maxThreadsDim[1] << ", "
                << deviceProp.maxThreadsDim[2] << "]" << std::endl;
        std::cout << "  Max Grid Size: ["
                << deviceProp.maxGridSize[0] << ", "
                << deviceProp.maxGridSize[1] << ", "
                << deviceProp.maxGridSize[2] << "]" << std::endl;
        std::cout << std::endl;
    }

    return EXIT_SUCCESS;
}
// [sphinx-end]