opencv/modules/gpu/test/test_main.cpp

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#include "test_precomp.hpp"

#ifdef HAVE_CUDA
#include <cuda_runtime_api.h>

void print_info()
{    
    printf("\n");
#if defined _WIN32
#   if defined _WIN64
        puts("OS: Windows 64");
#   else
        puts("OS: Windows 32");
#   endif
#elif defined linux
#   if defined _LP64
        puts("OS: Linux 64");
#   else
        puts("OS: Linux 32");
#   endif
#elif defined __APPLE__
#   if defined _LP64
        puts("OS: Apple 64");
#   else
        puts("OS: Apple 32");
#   endif
#endif

    int deviceCount = cv::gpu::getCudaEnabledDeviceCount();
    int driver;
    cudaDriverGetVersion(&driver);

    printf("CUDA Driver  version: %d\n", driver);        
    printf("CUDA Runtime version: %d\n", CUDART_VERSION);    
    printf("CUDA device count: %d\n\n", deviceCount);
    

    for (int i = 0; i < deviceCount; ++i)
    {
        cv::gpu::DeviceInfo info(i);
        printf("Device %d:\n", i);
        printf("    Name: %s\n", info.name().c_str());
        printf("    Compute capability version: %d.%d\n", info.majorVersion(), info.minorVersion());
        printf("    Total memory: %d Mb\n", static_cast<int>(static_cast<int>(info.totalMemory() / 1024.0) / 1024.0));
        printf("    Free  memory: %d Mb\n", static_cast<int>(static_cast<int>(info.freeMemory() / 1024.0) / 1024.0));
        if (info.isCompatible())
            puts("    This device is compatible with current GPU module build\n");
        else
            puts("    This device is NOT compatible with current GPU module build\n");
    }
    
    puts("GPU module was compiled for the following GPU archs:");
    printf("    BIN: %s\n", CUDA_ARCH_BIN);
    printf("    PTX: %s\n\n", CUDA_ARCH_PTX);
}

enum OutputLevel
{
    OutputLevelNone,
    OutputLevelCompact,
    OutputLevelFull
};

extern OutputLevel nvidiaTestOutputLevel;

int main(int argc, char** argv)
{
    cvtest::TS::ptr()->init("gpu");
    testing::InitGoogleTest(&argc, argv);

    const char* keys ="{ nvtest_output_level | nvtest_output_level | none | NVidia test verbosity level }";

    cv::CommandLineParser parser(argc, (const char**)argv, keys);

    std::string outputLevel = parser.get<std::string>("nvtest_output_level", "none");

    if (outputLevel == "none")
        nvidiaTestOutputLevel = OutputLevelNone;
    else if (outputLevel == "compact")
        nvidiaTestOutputLevel = OutputLevelCompact;
    else if (outputLevel == "full")
        nvidiaTestOutputLevel = OutputLevelFull;

    print_info();
    return RUN_ALL_TESTS();
}

#else // HAVE_CUDA

int main(int argc, char** argv)
{
    printf("OpenCV was built without CUDA support\n");
    return 0;
}

#endif // HAVE_CUDA