Function main

samples/sample-spmv.cpp:74–316

 */

int main (int argc, char* argv[])
{
    //parse command line
    std::string matrix_path;

    if (argc < 2)
    {
        std::cout << "Not enough parameters. "
                  << "Please specify path to matrix in mtx format as parameter"
                  << std::endl;
        return -1;
    }
    else
    {
        matrix_path = std::string(argv[1]);
    }

    std::cout << "Executing sample clSPARSE SpMV (y = A*x) C++" << std::endl;

    std::cout << "Matrix will be read from: " << matrix_path << std::endl;

    /**  Step 1. Setup OpenCL environment; **/

    // Init OpenCL environment;
    cl_int cl_status;

    // Get OpenCL platforms
    std::vector<cl::Platform> platforms;

    cl_status = cl::Platform::get(&platforms);

    if (cl_status != CL_SUCCESS)
    {
        std::cout << "Problem with getting OpenCL platforms"
                  << " [" << cl_status << "]" << std::endl;
        return -2;
    }

    int platform_id = 0;
    for (const auto& p : platforms)
    {
        std::cout << "Platform ID " << platform_id++ << " : "
                  << p.getInfo<CL_PLATFORM_NAME>() << std::endl;

    }

    // Using first platform
    platform_id = 0;
    cl::Platform platform = platforms[platform_id];

    // Get device from platform
    std::vector<cl::Device> devices;
    cl_status = platform.getDevices(CL_DEVICE_TYPE_GPU, &devices);

    if (cl_status != CL_SUCCESS)
    {
        std::cout << "Problem with getting devices from platform"
                  << " [" << platform_id << "] " << platform.getInfo<CL_PLATFORM_NAME>()