Params.h

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#ifndef PARAMS_H_
#define PARAMS_H_
 
#define DEFAULT_NUM_THREADS 4
 
struct paramStruct
{
    int nWidth;         //Output image width
    int nHeight;        //Output image height
    int nInWidth;       //Input  image width
    int nInHeight;      //Input  image height
    int nFilterWidth;   //Filter size is nFilterWidth X nFilterWidth
    int nIterations;    //Run timing loop for nIterations
 
    enum {WORK_DIM=2};
    size_t globalNDWorkSize[WORK_DIM];  //Total number of work items
    size_t localNDWorkSize[WORK_DIM];   //Work items in each work-group
 
    std::string kernelFile; //File that contains all the kernels
    //Vector to store all kernels
    std::vector<std::string> kernelNames;
    int nTotalKernels;  //kernelNames.size()
 
    //Test CPU performance with 1,4,8 etc. OpenMP threads
    std::vector<int> ompThreads;
    int nOmpRuns;       //ompThreads.size()
 
    bool bCPUTiming;            //Time CPU performance
    bool bDeviceKernelTiming;   //Time OpenCL performance
 
    bool bVerify;       //Crosscheck the OpenCL results with the CPU results
} params;
 
void Usage(char *name);
void ParseCommandLine(int argc, char* argv[]);
 
void InitParams(int argc, char* argv[])
{
    params.nWidth = 1024*8;
    params.nHeight = 1024*8;
    params.nFilterWidth = 50;
    params.nIterations = 3;
 
    params.bCPUTiming = true;
    params.bDeviceKernelTiming = true;
    params.bVerify = true;
 
    params.kernelFile = "convol.cl";
    ParseCommandLine(argc, argv);
 
    params.nInWidth = params.nWidth + (params.nFilterWidth-1);
    params.nInHeight = params.nHeight + (params.nFilterWidth-1);
 
    params.globalNDWorkSize[0] = params.nWidth;
    params.globalNDWorkSize[1] = params.nHeight;
    params.localNDWorkSize[0]  = 32;
    params.localNDWorkSize[1]  = 32;
 
    params.kernelNames.push_back("Convolve");
    params.nTotalKernels = params.kernelNames.size();
 
    params.ompThreads.push_back(4);
    //params.ompThreads.push_back(1);
    //params.ompThreads.push_back(8);
    params.nOmpRuns = params.ompThreads.size();
 
    if (!params.bDeviceKernelTiming)
        params.bVerify = false;
}
 
void ParseCommandLine(int argc, char* argv[])
{
    for (int i = 1; i < argc; ++i)
    {
        switch (argv[i][1])
        {
        case 'c':
            params.bCPUTiming = false;
            break;
        case 'k':
            params.bDeviceKernelTiming = false;
            break;
        case 'e':
            params.bVerify = false;
            break;
        case 'f':
            if (++i < argc)
            {
                sscanf(argv[i], "%u", &params.nFilterWidth);
            }
            else
            {
                std::cerr << "Could not read argument after option " << argv[i-1] << std::endl;
                Usage(argv[0]);
                throw;
            }
            break;
        case 'i':
            if (++i < argc)
            {
                sscanf(argv[i], "%u", &params.nIterations);
            }
            else
            {
                std::cerr << "Could not read argument after option " << argv[i-1] << std::endl;
                Usage(argv[0]);
                throw;
            }
            break;
        case 'x':
            if (++i < argc)
            {
                sscanf(argv[i], "%u", &params.nWidth);
            }
            else
            {
                std::cerr << "Could not read argument after option " << argv[i-1] << std::endl;
                Usage(argv[0]);
                throw;
            }
            break;
        case 'y':
            if (++i < argc)
            {
                sscanf(argv[i], "%u", &params.nHeight);
            }
            else
            {
                std::cerr << "Could not read argument after option " << argv[i-1] << std::endl;
                Usage(argv[0]);
                throw;
            }
            break;
        case 'o':
            if (++i < argc)
            {
                params.kernelFile = argv[i];
            }
            else
            {
                std::cerr << "Could not read argument after option " << argv[i-1] << std::endl;
                Usage(argv[0]);
                throw;
            }
            break;
        case 'h':
            Usage(argv[0]);
            exit(1);
        default:
            std::cerr << "Invalid argument " << argv[i] << std::endl;
            Usage(argv[0]);
            throw(std::string("Invalid argument"));
        }
    }
}
 
void Usage(char *name)
{
    printf("\tUsage: %s [-h] [-c] [-k] [-e] [-f <int>] [-i <int>] [-x <int>] [-y <int>] [-o kernel]\n", name);
    printf("   -h          Print this help menu.\n");
    printf("   -c          Supress CPU timing run.\n");
    printf("   -k          Supress Device (kernel only) timing run.\n");
    printf("   -e          Supress output verification.\n");
    printf("   -f <int>    Sets the filter width.\n");
    printf("   -i <int>    Number of iterations.\n");
    printf("   -x <int>    Sets the image width.\n");
    printf("   -y <int>    Sets the image height.\n");
    printf("   -o <kernel> Sets the OpenCL kernel to use.\n");
}
 
 
#endif    //#ifndef PARAMS_H_