Function main

src/samples/example_sspmv.c:73–173

}

int
main(void)
{
    cl_int err;
    cl_platform_id platform = 0;
    cl_device_id device = 0;
    cl_context_properties props[3] = { CL_CONTEXT_PLATFORM, 0, 0 };
    cl_context ctx = 0;
    cl_command_queue queue = 0;
    cl_mem bufAP, bufX, bufY;
    cl_event event = NULL;
    int ret = 0, numElementsAP;

    /* Setup OpenCL environment. */
    err = clGetPlatformIDs(1, &platform, NULL);
    if (err != CL_SUCCESS) {
        printf( "clGetPlatformIDs() failed with %d\n", err );
        return 1;
    }

    err = clGetDeviceIDs(platform, CL_DEVICE_TYPE_GPU, 1, &device, NULL);
    if (err != CL_SUCCESS) {
        printf( "clGetDeviceIDs() failed with %d\n", err );
        return 1;
    }

    props[1] = (cl_context_properties)platform;
    ctx = clCreateContext(props, 1, &device, NULL, NULL, &err);
    if (err != CL_SUCCESS) {
        printf( "clCreateContext() failed with %d\n", err );
        return 1;
    }

    queue = clCreateCommandQueue(ctx, device, 0, &err);
    if (err != CL_SUCCESS) {
        printf( "clCreateCommandQueue() failed with %d\n", err );
        clReleaseContext(ctx);
        return 1;
    }

    /* Setup clblas. */
    err = clblasSetup();
    if (err != CL_SUCCESS) {
        printf("clblasSetup() failed with %d\n", err);
        clReleaseCommandQueue(queue);
        clReleaseContext(ctx);
        return 1;
    }

    numElementsAP = (N * (N+1)) / 2;	// To get number of elements in a packed matrix

    /* Prepare OpenCL memory objects and place matrices inside them. */
    bufAP = clCreateBuffer(ctx, CL_MEM_READ_ONLY, numElementsAP * sizeof(cl_float),
                          NULL, &err);
    bufX = clCreateBuffer(ctx, CL_MEM_READ_ONLY, N * sizeof(cl_float),
                          NULL, &err);
    bufY = clCreateBuffer(ctx, CL_MEM_READ_WRITE, N * sizeof(cl_float),
                          NULL, &err);