Golang cl.CLCreateContext函数代码示例

func TestContext(t *testing.T) {
	/* Host/device data structures */
	var platform [1]cl.CL_platform_id
	var device [1]cl.CL_device_id
	var context cl.CL_context
	var err cl.CL_int

	var paramValueSize cl.CL_size_t
	var ref_count interface{}
	user_data := []byte("Hello, I am callback")

	/* Access the first installed platform */
	err = cl.CLGetPlatformIDs(1, platform[:], nil)
	if err != cl.CL_SUCCESS {
		t.Errorf("Couldn't find any platforms")
	}

	/* Access the first available device */
	err = cl.CLGetDeviceIDs(platform[0], cl.CL_DEVICE_TYPE_GPU, 1, device[:], nil)
	if err == cl.CL_DEVICE_NOT_FOUND {
		err = cl.CLGetDeviceIDs(platform[0], cl.CL_DEVICE_TYPE_CPU, 1, device[:], nil)
	}
	if err != cl.CL_SUCCESS {
		t.Errorf("Couldn't find any devices")
	}

	/* Create the context */
	context = cl.CLCreateContext(nil, 1, device[:], my_contex_notify, unsafe.Pointer(&user_data), &err)
	if err != cl.CL_SUCCESS {
		t.Errorf("Couldn't create a context")
	}

	/* Determine the reference count */
	err = cl.CLGetContextInfo(context, cl.CL_CONTEXT_REFERENCE_COUNT,
		0, nil, &paramValueSize)

	if err != cl.CL_SUCCESS {
		t.Errorf("Failed to find context %s.\n", "CL_CONTEXT_REFERENCE_COUNT")
	}

	err = cl.CLGetContextInfo(context, cl.CL_CONTEXT_REFERENCE_COUNT,
		paramValueSize, &ref_count, nil)
	if err != cl.CL_SUCCESS {
		t.Errorf("Couldn't read the reference count.")
	}
	t.Logf("Initial reference count: %d\n", ref_count.(cl.CL_uint))

	/* Update and display the reference count */
	cl.CLRetainContext(context)
	cl.CLGetContextInfo(context, cl.CL_CONTEXT_REFERENCE_COUNT,
		paramValueSize, &ref_count, nil)
	t.Logf("Reference count: %d\n", ref_count.(cl.CL_uint))

	cl.CLReleaseContext(context)
	cl.CLGetContextInfo(context, cl.CL_CONTEXT_REFERENCE_COUNT,
		paramValueSize, &ref_count, nil)
	t.Logf("Reference count: %d\n", ref_count.(cl.CL_uint))

	cl.CLReleaseContext(context)
}

func CreateContext(properties []cl.CL_context_properties,
	devices []Device,
	pfn_notify cl.CL_ctx_notify,
	user_data unsafe.Pointer) (Context, error) {
	var numDevices cl.CL_uint
	var deviceIds []cl.CL_device_id
	var errCode cl.CL_int

	numDevices = cl.CL_uint(len(devices))
	deviceIds = make([]cl.CL_device_id, numDevices)
	for i := cl.CL_uint(0); i < numDevices; i++ {
		deviceIds[i] = devices[i].GetID()
	}

	/* Create the context */
	if context_id := cl.CLCreateContext(properties, numDevices, deviceIds, pfn_notify, user_data, &errCode); errCode != cl.CL_SUCCESS {
		return nil, fmt.Errorf("CreateContext failure with errcode_ret %d: %s", errCode, cl.ERROR_CODES_STRINGS[-errCode])
	} else {
		return &context{context_id}, nil
	}
}

func TestMatvec(t *testing.T) {
	/* Host/device data structures */
	var platform [1]cl.CL_platform_id
	var device [1]cl.CL_device_id
	var context cl.CL_context
	var queue cl.CL_command_queue
	var i, err cl.CL_int

	/* Program/kernel data structures */
	var program cl.CL_program
	var program_buffer [1][]byte
	var program_log interface{}
	var program_size [1]cl.CL_size_t
	var log_size cl.CL_size_t
	var kernel cl.CL_kernel

	/* Data and buffers */
	var mat [16]float32
	var vec, result [4]float32
	var correct = [4]float32{0.0, 0.0, 0.0, 0.0}
	var mat_buff, vec_buff, res_buff cl.CL_mem

	/* Initialize data to be processed by the kernel */
	for i = 0; i < 16; i++ {
		mat[i] = float32(i) * 2.0
	}

	for i = 0; i < 4; i++ {
		vec[i] = float32(i) * 3.0
		correct[0] += mat[i] * vec[i]
		correct[1] += mat[i+4] * vec[i]
		correct[2] += mat[i+8] * vec[i]
		correct[3] += mat[i+12] * vec[i]
	}

	/* Identify a platform */
	err = cl.CLGetPlatformIDs(1, platform[:], nil)
	if err < 0 {
		t.Errorf("Couldn't find any platforms")
	}

	/* Access a device */
	err = cl.CLGetDeviceIDs(platform[0], cl.CL_DEVICE_TYPE_GPU, 1, device[:], nil)
	if err < 0 {
		err = cl.CLGetDeviceIDs(platform[0], cl.CL_DEVICE_TYPE_CPU, 1, device[:], nil)
		if err < 0 {
			t.Errorf("Couldn't find any devices")
		}
	}

	/* Create the context */
	context = cl.CLCreateContext(nil, 1, device[:], nil, nil, &err)
	if err < 0 {
		t.Errorf("Couldn't create a context")
	}

	/* Read program file and place content into buffer */
	program_handle, err1 := os.Open("matvec.cl")
	if err1 != nil {
		t.Errorf("Couldn't find the program file")
	}
	defer program_handle.Close()

	fi, err2 := program_handle.Stat()
	if err2 != nil {
		t.Errorf("Couldn't find the program stat")
	}
	program_size[0] = cl.CL_size_t(fi.Size())
	program_buffer[0] = make([]byte, program_size[0])
	read_size, err3 := program_handle.Read(program_buffer[0])
	if err3 != nil || cl.CL_size_t(read_size) != program_size[0] {
		t.Errorf("read file error or file size wrong")
	}

	/* Create a program containing all program content */
	program = cl.CLCreateProgramWithSource(context, 1,
		program_buffer[:], program_size[:], &err)
	if err < 0 {
		t.Errorf("Couldn't create the program")
	}

	/* Build program */
	err = cl.CLBuildProgram(program, 1, device[:], nil, nil, nil)
	if err < 0 {
		/* Find size of log and print to std output */
		cl.CLGetProgramBuildInfo(program, device[0], cl.CL_PROGRAM_BUILD_LOG,
			0, nil, &log_size)
		//program_log = (char*) malloc(log_size+1);
		//program_log[log_size] = '\0';
		cl.CLGetProgramBuildInfo(program, device[0], cl.CL_PROGRAM_BUILD_LOG,
			log_size, &program_log, nil)
		t.Errorf("%s\n", program_log)
		//free(program_log);
	}

	/* Create kernel for the mat_vec_mult function */
	kernel = cl.CLCreateKernel(program, []byte("matvec_mult"), &err)
	if err < 0 {
		t.Errorf("Couldn't create the kernel")
		return
//.........这里部分代码省略.........

func main() {
	// This code executes on the OpenCL host

	// Host data
	var size cl.CL_int
	var A []cl.CL_int //input array
	var B []cl.CL_int //input array
	var C []cl.CL_int //output array

	// Elements in each array
	const elements = cl.CL_size_t(2048)

	// Compute the size of the data
	datasize := cl.CL_size_t(unsafe.Sizeof(size)) * elements

	// Allocate space for input/output data
	A = make([]cl.CL_int, datasize)
	B = make([]cl.CL_int, datasize)
	C = make([]cl.CL_int, datasize)
	// Initialize the input data
	for i := cl.CL_int(0); i < cl.CL_int(elements); i++ {
		A[i] = i
		B[i] = i
	}

	// Use this to check the output of each API call
	var status cl.CL_int

	//-----------------------------------------------------
	// STEP 1: Discover and initialize the platforms
	//-----------------------------------------------------

	var numPlatforms cl.CL_uint
	var platforms []cl.CL_platform_id

	// Use clGetPlatformIDs() to retrieve the number of
	// platforms
	status = cl.CLGetPlatformIDs(0, nil, &numPlatforms)

	// Allocate enough space for each platform
	platforms = make([]cl.CL_platform_id, numPlatforms)

	// Fill in platforms with clGetPlatformIDs()
	status = cl.CLGetPlatformIDs(numPlatforms, platforms, nil)
	if status != cl.CL_SUCCESS {
		println("CLGetPlatformIDs status!=cl.CL_SUCCESS")
		return
	}
	//-----------------------------------------------------
	// STEP 2: Discover and initialize the devices
	//-----------------------------------------------------

	var numDevices cl.CL_uint
	var devices []cl.CL_device_id

	// Use clGetDeviceIDs() to retrieve the number of
	// devices present
	status = cl.CLGetDeviceIDs(platforms[0],
		cl.CL_DEVICE_TYPE_ALL,
		0,
		nil,
		&numDevices)
	if status != cl.CL_SUCCESS {
		println("CLGetDeviceIDs status!=cl.CL_SUCCESS")
		return
	}

	// Allocate enough space for each device
	devices = make([]cl.CL_device_id, numDevices)

	// Fill in devices with clGetDeviceIDs()
	status = cl.CLGetDeviceIDs(platforms[0],
		cl.CL_DEVICE_TYPE_ALL,
		numDevices,
		devices,
		nil)
	if status != cl.CL_SUCCESS {
		println("CLGetDeviceIDs status!=cl.CL_SUCCESS")
		return
	}
	//-----------------------------------------------------
	// STEP 3: Create a context
	//-----------------------------------------------------

	var context cl.CL_context

	// Create a context using clCreateContext() and
	// associate it with the devices
	context = cl.CLCreateContext(nil,
		numDevices,
		devices,
		nil,
		nil,
		&status)
	if status != cl.CL_SUCCESS {
		println("CLCreateContext status!=cl.CL_SUCCESS")
		return
	}
	//-----------------------------------------------------
	// STEP 4: Create a command queue
//.........这里部分代码省略.........

func main() {
	var i, j cl.CL_size_t
	// Rows and columns in the input image
	inputFile := "test.png"
	outputFile := "output.png"
	refFile := "ref.png"

	// Homegrown function to read a BMP from file
	inputpixels, imageWidth, imageHeight, err1 := utils.Read_image_data(inputFile)
	if err1 != nil {
		log.Fatal(err1)
		return
	} else {
		fmt.Printf("width=%d, height=%d (%d)\n", imageWidth, imageHeight, inputpixels[0])
	}

	// Output image on the host
	outputpixels := make([]uint16, imageHeight*imageWidth)
	inputImage := make([]float32, imageHeight*imageWidth)
	outputImage := make([]float32, imageHeight*imageWidth)
	refImage := make([]float32, imageHeight*imageWidth)

	for i = 0; i < imageHeight*imageWidth; i++ {
		inputImage[i] = float32(inputpixels[i])
	}

	// 45 degree motion blur
	var filter = [49]float32{0, 0, 0, 0, 0, 0, 0,
		0, 0, 0, 0, 0, 0, 0,
		0, 0, -1, 0, 1, 0, 0,
		0, 0, -2, 0, 2, 0, 0,
		0, 0, -1, 0, 1, 0, 0,
		0, 0, 0, 0, 0, 0, 0,
		0, 0, 0, 0, 0, 0, 0}

	// The convolution filter is 7x7
	filterWidth := cl.CL_size_t(7)
	filterSize := cl.CL_size_t(filterWidth * filterWidth) // Assume a square kernel

	// Set up the OpenCL environment
	var status cl.CL_int

	// Discovery platform
	var platform [1]cl.CL_platform_id
	status = cl.CLGetPlatformIDs(1, platform[:], nil)
	chk(status, "clGetPlatformIDs")

	// Discover device
	var device [1]cl.CL_device_id
	cl.CLGetDeviceIDs(platform[0], cl.CL_DEVICE_TYPE_ALL, 1, device[:], nil)
	chk(status, "clGetDeviceIDs")

	// Create context
	//var props =[3]cl.CL_context_properties{cl.CL_CONTEXT_PLATFORM,
	//    (cl.CL_context_properties)(unsafe.Pointer(&platform[0])), 0};

	var context cl.CL_context
	context = cl.CLCreateContext(nil, 1, device[:], nil, nil, &status)
	chk(status, "clCreateContext")

	// Create command queue
	var queue cl.CL_command_queue
	queue = cl.CLCreateCommandQueue(context, device[0], 0, &status)
	chk(status, "clCreateCommandQueue")

	// The image format describes how the data will be stored in memory
	var format cl.CL_image_format
	format.Image_channel_order = cl.CL_R         // single channel
	format.Image_channel_data_type = cl.CL_FLOAT // float data type

	var desc cl.CL_image_desc
	desc.Image_type = cl.CL_MEM_OBJECT_IMAGE2D
	desc.Image_width = imageWidth
	desc.Image_height = imageHeight
	desc.Image_depth = 0
	desc.Image_array_size = 0
	desc.Image_row_pitch = 0
	desc.Image_slice_pitch = 0
	desc.Num_mip_levels = 0
	desc.Num_samples = 0
	desc.Buffer = cl.CL_mem{}

	// Create space for the source image on the device
	d_inputImage := cl.CLCreateImage(context, cl.CL_MEM_READ_ONLY, &format, &desc,
		nil, &status)
	chk(status, "clCreateImage")

	// Create space for the output image on the device
	d_outputImage := cl.CLCreateImage(context, cl.CL_MEM_WRITE_ONLY, &format, &desc,
		nil, &status)
	chk(status, "clCreateImage")

	// Create space for the 7x7 filter on the device
	d_filter := cl.CLCreateBuffer(context, 0, filterSize*cl.CL_size_t(unsafe.Sizeof(filter[0])),
		nil, &status)
	chk(status, "clCreateBuffer")

	// Copy the source image to the device
	var origin = [3]cl.CL_size_t{0, 0, 0}                                                // Offset within the image to copy from
	var region = [3]cl.CL_size_t{cl.CL_size_t(imageWidth), cl.CL_size_t(imageHeight), 1} // Elements to per dimension
//.........这里部分代码省略.........

func main() {

	/* OpenCL data structures */
	var device []cl.CL_device_id
	var context cl.CL_context
	var queue cl.CL_command_queue
	var program *cl.CL_program
	var kernel cl.CL_kernel
	var err cl.CL_int

	var err1 error
	var global_size [2]cl.CL_size_t

	/* Image data */
	var pixels []uint16
	var png_format cl.CL_image_format
	var input_image, output_image cl.CL_mem
	var origin, region [3]cl.CL_size_t
	var width, height cl.CL_size_t

	/* Open input file and read image data */
	pixels, width, height, err1 = utils.Read_image_data(INPUT_FILE)
	if err1 != nil {
		return
	} else {
		fmt.Printf("width=%d, height=%d", width, height)
	}

	/* Create a device and context */
	device = utils.Create_device()
	context = cl.CLCreateContext(nil, 1, device[:], nil, nil, &err)
	if err < 0 {
		println("Couldn't create a context")
		return
	}

	/* Build the program and create a kernel */
	program = utils.Build_program(context, device[:], PROGRAM_FILE, nil)
	kernel = cl.CLCreateKernel(*program, KERNEL_FUNC, &err)
	if err < 0 {
		fmt.Printf("Couldn't create a kernel: %d", err)
		return
	}

	/* Create image object */
	png_format.Image_channel_order = cl.CL_LUMINANCE
	png_format.Image_channel_data_type = cl.CL_UNORM_INT16
	input_image = cl.CLCreateImage2D(context,
		cl.CL_MEM_READ_ONLY|cl.CL_MEM_COPY_HOST_PTR,
		&png_format, width, height, 0, unsafe.Pointer(&pixels[0]), &err)
	output_image = cl.CLCreateImage2D(context,
		cl.CL_MEM_WRITE_ONLY, &png_format, width, height, 0, nil, &err)
	if err < 0 {
		println("Couldn't create the image object")
		return
	}

	/* Create kernel arguments */
	err = cl.CLSetKernelArg(kernel, 0, cl.CL_size_t(unsafe.Sizeof(input_image)), unsafe.Pointer(&input_image))
	err |= cl.CLSetKernelArg(kernel, 1, cl.CL_size_t(unsafe.Sizeof(output_image)), unsafe.Pointer(&output_image))
	if err < 0 {
		println("Couldn't set a kernel argument")
		return
	}

	/* Create a command queue */
	queue = cl.CLCreateCommandQueue(context, device[0], 0, &err)
	if err < 0 {
		println("Couldn't create a command queue")
		return
	}

	/* Enqueue kernel */
	global_size[0] = width
	global_size[1] = height
	err = cl.CLEnqueueNDRangeKernel(queue, kernel, 2, nil, global_size[:],
		nil, 0, nil, nil)
	if err < 0 {
		println("Couldn't enqueue the kernel")
		return
	}

	/* Read the image object */
	origin[0] = 0
	origin[1] = 0
	origin[2] = 0
	region[0] = width
	region[1] = height
	region[2] = 1
	err = cl.CLEnqueueReadImage(queue, output_image, cl.CL_TRUE, origin,
		region, 0, 0, unsafe.Pointer(&pixels[0]), 0, nil, nil)
	if err < 0 {
		println("Couldn't read from the image object")
		return
	}

	/* Create output PNG file and write data */
	utils.Write_image_data(OUTPUT_FILE, pixels, width, height)

	/* Deallocate resources */
//.........这里部分代码省略.........

func main() {

	/* OpenCL data structures */
	var device []cl.CL_device_id
	var context cl.CL_context
	var queue cl.CL_command_queue
	var program *cl.CL_program
	var kernel cl.CL_kernel
	var err cl.CL_int

	/* Data and buffers */
	var select1 [4]float32
	var select2 [2]cl.CL_uchar
	var select1_buffer, select2_buffer cl.CL_mem

	/* Create a context */
	device = utils.Create_device()
	context = cl.CLCreateContext(nil, 1, device[:], nil, nil, &err)
	if err < 0 {
		println("Couldn't create a context")
		return
	}

	/* Create a kernel */
	program = utils.Build_program(context, device[:], PROGRAM_FILE, nil)
	kernel = cl.CLCreateKernel(*program, KERNEL_FUNC, &err)
	if err < 0 {
		println("Couldn't create a kernel")
		return
	}

	/* Create a write-only buffer to hold the output data */
	select1_buffer = cl.CLCreateBuffer(context, cl.CL_MEM_WRITE_ONLY,
		cl.CL_size_t(unsafe.Sizeof(select1)), nil, &err)
	if err < 0 {
		println("Couldn't create a buffer")
		return
	}
	select2_buffer = cl.CLCreateBuffer(context, cl.CL_MEM_WRITE_ONLY,
		cl.CL_size_t(unsafe.Sizeof(select2)), nil, &err)

	/* Create kernel argument */
	err = cl.CLSetKernelArg(kernel, 0, cl.CL_size_t(unsafe.Sizeof(select1_buffer)), unsafe.Pointer(&select1_buffer))
	if err < 0 {
		println("Couldn't set a kernel argument")
		return
	}
	cl.CLSetKernelArg(kernel, 1, cl.CL_size_t(unsafe.Sizeof(select2_buffer)), unsafe.Pointer(&select2_buffer))

	/* Create a command queue */
	queue = cl.CLCreateCommandQueue(context, device[0], 0, &err)
	if err < 0 {
		println("Couldn't create a command queue")
		return
	}

	/* Enqueue kernel */
	err = cl.CLEnqueueTask(queue, kernel, 0, nil, nil)
	if err < 0 {
		println("Couldn't enqueue the kernel")
		return
	}

	/* Read and print the result */
	err = cl.CLEnqueueReadBuffer(queue, select1_buffer, cl.CL_TRUE, 0,
		cl.CL_size_t(unsafe.Sizeof(select1)), unsafe.Pointer(&select1), 0, nil, nil)
	if err < 0 {
		println("Couldn't read the buffer")
		return
	}
	cl.CLEnqueueReadBuffer(queue, select2_buffer, cl.CL_TRUE, 0,
		cl.CL_size_t(unsafe.Sizeof(select2)), unsafe.Pointer(&select2), 0, nil, nil)

	fmt.Printf("select: ")
	for i := 0; i < 3; i++ {
		fmt.Printf("%.2f, ", select1[i])
	}
	fmt.Printf("%.2f\n", select1[3])

	fmt.Printf("bitselect: %X, %X\n", select2[0], select2[1])

	/* Deallocate resources */
	cl.CLReleaseMemObject(select1_buffer)
	cl.CLReleaseMemObject(select2_buffer)
	cl.CLReleaseKernel(kernel)
	cl.CLReleaseCommandQueue(queue)
	cl.CLReleaseProgram(*program)
	cl.CLReleaseContext(context)
}

func main() {

	/* OpenCL data structures */
	var device []cl.CL_device_id
	var context cl.CL_context
	var queue cl.CL_command_queue
	var program *cl.CL_program
	var kernel cl.CL_kernel
	var err cl.CL_int

	/* Data and buffers */
	var full_matrix, zero_matrix [80]float32
	var sizeoffloat32 = cl.CL_size_t(unsafe.Sizeof(full_matrix[0]))
	var buffer_origin = [3]cl.CL_size_t{5 * sizeoffloat32, 3, 0}
	var host_origin = [3]cl.CL_size_t{1 * sizeoffloat32, 1, 0}
	var region = [3]cl.CL_size_t{4 * sizeoffloat32, 4, 1}
	var matrix_buffer cl.CL_mem

	/* Initialize data */
	for i := 0; i < 80; i++ {
		full_matrix[i] = float32(i) * 1.0
		zero_matrix[i] = 0.0
	}

	/* Create a device and context */
	device = utils.Create_device()
	context = cl.CLCreateContext(nil, 1, device[:], nil, nil, &err)
	if err < 0 {
		println("Couldn't create a context")
		return
	}

	/* Build the program and create the kernel */
	program = utils.Build_program(context, device[:], PROGRAM_FILE, nil)
	if program == nil {
		println("Couldn't build program")
		return
	}

	kernel = cl.CLCreateKernel(*program, []byte(KERNEL_FUNC), &err)
	if err < 0 {
		println("Couldn't create a kernel")
		return
	}

	/* Create a buffer to hold 80 floats */
	matrix_buffer = cl.CLCreateBuffer(context, cl.CL_MEM_READ_WRITE|
		cl.CL_MEM_COPY_HOST_PTR, cl.CL_size_t(unsafe.Sizeof(full_matrix)), unsafe.Pointer(&full_matrix[0]), &err)
	if err < 0 {
		println("Couldn't create a buffer object")
		return
	}

	/* Set buffer as argument to the kernel */
	err = cl.CLSetKernelArg(kernel, 0, cl.CL_size_t(unsafe.Sizeof(matrix_buffer)), unsafe.Pointer(&matrix_buffer))
	if err < 0 {
		println("Couldn't set the buffer as the kernel argument")
		return
	}

	/* Create a command queue */
	queue = cl.CLCreateCommandQueue(context, device[0], 0, &err)
	if err < 0 {
		println("Couldn't create a command queue")
		return
	}

	/* Enqueue kernel */
	err = cl.CLEnqueueTask(queue, kernel, 0, nil, nil)
	if err < 0 {
		println("Couldn't enqueue the kernel")
		return
	}

	/* Enqueue command to write to buffer */
	err = cl.CLEnqueueWriteBuffer(queue, matrix_buffer, cl.CL_TRUE, 0,
		cl.CL_size_t(unsafe.Sizeof(full_matrix)), unsafe.Pointer(&full_matrix[0]), 0, nil, nil)
	if err < 0 {
		println("Couldn't write to the buffer object")
		return
	}

	/* Enqueue command to read rectangle of data */
	err = cl.CLEnqueueReadBufferRect(queue, matrix_buffer, cl.CL_TRUE,
		buffer_origin, host_origin, region, 10*sizeoffloat32, 0,
		10*sizeoffloat32, 0, unsafe.Pointer(&zero_matrix[0]), 0, nil, nil)
	if err < 0 {
		println("Couldn't read the rectangle from the buffer object")
		return
	}

	/* Display updated buffer */
	for i := 0; i < 8; i++ {
		for j := 0; j < 10; j++ {
			fmt.Printf("%6.1f", zero_matrix[j+i*10])
		}
		fmt.Printf("\n")
	}

	/* Deallocate resources */
//.........这里部分代码省略.........

func main() {

	/* OpenCL data structures */
	var device []cl.CL_device_id
	var context cl.CL_context
	var queue cl.CL_command_queue
	var program *cl.CL_program
	var kernel cl.CL_kernel
	var err cl.CL_int

	/* Data and buffers */
	var r_coords = [4]float32{2, 1, 3, 4}
	var angles = [4]float32{3 * M_PI / 8, 3 * M_PI / 4, 4 * M_PI / 3, 11 * M_PI / 6}
	var x_coords, y_coords [4]float32
	var r_coords_buffer, angles_buffer,
		x_coords_buffer, y_coords_buffer cl.CL_mem

	/* Create a device and context */
	device = utils.Create_device()
	context = cl.CLCreateContext(nil, 1, device[:], nil, nil, &err)
	if err < 0 {
		println("Couldn't create a context")
		return
	}

	/* Create a kernel */
	program = utils.Build_program(context, device[:], PROGRAM_FILE, nil)
	kernel = cl.CLCreateKernel(*program, KERNEL_FUNC, &err)
	if err < 0 {
		println("Couldn't create a kernel")
		return
	}

	/* Create a write-only buffer to hold the output data */
	r_coords_buffer = cl.CLCreateBuffer(context, cl.CL_MEM_READ_ONLY|cl.CL_MEM_COPY_HOST_PTR,
		cl.CL_size_t(unsafe.Sizeof(r_coords)), unsafe.Pointer(&r_coords[0]), &err)
	if err < 0 {
		println("Couldn't create a buffer")
		return
	}
	angles_buffer = cl.CLCreateBuffer(context, cl.CL_MEM_READ_ONLY|cl.CL_MEM_COPY_HOST_PTR,
		cl.CL_size_t(unsafe.Sizeof(angles)), unsafe.Pointer(&angles[0]), &err)
	x_coords_buffer = cl.CLCreateBuffer(context, cl.CL_MEM_READ_WRITE,
		cl.CL_size_t(unsafe.Sizeof(x_coords)), nil, &err)
	y_coords_buffer = cl.CLCreateBuffer(context, cl.CL_MEM_READ_WRITE,
		cl.CL_size_t(unsafe.Sizeof(y_coords)), nil, &err)

	/* Create kernel argument */
	err = cl.CLSetKernelArg(kernel, 0, cl.CL_size_t(unsafe.Sizeof(r_coords_buffer)), unsafe.Pointer(&r_coords_buffer))
	if err < 0 {
		println("Couldn't set a kernel argument")
		return
	}
	cl.CLSetKernelArg(kernel, 1, cl.CL_size_t(unsafe.Sizeof(angles_buffer)), unsafe.Pointer(&angles_buffer))
	cl.CLSetKernelArg(kernel, 2, cl.CL_size_t(unsafe.Sizeof(x_coords_buffer)), unsafe.Pointer(&x_coords_buffer))
	cl.CLSetKernelArg(kernel, 3, cl.CL_size_t(unsafe.Sizeof(y_coords_buffer)), unsafe.Pointer(&y_coords_buffer))

	/* Create a command queue */
	queue = cl.CLCreateCommandQueue(context, device[0], 0, &err)
	if err < 0 {
		println("Couldn't create a command queue")
		return
	}

	/* Enqueue kernel */
	err = cl.CLEnqueueTask(queue, kernel, 0, nil, nil)
	if err < 0 {
		println("Couldn't enqueue the kernel")
		return
	}

	/* Read and print the result */
	err = cl.CLEnqueueReadBuffer(queue, x_coords_buffer, cl.CL_TRUE, 0,
		cl.CL_size_t(unsafe.Sizeof(x_coords)), unsafe.Pointer(&x_coords), 0, nil, nil)
	if err < 0 {
		println("Couldn't read the buffer")
		return
	}
	cl.CLEnqueueReadBuffer(queue, y_coords_buffer, cl.CL_TRUE, 0,
		cl.CL_size_t(unsafe.Sizeof(y_coords)), unsafe.Pointer(&y_coords), 0, nil, nil)

	/* Display the results */
	for i := 0; i < 4; i++ {
		fmt.Printf("(%6.3f, %6.3f)\n", x_coords[i], y_coords[i])
	}

	/* Deallocate resources */
	cl.CLReleaseMemObject(r_coords_buffer)
	cl.CLReleaseMemObject(angles_buffer)
	cl.CLReleaseMemObject(x_coords_buffer)
	cl.CLReleaseMemObject(y_coords_buffer)
	cl.CLReleaseKernel(kernel)
	cl.CLReleaseCommandQueue(queue)
	cl.CLReleaseProgram(*program)
	cl.CLReleaseContext(context)
}

func main() {

	/* OpenCL data structures */
	var device []cl.CL_device_id
	var context cl.CL_context
	var queue cl.CL_command_queue
	var program *cl.CL_program
	var kernel cl.CL_kernel
	var err cl.CL_int

	var offset, global_size, local_size [1]cl.CL_size_t

	/* Data and events */
	var data [2]cl.CL_int
	var data_buffer cl.CL_mem

	/* Create a device and context */
	device = utils.Create_device()
	context = cl.CLCreateContext(nil, 1, device[:], nil, nil, &err)
	if err < 0 {
		println("Couldn't create a context")
		return
	}

	/* Build the program and create a kernel */
	program = utils.Build_program(context, device[:], PROGRAM_FILE, nil)
	kernel = cl.CLCreateKernel(*program, KERNEL_FUNC, &err)
	if err < 0 {
		println("Couldn't create a kernel")
		return
	}

	/* Create a buffer to hold data */
	data_buffer = cl.CLCreateBuffer(context, cl.CL_MEM_WRITE_ONLY,
		cl.CL_size_t(unsafe.Sizeof(data[0]))*2, nil, &err)
	if err < 0 {
		println("Couldn't create a buffer")
		return
	}

	/* Create kernel argument */
	err = cl.CLSetKernelArg(kernel, 0, cl.CL_size_t(unsafe.Sizeof(data_buffer)), unsafe.Pointer(&data_buffer))
	if err < 0 {
		println("Couldn't set a kernel argument")
		return
	}

	/* Create a command queue */
	queue = cl.CLCreateCommandQueue(context, device[0], 0, &err)
	if err < 0 {
		println("Couldn't create a command queue")
		return
	}

	/* Enqueue kernel */
	offset[0] = 0
	global_size[0] = 8
	local_size[0] = 4
	err = cl.CLEnqueueNDRangeKernel(queue, kernel, 1, offset[:], global_size[:], local_size[:], 0, nil, nil)
	if err < 0 {
		println("Couldn't enqueue the kernel")
		return
	}

	/* Read the buffer */
	err = cl.CLEnqueueReadBuffer(queue, data_buffer, cl.CL_TRUE, 0,
		cl.CL_size_t(unsafe.Sizeof(data[0]))*2, unsafe.Pointer(&data[0]), 0, nil, nil)
	if err < 0 {
		println("Couldn't read the buffer")
		return
	}

	fmt.Printf("Increment: %d\n", data[0])
	fmt.Printf("Atomic increment: %d\n", data[1])

	/* Deallocate resources */
	cl.CLReleaseMemObject(data_buffer)
	cl.CLReleaseKernel(kernel)
	cl.CLReleaseCommandQueue(queue)
	cl.CLReleaseProgram(*program)
	cl.CLReleaseContext(context)
}

func main() {
	// Use this to check the output of each API call
	var status cl.CL_int

	//-----------------------------------------------------
	// STEP 1: Discover and initialize the platforms
	//-----------------------------------------------------
	var numPlatforms cl.CL_uint
	var platforms []cl.CL_platform_id

	// Use clGetPlatformIDs() to retrieve the number of
	// platforms
	status = cl.CLGetPlatformIDs(0, nil, &numPlatforms)

	// Allocate enough space for each platform
	platforms = make([]cl.CL_platform_id, numPlatforms)

	// Fill in platforms with clGetPlatformIDs()
	status = cl.CLGetPlatformIDs(numPlatforms, platforms, nil)
	utils.CHECK_STATUS(status, cl.CL_SUCCESS, "CLGetPlatformIDs")

	//-----------------------------------------------------
	// STEP 2: Discover and initialize the GPU devices
	//-----------------------------------------------------
	var numDevices cl.CL_uint
	var devices []cl.CL_device_id

	// Use clGetDeviceIDs() to retrieve the number of
	// devices present
	status = cl.CLGetDeviceIDs(platforms[0],
		cl.CL_DEVICE_TYPE_GPU,
		0,
		nil,
		&numDevices)
	utils.CHECK_STATUS(status, cl.CL_SUCCESS, "CLGetDeviceIDs")

	// Allocate enough space for each device
	devices = make([]cl.CL_device_id, numDevices)

	// Fill in devices with clGetDeviceIDs()
	status = cl.CLGetDeviceIDs(platforms[0],
		cl.CL_DEVICE_TYPE_GPU,
		numDevices,
		devices,
		nil)
	utils.CHECK_STATUS(status, cl.CL_SUCCESS, "CLGetDeviceIDs")

	//-----------------------------------------------------
	// STEP 3: Create a context
	//-----------------------------------------------------
	var context cl.CL_context

	// Create a context using clCreateContext() and
	// associate it with the devices
	context = cl.CLCreateContext(nil,
		numDevices,
		devices,
		nil,
		nil,
		&status)
	utils.CHECK_STATUS(status, cl.CL_SUCCESS, "CLCreateContext")
	defer cl.CLReleaseContext(context)

	//-----------------------------------------------------
	// STEP 4: Create a command queue
	//-----------------------------------------------------
	var cmdQueue cl.CL_command_queue

	// Create a command queue using clCreateCommandQueueWithProperties(),
	// and associate it with the device you want to execute
	cmdQueue = cl.CLCreateCommandQueueWithProperties(context,
		devices[0],
		nil,
		&status)
	utils.CHECK_STATUS(status, cl.CL_SUCCESS, "CLCreateCommandQueueWithProperties")
	defer cl.CLReleaseCommandQueue(cmdQueue)

	//-----------------------------------------------------
	// STEP 5: Create device buffers
	//-----------------------------------------------------
	// initialize any device/SVM memory here.

	/* svm buffer for binary tree */
	svmTreeBuf := cl.CLSVMAlloc(context,
		cl.CL_MEM_READ_WRITE,
		cl.CL_size_t(NUMBER_OF_NODES*unsafe.Sizeof(sampleNode)),
		0)
	if nil == svmTreeBuf {
		println("clSVMAlloc(svmTreeBuf) failed.")
		return
	}
	defer cl.CLSVMFree(context, svmTreeBuf)

	/* svm buffer for search keys */
	svmSearchBuf := cl.CLSVMAlloc(context,
		cl.CL_MEM_READ_WRITE,
		cl.CL_size_t(NUMBER_OF_SEARCH_KEY*unsafe.Sizeof(sampleKey)),
		0)
	if nil == svmSearchBuf {
		println("clSVMAlloc(svmSearchBuf) failed.")
//.........这里部分代码省略.........

func main() {

	/* OpenCL data structures */
	var device []cl.CL_device_id
	var context cl.CL_context
	var queue cl.CL_command_queue
	var program *cl.CL_program
	var kernel cl.CL_kernel
	var err cl.CL_int

	/* Data and buffers */
	var data_one, data_two, result_array [100]float32
	var buffer_one, buffer_two cl.CL_mem
	var mapped_memory unsafe.Pointer

	/* Initialize arrays */
	for i := 0; i < 100; i++ {
		data_one[i] = 1.0 * float32(i)
		data_two[i] = -1.0 * float32(i)
		result_array[i] = 0.0
	}

	/* Create a device and context */
	device = utils.Create_device()
	context = cl.CLCreateContext(nil, 1, device[:], nil, nil, &err)
	if err < 0 {
		println("Couldn't create a context")
		return
	}

	/* Build the program and create the kernel */
	program = utils.Build_program(context, device[:], PROGRAM_FILE, nil)
	kernel = cl.CLCreateKernel(*program, []byte(KERNEL_FUNC), &err)
	if err < 0 {
		println("Couldn't create a kernel")
		return
	}

	/* Create buffers */
	buffer_one = cl.CLCreateBuffer(context, cl.CL_MEM_READ_WRITE|
		cl.CL_MEM_COPY_HOST_PTR, cl.CL_size_t(unsafe.Sizeof(data_one)), unsafe.Pointer(&data_one[0]), &err)
	if err < 0 {
		println("Couldn't create buffer object 1")
		return
	}
	buffer_two = cl.CLCreateBuffer(context, cl.CL_MEM_READ_WRITE|
		cl.CL_MEM_COPY_HOST_PTR, cl.CL_size_t(unsafe.Sizeof(data_two)), unsafe.Pointer(&data_two), &err)
	if err < 0 {
		println("Couldn't create buffer object 2")
		return
	}
	/* Set buffers as arguments to the kernel */
	err = cl.CLSetKernelArg(kernel, 0, cl.CL_size_t(unsafe.Sizeof(buffer_one)), unsafe.Pointer(&buffer_one))
	err |= cl.CLSetKernelArg(kernel, 1, cl.CL_size_t(unsafe.Sizeof(buffer_two)), unsafe.Pointer(&buffer_two))
	if err < 0 {
		println("Couldn't set the buffer as the kernel argument")
		return
	}

	/* Create a command queue */
	queue = cl.CLCreateCommandQueue(context, device[0], 0, &err)
	if err < 0 {
		println("Couldn't create a command queue")
		return
	}

	/* Enqueue kernel */
	err = cl.CLEnqueueTask(queue, kernel, 0, nil, nil)
	if err < 0 {
		println("Couldn't enqueue the kernel")
		return
	}

	/* Enqueue command to copy buffer one to buffer two */
	err = cl.CLEnqueueCopyBuffer(queue, buffer_one, buffer_two, 0, 0,
		cl.CL_size_t(unsafe.Sizeof(data_one)), 0, nil, nil)
	if err < 0 {
		println("Couldn't perform the buffer copy")
		return
	}

	/* Enqueue command to map buffer two to host memory */
	mapped_memory = cl.CLEnqueueMapBuffer(queue, buffer_two, cl.CL_TRUE,
		cl.CL_MAP_READ, 0, cl.CL_size_t(unsafe.Sizeof(data_two)), 0, nil, nil, &err)
	if err < 0 {
		println("Couldn't map the buffer to host memory")
		return
	}

	/* Transfer memory and unmap the buffer */
	C.memcpy(unsafe.Pointer(&result_array[0]), mapped_memory, C.size_t(unsafe.Sizeof(data_two)))
	err = cl.CLEnqueueUnmapMemObject(queue, buffer_two, mapped_memory,
		0, nil, nil)
	if err < 0 {
		println("Couldn't unmap the buffer")
		return
	}

	/* Display updated buffer */
	for i := 0; i < 10; i++ {
//.........这里部分代码省略.........

func main() {

	/* OpenCL data structures */
	var device []cl.CL_device_id
	var context cl.CL_context
	var queue cl.CL_command_queue
	var program *cl.CL_program
	var kernel cl.CL_kernel
	var err cl.CL_int

	/* Data and buffers */
	var a float32 = 6.0
	var b float32 = 2.0
	var result float32
	var a_buffer, b_buffer, output_buffer cl.CL_mem

	/* Extension data */
	var sizeofuint cl.CL_uint
	var addr_data interface{}
	var ext_data interface{}
	fp64_ext := "cl_khr_fp64"
	var ext_size cl.CL_size_t
	var options []byte

	/* Create a device and context */
	device = utils.Create_device()
	context = cl.CLCreateContext(nil, 1, device[:], nil, nil, &err)
	if err < 0 {
		println("Couldn't create a context")
		return
	}

	/* Obtain the device data */
	if cl.CLGetDeviceInfo(device[0], cl.CL_DEVICE_ADDRESS_BITS,
		cl.CL_size_t(unsafe.Sizeof(sizeofuint)), &addr_data, nil) < 0 {
		println("Couldn't read extension data")
		return
	}
	fmt.Printf("Address width: %v\n", addr_data.(cl.CL_uint))

	/* Define "FP_64" option if doubles are supported */
	cl.CLGetDeviceInfo(device[0], cl.CL_DEVICE_EXTENSIONS,
		0, nil, &ext_size)
	// ext_data = (char*)malloc(ext_size + 1);
	// ext_data[ext_size] = '\0';
	cl.CLGetDeviceInfo(device[0], cl.CL_DEVICE_EXTENSIONS,
		ext_size, &ext_data, nil)
	if strings.Contains(ext_data.(string), fp64_ext) {
		fmt.Printf("The %s extension is supported.\n", fp64_ext)
		options = []byte("-DFP_64 ")
	} else {
		fmt.Printf("The %s extension is not supported. %s\n", fp64_ext, ext_data.(string))
	}

	/* Build the program and create the kernel */
	program = utils.Build_program(context, device[:], PROGRAM_FILE, options)
	kernel = cl.CLCreateKernel(*program, KERNEL_FUNC, &err)
	if err < 0 {
		println("Couldn't create a kernel")
		return
	}

	/* Create CL buffers to hold input and output data */
	a_buffer = cl.CLCreateBuffer(context, cl.CL_MEM_READ_ONLY|
		cl.CL_MEM_COPY_HOST_PTR, cl.CL_size_t(unsafe.Sizeof(a)), unsafe.Pointer(&a), &err)
	if err < 0 {
		println("Couldn't create a memory object")
		return
	}

	b_buffer = cl.CLCreateBuffer(context, cl.CL_MEM_READ_ONLY|
		cl.CL_MEM_COPY_HOST_PTR, cl.CL_size_t(unsafe.Sizeof(b)), unsafe.Pointer(&b), nil)
	output_buffer = cl.CLCreateBuffer(context, cl.CL_MEM_WRITE_ONLY,
		cl.CL_size_t(unsafe.Sizeof(b)), nil, nil)

	/* Create kernel arguments */
	err = cl.CLSetKernelArg(kernel, 0, cl.CL_size_t(unsafe.Sizeof(a_buffer)), unsafe.Pointer(&a_buffer))
	if err < 0 {
		println("Couldn't set a kernel argument")
		return
	}
	cl.CLSetKernelArg(kernel, 1, cl.CL_size_t(unsafe.Sizeof(b_buffer)), unsafe.Pointer(&b_buffer))
	cl.CLSetKernelArg(kernel, 2, cl.CL_size_t(unsafe.Sizeof(output_buffer)), unsafe.Pointer(&output_buffer))

	/* Create a command queue */
	queue = cl.CLCreateCommandQueue(context, device[0], 0, &err)
	if err < 0 {
		println("Couldn't create a command queue")
		return
	}

	/* Enqueue kernel */
	err = cl.CLEnqueueTask(queue, kernel, 0, nil, nil)
	if err < 0 {
		println("Couldn't enqueue the kernel")
		return
	}

	/* Read and print the result */
	err = cl.CLEnqueueReadBuffer(queue, output_buffer, cl.CL_TRUE, 0,
//.........这里部分代码省略.........

func main() {

	/* OpenCL data structures */
	var device []cl.CL_device_id
	var context cl.CL_context
	var queue cl.CL_command_queue
	var program *cl.CL_program
	var kernel cl.CL_kernel
	var err cl.CL_int

	/* Data and events */
	var num_ints cl.CL_int
	var num_items [1]cl.CL_size_t
	var data [NUM_INTS]cl.CL_int
	var data_buffer cl.CL_mem
	var prof_event cl.CL_event
	var total_time cl.CL_ulong
	var time_start, time_end interface{}

	/* Initialize data */
	for i := 0; i < NUM_INTS; i++ {
		data[i] = cl.CL_int(i)
	}

	/* Set number of data points and work-items */
	num_ints = NUM_INTS
	num_items[0] = NUM_ITEMS

	/* Create a device and context */
	device = utils.Create_device()
	context = cl.CLCreateContext(nil, 1, device[:], nil, nil, &err)
	if err < 0 {
		println("Couldn't create a context")
		return
	}

	/* Build the program and create a kernel */
	program = utils.Build_program(context, device[:], PROGRAM_FILE, nil)
	kernel = cl.CLCreateKernel(*program, KERNEL_FUNC, &err)
	if err < 0 {
		println("Couldn't create a kernel")
		return
	}

	/* Create a buffer to hold data */
	data_buffer = cl.CLCreateBuffer(context,
		cl.CL_MEM_READ_WRITE|cl.CL_MEM_COPY_HOST_PTR,
		cl.CL_size_t(unsafe.Sizeof(data[0]))*NUM_INTS, unsafe.Pointer(&data[0]), &err)
	if err < 0 {
		println("Couldn't create a buffer")
		return
	}

	/* Create kernel argument */
	err = cl.CLSetKernelArg(kernel, 0, cl.CL_size_t(unsafe.Sizeof(data_buffer)), unsafe.Pointer(&data_buffer))
	if err < 0 {
		println("Couldn't set a kernel argument")
		return
	}
	cl.CLSetKernelArg(kernel, 1, cl.CL_size_t(unsafe.Sizeof(num_ints)), unsafe.Pointer(&num_ints))

	/* Create a command queue */
	queue = cl.CLCreateCommandQueue(context, device[0],
		cl.CL_QUEUE_PROFILING_ENABLE, &err)
	if err < 0 {
		println("Couldn't create a command queue")
		return
	}

	total_time = 0.0
	for i := 0; i < NUM_ITERATIONS; i++ {

		/* Enqueue kernel */
		cl.CLEnqueueNDRangeKernel(queue, kernel, 1, nil, num_items[:],
			nil, 0, nil, &prof_event)
		if err < 0 {
			println("Couldn't enqueue the kernel")
			return
		}

		/* Finish processing the queue and get profiling information */
		cl.CLFinish(queue)
		cl.CLGetEventProfilingInfo(prof_event, cl.CL_PROFILING_COMMAND_START,
			cl.CL_size_t(unsafe.Sizeof(total_time)), &time_start, nil)
		cl.CLGetEventProfilingInfo(prof_event, cl.CL_PROFILING_COMMAND_END,
			cl.CL_size_t(unsafe.Sizeof(total_time)), &time_end, nil)
		total_time += time_end.(cl.CL_ulong) - time_start.(cl.CL_ulong)
	}
	fmt.Printf("Average time = %v\n", total_time/NUM_ITERATIONS)

	/* Deallocate resources */
	cl.CLReleaseEvent(prof_event)
	cl.CLReleaseKernel(kernel)
	cl.CLReleaseMemObject(data_buffer)
	cl.CLReleaseCommandQueue(queue)
	cl.CLReleaseProgram(*program)
	cl.CLReleaseContext(context)
}

func main() {

	/* Host/device data structures */
	var device []cl.CL_device_id
	var context cl.CL_context
	var err cl.CL_int

	/* Data and buffers */
	var main_data [100]float32
	var main_buffer, sub_buffer cl.CL_mem
	var main_buffer_mem, sub_buffer_mem interface{}
	var main_buffer_size, sub_buffer_size interface{}
	var buffer_size cl.CL_size_t
	var buffer_mem cl.CL_ulong
	var region cl.CL_buffer_region

	/* Create device and context */
	device = utils.Create_device()
	context = cl.CLCreateContext(nil, 1, device[:], nil, nil, &err)
	if err < 0 {
		println("Couldn't create a context")
		return
	}

	/* Create a buffer to hold 100 floating-point values */
	main_buffer = cl.CLCreateBuffer(context, cl.CL_MEM_READ_ONLY|
		cl.CL_MEM_COPY_HOST_PTR, cl.CL_size_t(unsafe.Sizeof(main_data)), unsafe.Pointer(&main_data[0]), &err)
	if err < 0 {
		println("Couldn't create a buffer")
		return
	}

	/* Create a sub-buffer containing values 30-49 */
	region.Origin = 30 * cl.CL_size_t(unsafe.Sizeof(main_data[0]))
	region.Size = 20 * cl.CL_size_t(unsafe.Sizeof(main_data[0]))
	fmt.Printf("origin=%d, size=%d\n", region.Origin, region.Size)

	sub_buffer = cl.CLCreateSubBuffer(main_buffer, cl.CL_MEM_READ_ONLY|
		cl.CL_MEM_COPY_HOST_PTR, cl.CL_BUFFER_CREATE_TYPE_REGION, unsafe.Pointer(&region), &err)
	if err < 0 {
		fmt.Printf("Couldn't create a sub-buffer, errcode=%d\n", err)
		return
	}

	/* Obtain size information about the buffers */
	cl.CLGetMemObjectInfo(main_buffer, cl.CL_MEM_SIZE,
		cl.CL_size_t(unsafe.Sizeof(buffer_size)), &main_buffer_size, nil)
	cl.CLGetMemObjectInfo(sub_buffer, cl.CL_MEM_SIZE,
		cl.CL_size_t(unsafe.Sizeof(buffer_size)), &sub_buffer_size, nil)
	fmt.Printf("Main buffer size: %v\n", main_buffer_size.(cl.CL_size_t))
	fmt.Printf("Sub-buffer size:  %v\n", sub_buffer_size.(cl.CL_size_t))

	/* Obtain the host pointers */
	cl.CLGetMemObjectInfo(main_buffer, cl.CL_MEM_HOST_PTR, cl.CL_size_t(unsafe.Sizeof(buffer_mem)),
		&main_buffer_mem, nil)
	cl.CLGetMemObjectInfo(sub_buffer, cl.CL_MEM_HOST_PTR, cl.CL_size_t(unsafe.Sizeof(buffer_mem)),
		&sub_buffer_mem, nil)
	fmt.Printf("Main buffer memory address: %v\n", main_buffer_mem.(cl.CL_ulong))
	fmt.Printf("Sub-buffer memory address:  %v\n", sub_buffer_mem.(cl.CL_ulong))

	/* Print the address of the main data */
	fmt.Printf("Main array address: %v\n", main_data)

	/* Deallocate resources */
	cl.CLReleaseMemObject(main_buffer)
	cl.CLReleaseMemObject(sub_buffer)
	cl.CLReleaseContext(context)
}