コード例 #1
0
ファイル: kernel1x.go プロジェクト: xfong/gocl
func (this *kernel) EnqueueTask(queue CommandQueue,
	event_wait_list []Event) (Event, error) {
	var errCode cl.CL_int
	var event_id cl.CL_event

	numEvents := cl.CL_uint(len(event_wait_list))
	events := make([]cl.CL_event, numEvents)
	for i := cl.CL_uint(0); i < numEvents; i++ {
		events[i] = event_wait_list[i].GetID()
	}

	if errCode = cl.CLEnqueueTask(queue.GetID(),
		this.kernel_id,
		numEvents,
		events,
		&event_id); errCode != cl.CL_SUCCESS {
		return nil, fmt.Errorf("EnqueueTask failure with errcode_ret %d: %s", errCode, cl.ERROR_CODES_STRINGS[-errCode])
	} else {
		return &event{event_id}, nil
	}
}
コード例 #2
0
ファイル: queue_test.go プロジェクト: xfong/gocl
func TestQueue(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 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

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

	/* Access the first GPU/CPU */
	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 < 0 {
		t.Errorf("Couldn't find any devices")
	}

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

	/* Read each program file and place content into buffer array */
	program_handle, err1 := os.Open("blank.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 program from file */
	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 the kernel */
	kernel = cl.CLCreateKernel(program, []byte("blank"), &err)
	if err < 0 {
		t.Errorf("Couldn't create the kernel")
	}

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

	/* Enqueue the kernel execution command */
	err = cl.CLEnqueueTask(queue, kernel, 0, nil, nil)
	if err < 0 {
		t.Errorf("Couldn't enqueue the kernel execution command")
	} else {
		t.Logf("Successfully queued kernel.\n")
	}

	/* Deallocate resources */
	cl.CLReleaseCommandQueue(queue)
	cl.CLReleaseKernel(kernel)
	cl.CLReleaseProgram(program)
	cl.CLReleaseContext(context)
}
コード例 #3
0
ファイル: select_testing.go プロジェクト: xfong/gocl
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)
}
コード例 #4
0
ファイル: vector_bytes.go プロジェクト: xfong/gocl
func main() {

	/* Host/device 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 test [16]byte
	var test_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
	}

	/* 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 write-only buffer to hold the output data */
	test_buffer = cl.CLCreateBuffer(context, cl.CL_MEM_WRITE_ONLY,
		cl.CL_size_t(unsafe.Sizeof(test)), 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(test_buffer)), unsafe.Pointer(&test_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 */
	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, test_buffer, cl.CL_TRUE, 0,
		cl.CL_size_t(unsafe.Sizeof(test)), unsafe.Pointer(&test), 0, nil, nil)
	if err < 0 {
		println("Couldn't read the buffer")
		return
	}
	for i := 0; i < 15; i++ {
		fmt.Printf("0x%X, ", test[i])
	}
	fmt.Printf("0x%X\n", test[15])

	/* Deallocate resources */
	cl.CLReleaseMemObject(test_buffer)
	cl.CLReleaseKernel(kernel)
	cl.CLReleaseCommandQueue(queue)
	cl.CLReleaseProgram(*program)
	cl.CLReleaseContext(context)
}
コード例 #5
0
ファイル: user_event.go プロジェクト: xfong/gocl
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 data []float32
	var data_buffer cl.CL_mem
	var user_event, kernel_event, read_event [1]cl.CL_event

	/* Initialize data */
	data = make([]float32, 4)
	for i := 0; i < 4; i++ {
		data[i] = float32(i) * 1.0
	}

	/* 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 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]))*4, 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
	}

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

	/* Configure events */
	user_event[0] = cl.CLCreateUserEvent(context, &err)
	if err < 0 {
		println("Couldn't enqueue the kernel")
		return
	}

	/* Enqueue kernel */
	err = cl.CLEnqueueTask(queue, kernel, 1, user_event[:], &kernel_event[0])
	if err < 0 {
		println("Couldn't enqueue the kernel")
		return
	}

	/* Read the buffer */
	err = cl.CLEnqueueReadBuffer(queue, data_buffer, cl.CL_FALSE, 0,
		cl.CL_size_t(unsafe.Sizeof(data[0]))*4, unsafe.Pointer(&data[0]), 1, kernel_event[:], &read_event[0])
	if err < 0 {
		println("Couldn't read the buffer")
		return
	}

	/* Set callback for event */
	err = cl.CLSetEventCallback(read_event[0], cl.CL_COMPLETE,
		read_complete, unsafe.Pointer(&data))
	if err < 0 {
		println("Couldn't set callback for event")
		return
	}

	/* Sleep for a second to demonstrate the that commands haven't
	   started executing. Then prompt user */
	time.Sleep(1)
	fmt.Printf("Old data: %4.2f, %4.2f, %4.2f, %4.2f\n",
		data[0], data[1], data[2], data[3])
	fmt.Printf("Press ENTER to continue.\n")
	//getchar();
	reader := bufio.NewReader(os.Stdin)
	reader.ReadString('\n')

	/* Set user event to success */
	cl.CLSetUserEventStatus(user_event[0], cl.CL_SUCCESS)

	/* Deallocate resources */
	cl.CLReleaseEvent(read_event[0])
	cl.CLReleaseEvent(kernel_event[0])
	cl.CLReleaseEvent(user_event[0])
	cl.CLReleaseMemObject(data_buffer)
	cl.CLReleaseKernel(kernel)
	cl.CLReleaseCommandQueue(queue)
	cl.CLReleaseProgram(*program)
	cl.CLReleaseContext(context)
}
コード例 #6
0
ファイル: double_testing.go プロジェクト: xfong/gocl
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,
		cl.CL_size_t(unsafe.Sizeof(result)), unsafe.Pointer(&result), 0, nil, nil)
	if err < 0 {
		println("Couldn't read the output buffer")
		return
	}
	fmt.Printf("The kernel result is %f\n", result)

	/* Deallocate resources */
	cl.CLReleaseMemObject(a_buffer)
	cl.CLReleaseMemObject(b_buffer)
	cl.CLReleaseMemObject(output_buffer)
	cl.CLReleaseKernel(kernel)
	cl.CLReleaseCommandQueue(queue)
	cl.CLReleaseProgram(*program)
	cl.CLReleaseContext(context)
}
コード例 #7
0
ファイル: map_copy.go プロジェクト: xfong/gocl
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++ {
		for j := 0; j < 10; j++ {
			fmt.Printf("%6.1f", result_array[j+i*10])
		}
		fmt.Printf("\n")
	}

	/* Deallocate resources */
	cl.CLReleaseMemObject(buffer_one)
	cl.CLReleaseMemObject(buffer_two)
	cl.CLReleaseKernel(kernel)
	cl.CLReleaseCommandQueue(queue)
	cl.CLReleaseProgram(*program)
	cl.CLReleaseContext(context)
}
コード例 #8
0
ファイル: buffer_testing.go プロジェクト: xfong/gocl
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 */
	cl.CLReleaseMemObject(matrix_buffer)
	cl.CLReleaseKernel(kernel)
	cl.CLReleaseCommandQueue(queue)
	cl.CLReleaseProgram(*program)
	cl.CLReleaseContext(context)
}
コード例 #9
0
ファイル: profile_read.go プロジェクト: xfong/gocl
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_vectors cl.CL_int
	var data [NUM_BYTES]byte
	var data_buffer cl.CL_mem
	var prof_event cl.CL_event
	var total_time cl.CL_ulong
	var time_start, time_end interface{}
	var mapped_memory unsafe.Pointer

	/* 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]))*NUM_BYTES, 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
	}

	/* Tell kernel number of char16 vectors */
	num_vectors = NUM_BYTES / 16
	cl.CLSetKernelArg(kernel, 1, cl.CL_size_t(unsafe.Sizeof(num_vectors)), unsafe.Pointer(&num_vectors))

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

		if PROFILE_READ == 1 {
			/* Read the buffer */
			err = cl.CLEnqueueReadBuffer(queue, data_buffer, cl.CL_TRUE, 0,
				cl.CL_size_t(unsafe.Sizeof(data[0]))*NUM_BYTES, unsafe.Pointer(&data[0]), 0, nil, &prof_event)
			if err < 0 {
				println("Couldn't read the buffer")
				return
			}
		} else {
			/* Create memory map */
			mapped_memory = cl.CLEnqueueMapBuffer(queue, data_buffer, cl.CL_TRUE,
				cl.CL_MAP_READ, 0, cl.CL_size_t(unsafe.Sizeof(data[0]))*NUM_BYTES, 0, nil, &prof_event, &err)
			if err < 0 {
				println("Couldn't map the buffer to host memory")
				return
			}
		}

		/* Get profiling information */
		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)

		if PROFILE_READ == 0 {
			/* Unmap the buffer */
			err = cl.CLEnqueueUnmapMemObject(queue, data_buffer, mapped_memory,
				0, nil, nil)
			if err < 0 {
				println("Couldn't unmap the buffer")
				return
			}
		}
	}

	if PROFILE_READ == 1 {
		fmt.Printf("Average read time: %v\n", total_time/NUM_ITERATIONS)
	} else {
		fmt.Printf("Average map time: %v\n", total_time/NUM_ITERATIONS)
	}

	/* Deallocate resources */
	cl.CLReleaseEvent(prof_event)
	cl.CLReleaseMemObject(data_buffer)
	cl.CLReleaseKernel(kernel)
	cl.CLReleaseCommandQueue(queue)
	cl.CLReleaseProgram(*program)
	cl.CLReleaseContext(context)
}
コード例 #10
0
ファイル: polar_rect.go プロジェクト: xfong/gocl
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)
}