| | |
| | | import os |
| | | import torch |
| | | import functools |
| | | |
| | | try: |
| | | import torch_blade |
| | | except Exception as e: |
| | | print(f"failed to load torch_blade: {e}") |
| | | |
| | | |
| | | def export_onnx(model, data_in=None, quantize: bool = False, opset_version: int = 14, **kwargs): |
| | | def export(model, data_in=None, quantize: bool = False, opset_version: int = 14, type='onnx', **kwargs): |
| | | model_scripts = model.export(**kwargs) |
| | | export_dir = kwargs.get("output_dir", os.path.dirname(kwargs.get("init_param"))) |
| | | os.makedirs(export_dir, exist_ok=True) |
| | |
| | | model_scripts = (model_scripts,) |
| | | for m in model_scripts: |
| | | m.eval() |
| | | _onnx( |
| | | m, |
| | | data_in=data_in, |
| | | quantize=quantize, |
| | | opset_version=opset_version, |
| | | export_dir=export_dir, |
| | | **kwargs |
| | | ) |
| | | if type == 'onnx': |
| | | _onnx( |
| | | m, |
| | | data_in=data_in, |
| | | quantize=quantize, |
| | | opset_version=opset_version, |
| | | export_dir=export_dir, |
| | | **kwargs |
| | | ) |
| | | elif type == 'torchscripts': |
| | | device = 'cuda' if torch.cuda.is_available() else 'cpu' |
| | | print("Exporting torchscripts on device {}".format(device)) |
| | | _torchscripts( |
| | | m, |
| | | path=export_dir, |
| | | device=device |
| | | ) |
| | | elif type == "bladedisc": |
| | | assert ( |
| | | torch.cuda.is_available() |
| | | ), "Currently bladedisc optimization for FunASR only supports GPU" |
| | | # bladedisc only optimizes encoder/decoder modules |
| | | if hasattr(m, "encoder") and hasattr(m, "decoder"): |
| | | _bladedisc_opt_for_encdec(m, path=export_dir, enable_fp16=True) |
| | | else: |
| | | _torchscripts(m, path=export_dir, device="cuda") |
| | | print("output dir: {}".format(export_dir)) |
| | | |
| | | return export_dir |
| | |
| | | |
| | | verbose = kwargs.get("verbose", False) |
| | | |
| | | export_name = model.export_name() if hasattr(model, "export_name") else "model.onnx" |
| | | export_name = model.export_name + '.onnx' |
| | | model_path = os.path.join(export_dir, export_name) |
| | | torch.onnx.export( |
| | | model, |
| | |
| | | weight_type=QuantType.QUInt8, |
| | | nodes_to_exclude=nodes_to_exclude, |
| | | ) |
| | | |
| | | |
| | | def _torchscripts(model, path, device='cuda'): |
| | | dummy_input = model.export_dummy_inputs() |
| | | |
| | | if device == 'cuda': |
| | | model = model.cuda() |
| | | if isinstance(dummy_input, torch.Tensor): |
| | | dummy_input = dummy_input.cuda() |
| | | else: |
| | | dummy_input = tuple([i.cuda() for i in dummy_input]) |
| | | |
| | | model_script = torch.jit.trace(model, dummy_input) |
| | | model_script.save(os.path.join(path, f'{model.export_name}.torchscripts')) |
| | | |
| | | |
| | | def _bladedisc_opt(model, model_inputs, enable_fp16=True): |
| | | model = model.eval() |
| | | torch_config = torch_blade.config.Config() |
| | | torch_config.enable_fp16 = enable_fp16 |
| | | with torch.no_grad(), torch_config: |
| | | opt_model = torch_blade.optimize( |
| | | model, |
| | | allow_tracing=True, |
| | | model_inputs=model_inputs, |
| | | ) |
| | | return opt_model |
| | | |
| | | |
| | | def _rescale_input_hook(m, x, scale): |
| | | if len(x) > 1: |
| | | return (x[0] / scale, *x[1:]) |
| | | else: |
| | | return (x[0] / scale,) |
| | | |
| | | |
| | | def _rescale_output_hook(m, x, y, scale): |
| | | if isinstance(y, tuple): |
| | | return (y[0] / scale, *y[1:]) |
| | | else: |
| | | return y / scale |
| | | |
| | | |
| | | def _rescale_encoder_model(model, input_data): |
| | | # Calculate absmax |
| | | absmax = torch.tensor(0).cuda() |
| | | |
| | | def stat_input_hook(m, x, y): |
| | | val = x[0] if isinstance(x, tuple) else x |
| | | absmax.copy_(torch.max(absmax, val.detach().abs().max())) |
| | | |
| | | encoders = model.encoder.model.encoders |
| | | hooks = [m.register_forward_hook(stat_input_hook) for m in encoders] |
| | | model = model.cuda() |
| | | model(*input_data) |
| | | for h in hooks: |
| | | h.remove() |
| | | |
| | | # Rescale encoder modules |
| | | fp16_scale = int(2 * absmax // 65536) |
| | | print(f"rescale encoder modules with factor={fp16_scale}") |
| | | model.encoder.model.encoders0.register_forward_pre_hook( |
| | | functools.partial(_rescale_input_hook, scale=fp16_scale), |
| | | ) |
| | | for name, m in model.encoder.model.named_modules(): |
| | | if name.endswith("self_attn"): |
| | | m.register_forward_hook( |
| | | functools.partial(_rescale_output_hook, scale=fp16_scale) |
| | | ) |
| | | if name.endswith("feed_forward.w_2"): |
| | | state_dict = {k: v / fp16_scale for k, v in m.state_dict().items()} |
| | | m.load_state_dict(state_dict) |
| | | |
| | | |
| | | def _bladedisc_opt_for_encdec(model, path, enable_fp16): |
| | | # Get input data |
| | | # TODO: better to use real data |
| | | input_data = model.export_dummy_inputs() |
| | | if isinstance(input_data, torch.Tensor): |
| | | input_data = input_data.cuda() |
| | | else: |
| | | input_data = tuple([i.cuda() for i in input_data]) |
| | | |
| | | # Get input data for decoder module |
| | | decoder_inputs = list() |
| | | |
| | | def get_input_hook(m, x): |
| | | decoder_inputs.extend(list(x)) |
| | | |
| | | hook = model.decoder.register_forward_pre_hook(get_input_hook) |
| | | model = model.cuda() |
| | | model(*input_data) |
| | | hook.remove() |
| | | |
| | | # Prevent FP16 overflow |
| | | if enable_fp16: |
| | | _rescale_encoder_model(model, input_data) |
| | | |
| | | # Export and optimize encoder/decoder modules |
| | | model.encoder = _bladedisc_opt(model.encoder, input_data[:2]) |
| | | model.decoder = _bladedisc_opt(model.decoder, tuple(decoder_inputs)) |
| | | model_script = torch.jit.trace(model, input_data) |
| | | model_script.save(os.path.join(path, f"{model.export_name}_blade.torchscripts")) |