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450 lines
18 KiB
450 lines
18 KiB
# Copyright (c) 2021 PaddlePaddle Authors. All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Contains U2 model."""
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import json
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import os
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import time
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from collections import defaultdict
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from contextlib import nullcontext
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import jsonlines
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import numpy as np
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import paddle
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from paddle import distributed as dist
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from paddlespeech.s2t.frontend.featurizer import TextFeaturizer
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from paddlespeech.s2t.frontend.utility import load_dict
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from paddlespeech.s2t.io.dataloader import DataLoaderFactory
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from paddlespeech.s2t.models.u2 import U2Model
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from paddlespeech.s2t.training.optimizer import OptimizerFactory
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from paddlespeech.s2t.training.scheduler import LRSchedulerFactory
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from paddlespeech.s2t.training.timer import Timer
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from paddlespeech.s2t.training.trainer import Trainer
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from paddlespeech.s2t.utils import ctc_utils
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from paddlespeech.s2t.utils import error_rate
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from paddlespeech.s2t.utils import layer_tools
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from paddlespeech.s2t.utils import mp_tools
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from paddlespeech.s2t.utils.log import Log
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from paddlespeech.s2t.utils.utility import UpdateConfig
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logger = Log(__name__).getlog()
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class U2Trainer(Trainer):
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def __init__(self, config, args):
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super().__init__(config, args)
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def train_batch(self, batch_index, batch_data, msg):
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train_conf = self.config
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start = time.time()
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# forward
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utt, audio, audio_len, text, text_len = batch_data
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loss, attention_loss, ctc_loss = self.model(audio, audio_len, text,
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text_len)
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# loss div by `batch_size * accum_grad`
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loss /= train_conf.accum_grad
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losses_np = {'loss': float(loss) * train_conf.accum_grad}
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if attention_loss:
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losses_np['att_loss'] = float(attention_loss)
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if ctc_loss:
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losses_np['ctc_loss'] = float(ctc_loss)
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# loss backward
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if (batch_index + 1) % train_conf.accum_grad != 0:
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# Disable gradient synchronizations across DDP processes.
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# Within this context, gradients will be accumulated on module
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# variables, which will later be synchronized.
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context = self.model.no_sync if (hasattr(self.model, "no_sync") and
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self.parallel) else nullcontext
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else:
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# Used for single gpu training and DDP gradient synchronization
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# processes.
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context = nullcontext
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with context():
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loss.backward()
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layer_tools.print_grads(self.model, print_func=None)
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# optimizer step
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if (batch_index + 1) % train_conf.accum_grad == 0:
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self.optimizer.step()
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self.optimizer.clear_grad()
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self.lr_scheduler.step()
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self.iteration += 1
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iteration_time = time.time() - start
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if (batch_index + 1) % train_conf.log_interval == 0:
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msg += "train time: {:>.3f}s, ".format(iteration_time)
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msg += "batch size: {}, ".format(self.config.batch_size)
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msg += "accum: {}, ".format(train_conf.accum_grad)
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msg += ', '.join('{}: {:>.6f}'.format(k, v)
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for k, v in losses_np.items())
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logger.info(msg)
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if dist.get_rank() == 0 and self.visualizer:
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losses_np_v = losses_np.copy()
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losses_np_v.update({"lr": self.lr_scheduler()})
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for key, val in losses_np_v.items():
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self.visualizer.add_scalar(
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tag="train/" + key, value=val, step=self.iteration - 1)
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@paddle.no_grad()
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def valid(self):
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self.model.eval()
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if not self.use_streamdata:
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logger.info(f"Valid Total Examples: {len(self.valid_loader.dataset)}")
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valid_losses = defaultdict(list)
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num_seen_utts = 1
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total_loss = 0.0
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for i, batch in enumerate(self.valid_loader):
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utt, audio, audio_len, text, text_len = batch
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loss, attention_loss, ctc_loss = self.model(audio, audio_len, text,
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text_len)
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if paddle.isfinite(loss):
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num_utts = batch[1].shape[0]
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num_seen_utts += num_utts
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total_loss += float(loss) * num_utts
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valid_losses['val_loss'].append(float(loss))
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if attention_loss:
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valid_losses['val_att_loss'].append(float(attention_loss))
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if ctc_loss:
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valid_losses['val_ctc_loss'].append(float(ctc_loss))
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if (i + 1) % self.config.log_interval == 0:
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valid_dump = {k: np.mean(v) for k, v in valid_losses.items()}
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valid_dump['val_history_loss'] = total_loss / num_seen_utts
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# logging
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msg = f"Valid: Rank: {dist.get_rank()}, "
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msg += "epoch: {}, ".format(self.epoch)
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msg += "step: {}, ".format(self.iteration)
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if not self.use_streamdata:
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msg += "batch: {}/{}, ".format(i + 1, len(self.valid_loader))
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msg += ', '.join('{}: {:>.6f}'.format(k, v)
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for k, v in valid_dump.items())
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logger.info(msg)
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logger.info('Rank {} Val info val_loss {}'.format(
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dist.get_rank(), total_loss / num_seen_utts))
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return total_loss, num_seen_utts
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def do_train(self):
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"""The training process control by step."""
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# !!!IMPORTANT!!!
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# Try to export the model by script, if fails, we should refine
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# the code to satisfy the script export requirements
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# script_model = paddle.jit.to_static(self.model)
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# script_model_path = str(self.checkpoint_dir / 'init')
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# paddle.jit.save(script_model, script_model_path)
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self.before_train()
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if not self.use_streamdata:
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logger.info(f"Train Total Examples: {len(self.train_loader.dataset)}")
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while self.epoch < self.config.n_epoch:
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with Timer("Epoch-Train Time Cost: {}"):
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self.model.train()
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try:
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data_start_time = time.time()
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for batch_index, batch in enumerate(self.train_loader):
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dataload_time = time.time() - data_start_time
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msg = "Train: Rank: {}, ".format(dist.get_rank())
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msg += "epoch: {}, ".format(self.epoch)
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msg += "step: {}, ".format(self.iteration)
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if not self.use_streamdata:
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msg += "batch : {}/{}, ".format(batch_index + 1,
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len(self.train_loader))
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msg += "lr: {:>.8f}, ".format(self.lr_scheduler())
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msg += "data time: {:>.3f}s, ".format(dataload_time)
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self.train_batch(batch_index, batch, msg)
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self.after_train_batch()
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data_start_time = time.time()
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except Exception as e:
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logger.error(e)
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raise e
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with Timer("Eval Time Cost: {}"):
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total_loss, num_seen_utts = self.valid()
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if dist.get_world_size() > 1:
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num_seen_utts = paddle.to_tensor(num_seen_utts)
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# the default operator in all_reduce function is sum.
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dist.all_reduce(num_seen_utts)
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total_loss = paddle.to_tensor(total_loss)
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dist.all_reduce(total_loss)
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cv_loss = total_loss / num_seen_utts
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cv_loss = float(cv_loss)
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else:
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cv_loss = total_loss / num_seen_utts
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logger.info(
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'Epoch {} Val info val_loss {}'.format(self.epoch, cv_loss))
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if self.visualizer:
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self.visualizer.add_scalar(
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tag='eval/cv_loss', value=cv_loss, step=self.epoch)
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self.visualizer.add_scalar(
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tag='eval/lr', value=self.lr_scheduler(), step=self.epoch)
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self.save(tag=self.epoch, infos={'val_loss': cv_loss})
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self.new_epoch()
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def setup_dataloader(self):
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self.use_streamdata = config.get("use_stream_data", False)
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if self.train:
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config = self.config.clone()
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self.train_loader = DataLoaderFactory.get_dataloader('train', config, self.args)
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config = self.config.clone()
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config['preprocess_config'] = None
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self.valid_loader = DataLoaderFactory.get_dataloader('valid', config, self.args)
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logger.info("Setup train/valid Dataloader!")
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else:
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config = self.config.clone()
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config['preprocess_config'] = None
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self.test_loader = DataLoaderFactory.get_dataloader('test', config, self.args)
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config = self.config.clone()
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config['preprocess_config'] = None
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self.align_loader = DataLoaderFactory.get_dataloader('align', config, self.args)
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logger.info("Setup test/align Dataloader!")
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def setup_model(self):
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config = self.config
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# model
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model_conf = config
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with UpdateConfig(model_conf):
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model_conf.input_dim = self.train_loader.feat_dim
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model_conf.output_dim = self.train_loader.vocab_size
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model = U2Model.from_config(model_conf)
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if self.parallel:
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model = paddle.DataParallel(model)
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layer_tools.print_params(model, logger.info)
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# lr
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scheduler_conf = config.scheduler_conf
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scheduler_args = {
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"learning_rate": scheduler_conf.lr,
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"warmup_steps": scheduler_conf.warmup_steps,
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"gamma": scheduler_conf.lr_decay,
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"d_model": model_conf.encoder_conf.output_size,
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"verbose": False,
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}
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lr_scheduler = LRSchedulerFactory.from_args(config.scheduler,
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scheduler_args)
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# opt
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def optimizer_args(
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config,
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parameters,
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lr_scheduler=None, ):
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optim_conf = config.optim_conf
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return {
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"grad_clip": optim_conf.global_grad_clip,
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"weight_decay": optim_conf.weight_decay,
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"learning_rate": lr_scheduler,
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"parameters": parameters,
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}
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optimzer_args = optimizer_args(config, model.parameters(), lr_scheduler)
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optimizer = OptimizerFactory.from_args(config.optim, optimzer_args)
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self.model = model
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self.lr_scheduler = lr_scheduler
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self.optimizer = optimizer
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logger.info("Setup model/optimizer/lr_scheduler!")
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class U2Tester(U2Trainer):
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def __init__(self, config, args):
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super().__init__(config, args)
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self.text_feature = TextFeaturizer(
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unit_type=self.config.unit_type,
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vocab=self.config.vocab_filepath,
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spm_model_prefix=self.config.spm_model_prefix)
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self.vocab_list = self.text_feature.vocab_list
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def id2token(self, texts, texts_len, text_feature):
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""" ord() id to chr() chr """
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trans = []
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for text, n in zip(texts, texts_len):
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n = n.numpy().item()
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ids = text[:n]
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trans.append(text_feature.defeaturize(ids.numpy().tolist()))
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return trans
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def compute_metrics(self,
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utts,
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audio,
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audio_len,
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texts,
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texts_len,
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fout=None):
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decode_cfg = self.config.decode
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errors_sum, len_refs, num_ins = 0.0, 0, 0
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errors_func = error_rate.char_errors if decode_cfg.error_rate_type == 'cer' else error_rate.word_errors
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error_rate_func = error_rate.cer if decode_cfg.error_rate_type == 'cer' else error_rate.wer
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start_time = time.time()
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target_transcripts = self.id2token(texts, texts_len, self.text_feature)
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result_transcripts, result_tokenids = self.model.decode(
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audio,
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audio_len,
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text_feature=self.text_feature,
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decoding_method=decode_cfg.decoding_method,
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beam_size=decode_cfg.beam_size,
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ctc_weight=decode_cfg.ctc_weight,
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decoding_chunk_size=decode_cfg.decoding_chunk_size,
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num_decoding_left_chunks=decode_cfg.num_decoding_left_chunks,
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simulate_streaming=decode_cfg.simulate_streaming)
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decode_time = time.time() - start_time
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for i, (utt, target, result, rec_tids) in enumerate(
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zip(utts, target_transcripts, result_transcripts,
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result_tokenids)):
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errors, len_ref = errors_func(target, result)
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errors_sum += errors
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len_refs += len_ref
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num_ins += 1
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if fout:
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fout.write({
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"utt": utt,
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"refs": [target],
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"hyps": [result],
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"hyps_tokenid": [rec_tids],
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})
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logger.info(f"Utt: {utt}")
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logger.info(f"Ref: {target}")
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logger.info(f"Hyp: {result}")
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logger.info(
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"One example error rate [%s] = %f" %
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(decode_cfg.error_rate_type, error_rate_func(target, result)))
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return dict(
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errors_sum=errors_sum,
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len_refs=len_refs,
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num_ins=num_ins, # num examples
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error_rate=errors_sum / len_refs,
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error_rate_type=decode_cfg.error_rate_type,
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num_frames=audio_len.sum().numpy().item(),
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decode_time=decode_time)
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@mp_tools.rank_zero_only
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@paddle.no_grad()
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def test(self):
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assert self.args.result_file
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self.model.eval()
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if not self.use_streamdata:
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logger.info(f"Test Total Examples: {len(self.test_loader.dataset)}")
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stride_ms = self.config.stride_ms
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error_rate_type = None
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errors_sum, len_refs, num_ins = 0.0, 0, 0
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num_frames = 0.0
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num_time = 0.0
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with jsonlines.open(self.args.result_file, 'w') as fout:
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for i, batch in enumerate(self.test_loader):
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metrics = self.compute_metrics(*batch, fout=fout)
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num_frames += metrics['num_frames']
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num_time += metrics["decode_time"]
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errors_sum += metrics['errors_sum']
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len_refs += metrics['len_refs']
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num_ins += metrics['num_ins']
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error_rate_type = metrics['error_rate_type']
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rtf = num_time / (num_frames * stride_ms)
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logger.info(
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"RTF: %f, Error rate [%s] (%d/?) = %f" %
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(rtf, error_rate_type, num_ins, errors_sum / len_refs))
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rtf = num_time / (num_frames * stride_ms)
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msg = "Test: "
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msg += "epoch: {}, ".format(self.epoch)
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msg += "step: {}, ".format(self.iteration)
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msg += "RTF: {}, ".format(rtf)
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msg += "Final error rate [%s] (%d/%d) = %f" % (
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error_rate_type, num_ins, num_ins, errors_sum / len_refs)
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logger.info(msg)
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# test meta results
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err_meta_path = os.path.splitext(self.args.result_file)[0] + '.err'
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err_type_str = "{}".format(error_rate_type)
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with open(err_meta_path, 'w') as f:
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data = json.dumps({
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"epoch":
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self.epoch,
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"step":
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self.iteration,
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"rtf":
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rtf,
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error_rate_type:
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errors_sum / len_refs,
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"dataset_hour": (num_frames * stride_ms) / 1000.0 / 3600.0,
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"process_hour":
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num_time / 1000.0 / 3600.0,
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"num_examples":
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num_ins,
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"err_sum":
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errors_sum,
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"ref_len":
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len_refs,
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"decode_method":
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self.config.decode.decoding_method,
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})
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f.write(data + '\n')
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@paddle.no_grad()
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def align(self):
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ctc_utils.ctc_align(self.config, self.model, self.align_loader,
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self.config.decode.decode_batch_size,
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self.config.stride_ms, self.vocab_list,
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self.args.result_file)
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def load_inferspec(self):
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"""infer model and input spec.
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Returns:
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nn.Layer: inference model
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List[paddle.static.InputSpec]: input spec.
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"""
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from paddlespeech.s2t.models.u2 import U2InferModel
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infer_model = U2InferModel.from_pretrained(self.test_loader,
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self.config.clone(),
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self.args.checkpoint_path)
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feat_dim = self.test_loader.feat_dim
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input_spec = [
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paddle.static.InputSpec(shape=[1, None, feat_dim],
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dtype='float32'), # audio, [B,T,D]
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paddle.static.InputSpec(shape=[1],
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dtype='int64'), # audio_length, [B]
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]
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return infer_model, input_spec
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@paddle.no_grad()
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def export(self):
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infer_model, input_spec = self.load_inferspec()
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assert isinstance(input_spec, list), type(input_spec)
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infer_model.eval()
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static_model = paddle.jit.to_static(infer_model, input_spec=input_spec)
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logger.info(f"Export code: {static_model.forward.code}")
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paddle.jit.save(static_model, self.args.export_path)
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def setup_dict(self):
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# load dictionary for debug log
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self.args.char_list = load_dict(self.args.dict_path,
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"maskctc" in self.args.model_name)
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def setup(self):
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super().setup()
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self.setup_dict()
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