def main( config: str = DEFAULT_YAML, tfrecords: bool = False, sentence_piece: bool = False, subwords: bool = False, bs: int = None, spx: int = 1, metadata: str = None, static_length: bool = False, devices: list = [0], mxp: bool = False, pretrained: str = None, ): tf.keras.backend.clear_session() tf.config.optimizer.set_experimental_options({"auto_mixed_precision": mxp}) strategy = env_util.setup_strategy(devices) config = Config(config) speech_featurizer, text_featurizer = featurizer_helpers.prepare_featurizers( config=config, subwords=subwords, sentence_piece=sentence_piece, ) train_dataset, eval_dataset = dataset_helpers.prepare_training_datasets( config=config, speech_featurizer=speech_featurizer, text_featurizer=text_featurizer, tfrecords=tfrecords, metadata=metadata, ) if not static_length: speech_featurizer.reset_length() text_featurizer.reset_length() train_data_loader, eval_data_loader, global_batch_size = dataset_helpers.prepare_training_data_loaders( config=config, train_dataset=train_dataset, eval_dataset=eval_dataset, strategy=strategy, batch_size=bs, ) with strategy.scope(): jasper = Jasper(**config.model_config, vocabulary_size=text_featurizer.num_classes) jasper.make(speech_featurizer.shape, batch_size=global_batch_size) if pretrained: jasper.load_weights(pretrained, by_name=True, skip_mismatch=True) jasper.summary(line_length=100) jasper.compile( optimizer=config.learning_config.optimizer_config, experimental_steps_per_execution=spx, global_batch_size=global_batch_size, blank=text_featurizer.blank, ) callbacks = [ tf.keras.callbacks.ModelCheckpoint(**config.learning_config.running_config.checkpoint), tf.keras.callbacks.experimental.BackupAndRestore(config.learning_config.running_config.states_dir), tf.keras.callbacks.TensorBoard(**config.learning_config.running_config.tensorboard), ] jasper.fit( train_data_loader, epochs=config.learning_config.running_config.num_epochs, validation_data=eval_data_loader, callbacks=callbacks, steps_per_epoch=train_dataset.total_steps, validation_steps=eval_dataset.total_steps if eval_data_loader else None, )
global_batch_size = args.bs or config.learning_config.running_config.batch_size global_batch_size *= strategy.num_replicas_in_sync train_data_loader = train_dataset.create(global_batch_size) eval_data_loader = eval_dataset.create(global_batch_size) with strategy.scope(): # build model jasper = Jasper(**config.model_config, vocabulary_size=text_featurizer.num_classes) jasper.make(speech_featurizer.shape, batch_size=global_batch_size) if args.pretrained: jasper.load_weights(args.pretrained, by_name=True, skip_mismatch=True) jasper.summary(line_length=100) jasper.compile(optimizer=config.learning_config.optimizer_config, experimental_steps_per_execution=args.spx, global_batch_size=global_batch_size, blank=text_featurizer.blank) callbacks = [ tf.keras.callbacks.ModelCheckpoint( **config.learning_config.running_config.checkpoint), tf.keras.callbacks.experimental.BackupAndRestore( config.learning_config.running_config.states_dir), tf.keras.callbacks.TensorBoard( **config.learning_config.running_config.tensorboard) ] jasper.fit( train_data_loader, epochs=config.learning_config.running_config.num_epochs, validation_data=eval_data_loader,