[Speech Examples] Add pytorch speech pretraining (#13877)

* adapt wav2vec2

* add example

* add files

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* correct gradient checkpoitning

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examples/pytorch/_tests_requirements.txt

@@ -3,6 +3,7 @@ scikit-learn
 seqeval
 psutil
 sacrebleu >= 1.4.12
+accelerate >= 0.5.0
 rouge-score
 tensorflow_datasets
 matplotlib

examples/pytorch/speech-pretraining/README.md

@@ -0,0 +1,124 @@
+<!---
+Copyright 2021 The HuggingFace Team. All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+-->
+
+# Speech Recognition Pre-Training
+
+
+## Wav2Vec2 Speech Pre-Training
+
+The script [`run_speech_wav2vec2_pretraining_no_trainer.py`](https://github.com/huggingface/transformers/blob/master/examples/pytorch/speech-pretraining/run_wav2vec2_pretraining_no_trainer.py) can be used to pre-train a [Wav2Vec2](https://huggingface.co/transformers/model_doc/wav2vec2.html?highlight=wav2vec2) model from scratch.
+
+In the script [`run_speech_wav2vec2_pretraining_no_trainer`](https://github.com/huggingface/transformers/blob/master/examples/pytorch/speech-pretraining/run_wav2vec2_pretraining_no_trainer.py), a Wav2Vec2 model is pre-trained on audio data alone using [Wav2Vec2's contrastive loss objective](https://arxiv.org/abs/2006.11477).
+
+The following examples show how to fine-tune a `"base"`-sized Wav2Vec2 model as well as a `"large"`-sized Wav2Vec2 model using [`accelerate`](https://github.com/huggingface/accelerate).
+
+
+---
+**NOTE 1**
+
+Wav2Vec2's pre-training is known to be quite unstable.
+It is advised to do a couple of test runs with a smaller dataset,
+*i.e.* `--dataset_config_names clean clean`, `--dataset_split_names validation test`
+to find good hyper-parameters for `learning_rate`, `batch_size`, `num_warmup_steps`,
+and the optimizer.
+A good metric to observe during training is the gradient norm which should ideally be between 0.5 and 2.
+
+---
+
+---
+**NOTE 2**
+
+When training a model on large datasets it is recommended to run the data preprocessing 
+in a first run in a **non-distributed** mode via `--preprocessing_only` so that 
+when running the model in **distributed** mode in a second step the preprocessed data
+can easily be loaded on each distributed device.
+
+---
+
+### Demo
+
+In this demo run we pre-train a `"base-sized"` Wav2Vec2 model simply only on the validation
+and test data of [librispeech_asr](https://huggingface.co/datasets/librispeech_asr).
+
+The demo is run on two Titan RTX (24 GB RAM each). In case you have less RAM available 
+per device, consider reducing `--batch_size` and/or the `--max_duration_in_seconds`.
+
+
+```bash
+accelerate launch run_wav2vec2_pretraining_no_trainer.py \
+ --dataset_name="librispeech_asr" \
+ --dataset_config_names clean clean \
+ --dataset_split_names validation test \
+ --model_name_or_path="patrickvonplaten/wav2vec2-base-v2" \
+ --output_dir="./wav2vec2-pretrained-demo" \
+ --max_train_steps="20000" \
+ --num_warmup_steps="32000" \
+ --gradient_accumulation_steps="8" \
+ --learning_rate="0.005" \
+ --weight_decay="0.01" \
+ --max_duration_in_seconds="20.0" \
+ --min_duration_in_seconds="2.0" \
+ --logging_steps="1" \
+ --saving_steps="10000" \
+ --per_device_train_batch_size="8" \
+ --per_device_eval_batch_size="8" \
+ --adam_beta1="0.9" \
+ --adam_beta2="0.98" \
+ --adam_epsilon="1e-06" \
+ --gradient_checkpointing \
+```
+
+The results of this run can be seen [here](https://wandb.ai/patrickvonplaten/wav2vec2-pretrained-demo/reports/Wav2Vec2-PreTraining-Demo-Run--VmlldzoxMDk3MjAw?accessToken=oa05s1y57lizo2ocxy3k01g6db1u4pt8m6ur2n8nl4cb0ug02ms2cw313kb8ruch).
+
+### Base
+
+TODO (currently running...)
+
+
+### Large
+
+To pre-train `"large-sized"` Wav2Vec2 model, *e.g.* [facebook/wav2vec2-large-lv60](https://huggingface.co/facebook/wav2vec2-large-lv60), 
+on [librispeech_asr](https://huggingface.co/datasets/librispeech_asr), the following command can be run:
+
+```bash
+accelerate launch run_pretrain_no_trainer.py \ 
+ --dataset_name=librispeech_asr \
+ --dataset_config_names clean clean other \
+ --dataset_split_names train.100 train.360 train.500 \
+ --output_dir=./test \
+ --max_train_steps=200000 \
+ --num_warmup_steps=32000 \
+ --gradient_accumulation_steps=8 \
+ --learning_rate=0.001 \
+ --weight_decay=0.01 \
+ --max_duration_in_seconds=20.0 \
+ --min_duration_in_seconds=2.0 \
+ --model_name_or_path=./ 
+ --logging_steps=1 \
+ --saving_steps=10000 \
+ --per_device_train_batch_size=2 \
+ --per_device_eval_batch_size=4 \
+ --adam_beta1=0.9 \
+ --adam_beta2=0.98 \
+ --adam_epsilon=1e-06 \
+ --gradient_checkpointing \
+```
+
+The experiment was run on 8 GPU V100 (16 GB RAM each) for 7 days. 
+In case you have more than 8 GPUs available for a higher effective `batch_size`,
+it is recommended to increase the `learning_rate` to `0.005` for faster convergence.
+
+The results of this run can be seen [here](https://wandb.ai/patrickvonplaten/pretraining-wav2vec2/reports/Wav2Vec2-Large--VmlldzoxMTAwODM4?accessToken=wm3qzcnldrwsa31tkvf2pdmilw3f63d4twtffs86ou016xjbyilh55uoi3mo1qzc) and the checkpoint pretrained for 120,000 steps can be accessed [here](https://huggingface.co/patrickvonplaten/wav2vec2-large-repro-960h-libri-120k-steps)

examples/pytorch/speech-pretraining/requirements.txt

@@ -0,0 +1,4 @@
+datasets >= 1.12.0
+torch >= 1.5
+torchaudio
+accelerate >= 0.5.0