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stevhliu committed May 16, 2024
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Expand Up @@ -37,17 +37,19 @@ Check out this [section](https://hf.co/docs/peft/main/en/accelerate/fsdp#use-pef

## Training

> [!TIP]
> FSDP is a distributed training framework that needs to be launched as a distributed training job with a library like [Accelerate](https://hf.co/docs/accelerate/index) or [torchrun](https://pytorch.org/docs/stable/elastic/run.html). The launch command provided in this section uses Accelerate to launch the training script.
bitsandbytes is deeply integrated with the Hugging Face ecosystem, making it easy to use with libraries like [Transformers](https://hf.co/docs/transformers), [PEFT](https://hf.co/docs/peft), and [TRL](https://hf.co/docs/trl).

PEFT provides a configuration file ([fsdp_config_qlora.yaml](https://github.com/huggingface/peft/blob/main/examples/sft/configs/fsdp_config_qlora.yaml)), launch command ([run_peft_qlora_fsdp.sh](https://github.com/huggingface/peft/blob/main/examples/sft/run_peft_qlora_fsdp.sh)), and training script ([train.py](https://github.com/huggingface/peft/blob/main/examples/sft/train.py)) for running FSDP-QLoRA. To learn more, check out the [Use PEFT QLoRA and FSDP for finetuning large models on multiple GPUs](https://huggingface.co/docs/peft/main/en/accelerate/fsdp#use-peft-qlora-and-fsdp-for-finetuning-large-models-on-multiple-gpus) documentation. This section briefly covers the steps to run FSDP-QLoRA training.

Before you begin, make sure you have the latest libraries installed.

```bash
pip install -U bitsandbytes accelerate transformers peft trl
```

> [!TIP]
> PEFT provides a configuration file ([fsdp_config_qlora.yaml](https://github.com/huggingface/peft/blob/main/examples/sft/configs/fsdp_config_qlora.yaml)), launch command ([run_peft_qlora_fsdp.sh](https://github.com/huggingface/peft/blob/main/examples/sft/run_peft_qlora_fsdp.sh)), and training script ([train.py](https://github.com/huggingface/peft/blob/main/examples/sft/train.py)) for FSDP-QLoRA. To learn more, check out the [Use PEFT QLoRA and FSDP for finetuning large models on multiple GPUs](https://huggingface.co/docs/peft/main/en/accelerate/fsdp#use-peft-qlora-and-fsdp-for-finetuning-large-models-on-multiple-gpus) documentation.
The important change that enables FSDP-QLoRA training is the `bnb_4bit_quant_storage` parameter in the [`~transformers.BitsAndBytesConfig`] class. This allows you to set the storage data type of the quantized weights to a float data type.

```py
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