The 'llama-recipes' repository is a companion to the Llama 2 model. The goal of this repository is to provide a scalable library for fine-tuning Llama 2, along with some example scripts and notebooks to quickly get started with using the Llama 2 models in a variety of use-cases, including fine-tuning for domain adaptation and building LLM-based applications with Llama 2 and other tools in the LLM ecosystem. The examples here showcase how to run Llama 2 locally, in the cloud, and on-prem.
Note
The llama-recipes repository was recently refactored to promote a better developer experience of using the examples. Some files have been moved to new locations. The src/ folder has NOT been modified, so the functionality of this repo and package is not impacted.
Make sure you update your local clone by running git pull origin main
These instructions will get you a copy of the project up and running on your local machine for development and testing purposes. See deployment for notes on how to deploy the project on a live system.
Some features (especially fine-tuning with FSDP + PEFT) currently require PyTorch nightlies to be installed. Please make sure to install the nightlies if you're using these features following this guide.
Llama-recipes provides a pip distribution for easy install and usage in other projects. Alternatively, it can be installed from source.
pip install --extra-index-url https://download.pytorch.org/whl/test/cu118 llama-recipes
Llama-recipes offers the installation of optional packages. There are three optional dependency groups. To run the unit tests we can install the required dependencies with:
pip install --extra-index-url https://download.pytorch.org/whl/test/cu118 llama-recipes[tests]
For the vLLM example we need additional requirements that can be installed with:
pip install --extra-index-url https://download.pytorch.org/whl/test/cu118 llama-recipes[vllm]
To use the sensitive topics safety checker install with:
pip install --extra-index-url https://download.pytorch.org/whl/test/cu118 llama-recipes[auditnlg]
Optional dependencies can also be combines with [option1,option2].
To install from source e.g. for development use these commands. We're using hatchling as our build backend which requires an up-to-date pip as well as setuptools package.
git clone git@github.com:meta-llama/llama-recipes.git
cd llama-recipes
pip install -U pip setuptools
pip install --extra-index-url https://download.pytorch.org/whl/test/cu118 -e .
For development and contributing to llama-recipes please install all optional dependencies:
git clone git@github.com:meta-llama/llama-recipes.git
cd llama-recipes
pip install -U pip setuptools
pip install --extra-index-url https://download.pytorch.org/whl/test/cu118 -e .[tests,auditnlg,vllm]
You can find Llama 2 models on Hugging Face hub here, where models with hf in the name are already converted to Hugging Face checkpoints so no further conversion is needed. The conversion step below is only for original model weights from Meta that are hosted on Hugging Face model hub as well.
The recipes and notebooks in this folder are using the Llama 2 model definition provided by Hugging Face's transformers library.
Given that the original checkpoint resides under models/7B you can install all requirements and convert the checkpoint with:
## Install Hugging Face Transformers from source
pip freeze | grep transformers ## verify it is version 4.31.0 or higher
git clone git@github.com:huggingface/transformers.git
cd transformers
pip install protobuf
python src/transformers/models/llama/convert_llama_weights_to_hf.py \
--input_dir /path/to/downloaded/llama/weights --model_size 7B --output_dir /output/pathMost of the code dealing with Llama usage is organized across 2 main folders: recipes/ and src/.
Contains examples are organized in folders by topic:
| Subfolder | Description |
|---|---|
| quickstart | The "Hello World" of using Llama2, start here if you are new to using Llama2. |
| finetuning | Scripts to finetune Llama2 on single-GPU and multi-GPU setups |
| inference | Scripts to deploy Llama2 for inference locally and using model servers |
| use_cases | Scripts showing common applications of Llama2 |
| responsible_ai | Scripts to use PurpleLlama for safeguarding model outputs |
| llama_api_providers | Scripts to run inference on Llama via hosted endpoints |
| benchmarks | Scripts to benchmark Llama 2 models inference on various backends |
| code_llama | Scripts to run inference with the Code Llama models |
| evaluation | Scripts to evaluate fine-tuned Llama2 models using lm-evaluation-harness from EleutherAI |
Contains modules which support the example recipes:
| Subfolder | Description |
|---|---|
| configs | Contains the configuration files for PEFT methods, FSDP, Datasets, Weights & Biases experiment tracking. |
| datasets | Contains individual scripts for each dataset to download and process. Note |
| inference | Includes modules for inference for the fine-tuned models. |
| model_checkpointing | Contains FSDP checkpoint handlers. |
| policies | Contains FSDP scripts to provide different policies, such as mixed precision, transformer wrapping policy and activation checkpointing along with any precision optimizer (used for running FSDP with pure bf16 mode). |
| utils | Utility files for: - train_utils.py provides training/eval loop and more train utils.- dataset_utils.py to get preprocessed datasets.- config_utils.py to override the configs received from CLI.- fsdp_utils.py provides FSDP wrapping policy for PEFT methods.- memory_utils.py context manager to track different memory stats in train loop. |
Please read CONTRIBUTING.md for details on our code of conduct, and the process for submitting pull requests to us.