# PyTorch ao – Axolotl

# PyTorch ao

Custom data types and layouts for training and inference

To use experimental optimizers (`AdamWFp8`, `AdamW4bit`, `AdamW8bit`) from Pytorch Ao, please install the package as shown below.

Tip

Some experimental optimizers are already present in regular Pytorch, so please re-check if you actually need this package!

### Installation

Stable Release from the PyTorch index

    pip install torchao --extra-index-url https://download.pytorch.org/whl/cu121 # full options are cpu/cu118/cu121/cu124

Nightly release

    pip install --pre torchao-nightly --index-url https://download.pytorch.org/whl/nightly/cu121 # full options are cpu/cu118/cu121/cu124