# Installation

Note currently `bitsandbytes` is only supported on CUDA GPU hardwares, support for AMD GPUs and M1 chips (MacOS) is coming soon.

<hfoptions id="OS system">
<hfoption id="Linux">

## Hardware requirements:
 - LLM.int8(): NVIDIA Turing (RTX 20xx; T4) or Ampere GPU (RTX 30xx; A4-A100); (a GPU from 2018 or newer).
 - 8-bit optimizers and quantization: NVIDIA Kepler GPU or newer (>=GTX 78X).

Supported CUDA versions: 10.2 - 12.0  #TODO: check currently supported versions

## Linux

### From Pypi

```bash
pip install bitsandbytes
```

### From source

You need CMake and Python installed. For Linux, make sure to install a compiler (`apt install build-essential`, for example).

```bash
git clone https://github.com/TimDettmers/bitsandbytes.git && cd bitsandbytes/
pip install -r requirements-dev.txt
cmake -DCOMPUTE_BACKEND=cuda -S .
make
pip install .
```
Note support for non-CUDA GPUs (e.g. AMD, Intel, Apple Silicon), is also coming soon.
For a more detailed compilation guide, head to the [dedicated page on the topic](./compiling)

</hfoption>
<hfoption id="Windows">

## Windows

Windows builds require Visual Studio with C++ support, as well as the Cuda SDK installed.

Currently for Windows users, you need to build bitsandbytes from source:

```bash
git clone https://github.com/TimDettmers/bitsandbytes.git && cd bitsandbytes/
pip install -r requirements-dev.txt
cmake -DCOMPUTE_BACKEND=cuda -S .
cmake --build . --config Release
python -m build --wheel
```

Big thanks to [wkpark](https://github.com/wkpark), [Jamezo97](https://github.com/Jamezo97), [rickardp](https://github.com/rickardp), [akx](https://github.com/akx) for their amazing contributions to make bitsandbytes compatible with Windows.

For a more detailed compilation guide, head to the [dedicated page on the topic](./compiling)

</hfoption>
<hfoption id="MacOS">

## MacOS

Mac support is still a work in progress. Please make sure to check out the [Apple Silicon implementation coordination issue](https://github.com/TimDettmers/bitsandbytes/issues/1020) to get notified about the discussions and progress with respect to MacOS integration.

</hfoption>

</hfoptions>