# Installation
1. [Install from Pypi](#install-from-pypi)
2. [Install from Source](#install-from-source)
2.1. [Prerequisites](#prerequisites)
2.2. [Install Intel Extension for Transformers](#install-intel-extension-for-transformers)
3. [System Requirements](#system-requirements)
3.1. [Validated Hardware Environment](#validated-hardware-environment)
3.2. [Validated Software Environment](#validated-software-environment)
## Install from Pypi
Binary builds for python 3.8, 3.9 and 3.10 are available in Pypi
>**Note**: Recommend install protobuf <= 3.20.0 if use onnxruntime <= 1.11
```Bash
# install stable basic version from pypi
pip install intel-extension-for-transformers
```
```Bash
# install nightly version
pip install -i https://test.pypi.org/simple/ intel-extension-for-transformers
# or install nightly version with only backend
pip install -i https://test.pypi.org/simple/ intel-extension-for-transformers-backend
```
```Bash
# install stable basic version from from conda
conda install -c intel intel_extension_for_transformers
```
## Install from Source
### Prerequisites
The following prerequisites and requirements must be satisfied for a successful installation:
- Python version: 3.8 or 3.9 or 3.10
- GCC (on Linux) or Visual Studio (on Windows)
### Install Intel Extension for Transformers
```Bash
git clone https://github.com/intel/intel-extension-for-transformers.git itrex
cd itrex
pip install -r requirements.txt
# Install intel_extension_for_transformers
pip install -v .
```
## System Requirements
### Validated Hardware Environment
Intel® Extension for Transformers supports systems based on [Intel 64 architecture or compatible processors](https://en.wikipedia.org/wiki/X86-64) that are specifically optimized for the following CPUs:
* Intel Xeon Scalable processor (formerly Cascade Lake, Icelake)
* Future Intel Xeon Scalable processor (code name Sapphire Rapids)
### Validated Software Environment
* OS version: CentOS 8.4, Ubuntu 20.04
* Python version: 3.8, 3.9, 3.10