---
library_name: diffusers
license: other
license_name: flux-1-dev-non-commercial-license
license_link: https://huggingface.co/black-forest-labs/FLUX.1-dev/blob/main/LICENSE.md
---

# How to cast fp8
1. Install quanto-optinum.
```bash
pip install optimum-quanto
```
2. Run the script:
```python
import torch
from safetensors.torch import save_file

from diffusers import FluxTransformer2DModel, FluxPipeline
from optimum.quanto import freeze, qfloat8, quantize

transformer = FluxTransformer2DModel.from_single_file("modern-anime.safetensors", torch_dtype=torch.bfloat16)
quantize(transformer, weights=qfloat8)
freeze(transformer)

transformer.save_pretrained("transformer")
```