stable-diffusion.cpp/docs/chroma.md

How to Use

You can run Chroma using stable-diffusion.cpp with a GPU that has 6GB or even 4GB of VRAM, without needing to offload to RAM.

Download weights

• Download Chroma
  • If you don't want to do the conversion yourself, download the preconverted gguf model from silveroxides/Chroma-GGUF
  • Otherwise, download chroma's safetensors from lodestones/Chroma
• Download vae from https://huggingface.co/black-forest-labs/FLUX.1-dev/blob/main/ae.safetensors
• Download t5xxl from https://huggingface.co/comfyanonymous/flux_text_encoders/blob/main/t5xxl_fp16.safetensors

Convert Chroma weights

You can download the preconverted gguf weights from silveroxides/Chroma-GGUF, this way you don't have to do the conversion yourself.

.\bin\Release\sd.exe -M convert -m ..\..\ComfyUI\models\unet\chroma-unlocked-v40.safetensors -o ..\models\chroma-unlocked-v40-q8_0.gguf -v --type q8_0

Run

Example

For example:

 .\bin\Release\sd.exe -diffusion-model  ..\models\chroma-unlocked-v40-q8_0.gguf --vae ..\models\ae.sft --t5xxl ..\models\t5xxl_fp16.safetensors  -p "a lovely cat holding a sign says 'chroma.cpp'" --cfg-scale 4.0 --sampling-method euler -v --chroma-disable-dit-mask