A simple prompt generator for ComfyUI utilizing ExLlama.
Outputs are printed in the console, sadly I have no idea how to append them to metadata or display in the UI.
Suggestions welcome.

Installation

Clone the repository to custom_nodes in your ComfyUI directory:

git clone https://github.com/Zuellni/ComfyUI-ExLlama-Nodes

Install the requirements:

pip install -r requirements.txt

Install the latest pre-built ExLlama wheel from https://github.com/jllllll/exllama/releases.
Choose the version matching your platform, Python, and PyTorch CUDA/ROCm.

Example for Windows with Python 3.10 and CUDA 11.7:

pip install https://github.com/jllllll/exllama/releases/download/0.0.17/exllama-0.0.17+cu117-cp310-cp310-win_amd64.whl

Nodes

Comes with the following nodes:

ExLlama Loader

Used to load 4-bit GPTQ Llama/2 models. You can find a lot of them over at Hugging Face.
ExLlama allocates memory according to max_seq_len. Lowering it is a good way to save on GPU RAM.
It's currently not possible to offload the model to CPU RAM.

ExLlama Generator

Generates a string based on the given prompt for use with other nodes.
Default values correspond to the simple-1 preset from text-generation-webui.
ExLlama isn't deterministic, so the outputs may differ even with the same seed.

Example

The workflow Can be loaded directly in ComfyUI.