Abominable Workflows unleashes the full potential of PixArt-Sigma, enhancing its exceptional prompt following capabilities with the rich detail of SD15 models to generate stunning, unique visuals.

Setup Guide

> Required Files
> Required Nodes
> How to Automatically Install the Required Nodes
> Manually Installing Required Nodes on Linux
> Manually Installing Required Nodes on Windows

Required Files

To use the workflows, you need to have the following models installed in ComfyUI.
Place them in the corresponding directories as specified below.

• <YOUR_COMFYUI_DIR> / models / checkpoints :
  • pixart_sigma-FP16.safetensors (1.2GB)
  • photon_refiner-FP16.safetensors (2.1GB)
• <YOUR_COMFYUI_DIR> / models / clip :
  • t5_xxl_encoder-FP8.safetensors (4.9GB)
• <YOUR_COMFYUI_DIR> / models / vae :
  • pixart_vae.safetensors (0.1GB)

Required Nodes

[!IMPORTANT] Ensure that your ComfyUI is updated to the latest version.

Additionally, the workflows require the following custom nodes to be installed:

• ComfyUI_ExtraModels: provides support for PixArt-Sigma.
• ComfyUI-Crystools: used for some simple string operations.

How to Automatically Install the Required Nodes

The easiest way to install the required nodes is by using ComfyUI-Manager. This extension for ComfyUI offers management functions to install, remove, disable, and enable custom nodes. It simplifies the process and can save you a lot of trouble.

If for some reason you cannot use ComfyUI-Manager, follow the instructions below to install the nodes manually.

Manually Installing Required Nodes on Linux

To manually install the nodes, open a terminal and run the following commands:

cd <your_comfyui_dir>
git clone https://github.com/city96/ComfyUI_ExtraModels ./custom_nodes/ComfyUI_ExtraModels
git clone https://github.com/crystian/ComfyUI-Crystools ./custom_nodes/ComfyUI-Crystools

If ComfyUI is using a virtual environment, you must activate it before installing the dependencies:

# You might need to replace '.venv' with the directory
# where the virtual environment is located
source .venv/bin/activate

Then, install the dependencies required by the nodes:

python -m pip install -r ./custom_nodes/ComfyUI_ExtraModels/requirements.txt
python -m pip install -r ./custom_nodes/ComfyUI-Crystools/requirements.txt

Manually Installing Required Nodes on Windows

If you are using the standalone ComfyUI release on Windows, open a CMD in the "ComfyUI_windows_portable" folder (the one containing your run_nvidia_gpu.bat file).

From that directory, run the following commands to install the required nodes:

git clone https://github.com/city96/ComfyUI_ExtraModels ComfyUI/custom_nodes/ComfyUI_ExtraModels
git clone https://github.com/crystian/ComfyUI-Crystools ComfyUI/custom_nodes/ComfyUI-Crystools

Then, install the dependencies required by these nodes:

.\python_embeded\python.exe -s -m pip install -r .\ComfyUI\custom_nodes\ComfyUI_ExtraModels\requirements.txt
.\python_embeded\python.exe -s -m pip install -r .\ComfyUI\custom_nodes\ComfyUI-Crystools\requirements.txt

Acknowledgments

I would like to thank the developers of PixArt-Σ for their outstanding work. Their model has been a crucial component in the development of the Abominable Workflows.

Further Information about PixArt-Σ:

• PixArt-Σ GitHub Repository
• PixArt-Σ Hugging Face Model
• PixArt-Σ arXiv Report