---
license: openrail
language:
- en
tags:
- art
- comfyui
- text-to-image
- PixArt-Σ
---

![Abominable Workflows Grid](./demo_images/abominable_grid.jpg)

**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-files) <br/>
\> [Required Nodes](#required-nodes) <br/>
\> [How to Automatically Install the Required Nodes](#how-to-automatically-install-the-required-nodes) <br/>
\> [Manually Installing Required Nodes on Linux](#manually-installing-required-nodes-on-linux) <br/>
\> [Manually Installing Required Nodes on Windows](#manually-installing-required-nodes-on-windows) <br/>


## Required Files

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

 * \<YOUR_COMFYUI_DIR\> __/ models / checkpoints :__
    * [pixart_sigma-FP16.safetensors](https://huggingface.co/martin-rizzo/AbominableWorkflows/tree/main) (1.2GB)
    * [photon_refiner-FP16.safetensors](https://huggingface.co/martin-rizzo/AbominableWorkflows/tree/main) (2.1GB)
 * \<YOUR_COMFYUI_DIR\> __/ models / clip :__
    * [t5_xxl_encoder-FP8.safetensors](https://huggingface.co/martin-rizzo/AbominableWorkflows/tree/main) (4.9GB)
 * \<YOUR_COMFYUI_DIR\> __/ models / vae :__
    * [pixart_vae.safetensors](https://huggingface.co/martin-rizzo/AbominableWorkflows/tree/main) (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__](
   https://github.com/city96/ComfyUI_ExtraModels): provides support for PixArt-Sigma.
 * [__ComfyUI-Crystools__](
   https://github.com/crystian/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](https://github.com/ltdrdata/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](https://github.com/PixArt-alpha/PixArt-sigma)
  * [PixArt-Σ Hugging Face Model](https://huggingface.co/PixArt-alpha/PixArt-Sigma-XL-2-1024-MS)
  * [PixArt-Σ arXiv Report](https://arxiv.org/abs/2403.04692)