ComfyUI Setup¶

The following describes how to setup "https://www.comfy.org/":ComfyUI on Ubuntu 24.04. Note that a modern GPU is required.

Install ComfyUI¶

ComfyUI will be installed into a Python virtual environment which keeps it somewhat isolated from the rest of the system.

1. Install virtualenv if it is not already installed:
   

   $ sudo apt  install python3.12-venv
   

2. Create virtualenv at /opt/comfyui and then update pip:
   

   $ sudo python3 -m venv /opt/comfyui/
   $ sudo /opt/comfyui/bin/pip install --upgrade pip
   

3. Install pytorch into the virtualenv (NOTE: this assumes an NVidia GPU and the appropriate drivers must already be installed):
   

   $ sudo /opt/comfyui/bin/pip install torch torchvision torchaudio --extra-index-url https://download.pytorch.org/whl/cu121
   

4. Install ComfyUI within the virtualenv:
   

   $ cd /opt/comfyui
   $ sudo mkdir comfyui
   $ sudo chown -R dsorber:dsorber comfyui/
   $ cd comfyui/
   $ git clone https://github.com/comfyanonymous/ComfyUI.git .
   $ sudo /opt/comfyui/bin/pip install -r requirements.txt 
   

5. Download and install Flux model
   • https://huggingface.co/Comfy-Org/flux1-schnell/blob/main/flux1-schnell-fp8.safetensors
6. Copy model to models/checkpoints directory:
   

   mv ~/Downloads/flux1-dev-fp8.safetensors /opt/comfyui/comfyui/models/checkpoints
   

7. Base ComfyUI and Flux model is now installed. To run:
   

   $ cd /opt/comfyui/comfyui
   $ ../bin/python3 main.py 
   

Resources¶

• https://comfyui-wiki.com/install/install-comfyui/install-comfyui-on-linux
• https://comfyui-wiki.com/tutorial/advanced/flux1-comfyui-guide-workflow-and-examples