FastSD CPU is a faster version of Stable Diffusion on CPU. Based on Latent Consistency Models and Adversarial Diffusion Distillation.

The following interfaces are available :

• Desktop GUI (Qt,faster)
• WebUI
• CLI (CommandLine Interface)

🚀 Using OpenVINO(SD Turbo), it took 1.7 seconds to create a single 512x512 image on a Core i7-12700.

• Windows
• Linux
• Mac
• Android + Termux
• Raspberry PI 4

Added support for ultra fast 1 step inference using sdxl-turbo model

❗ These SD turbo models are intended for research purpose only.

Tested on Core i7-12700 to generate 512x512 image(1 step).

SD Turbo

SDXL Turbo

SDXL-Lightning works with LCM and LCM-OpenVINO mode.You can select these models from app settings.

Tested on Core i7-12700 to generate 768x768 image(2 steps).

• SDXL-Lightning - rupeshs/SDXL-Lightning-2steps

• SDXL-Lightning OpenVINO - rupeshs/SDXL-Lightning-2steps-openvino-int8

Minimum system RAM requirment for FastSD CPU.

Model (LCM,OpenVINO): SD Turbo, 1 step, 512 x 512

Model (LCM-LoRA): Dreamshaper v8, 3 step, 512 x 512

If we enable Tiny decoder(TAESD) we can save some memory(2GB approx) for example in OpenVINO mode memory usage will become 9GB.

❗ Please note that guidance scale >1 increases RAM usage and slow inference speed.

• Supports 256,512,768 image sizes
• Supports Windows and Linux
• Saves images and diffusion setting used to generate the image
• Settings to control,steps,guidance and seed
• Added safety checker setting
• Maximum inference steps increased to 25
• Added OpenVINO support
• Added web UI
• Added CommandLine Interface(CLI)
• Fixed OpenVINO image reproducibility issue
• Fixed OpenVINO high RAM usage,thanks deinferno
• Added multiple image generation support
• Application settings
• Added Tiny Auto Encoder for SD (TAESD) support, 1.4x speed boost (Fast,moderate quality)
• Safety checker disabled by default
• Added SDXL,SSD1B - 1B LCM models
• Added LCM-LoRA support, works well for fine-tuned Stable Diffusion model 1.5 or SDXL models
• Added negative prompt support in LCM-LoRA mode
• LCM-LoRA models can be configured using text configuration file
• Added support for custom models for OpenVINO (LCM-LoRA baked)
• OpenVINO models now supports negative prompt (Set guidance >1.0)
• Real-time inference support,generates images while you type (experimental)
• Fast 2,3 steps inference
• Lcm-Lora fused models for faster inference
• Supports integrated GPU(iGPU) using OpenVINO (export DEVICE=GPU)
• 5.7x speed using OpenVINO(steps: 2,tiny autoencoder)
• Image to Image support (Use Web UI)
• OpenVINO image to image support
• Fast 1 step inference (SDXL Turbo)
• Added SD Turbo support
• Added image to image support for Turbo models (Pytorch and OpenVINO)
• Added image variations support
• Added 2x upscaler (EDSR and Tiled SD upscale (experimental)),thanks monstruosoft for SD upscale
• Works on Android + Termux + PRoot
• Added interactive CLI,thanks monstruosoft
• Added basic lora support to CLI and WebUI
• ONNX EDSR 2x upscale
• Add SDXL-Lightning support
• Add SDXL-Lightning OpenVINO support (int8)

FastSD CPU supports 2 to 3 steps fast inference using LCM-LoRA workflow. It works well with SD 1.5 models.

Thanks deinferno for the OpenVINO model contribution. We can get 2x speed improvement when using OpenVINO. Thanks Disty0 for the conversion script.

We have converted SD/SDXL Turbo models to OpenVINO for fast inference on CPU. These models are intended for research purpose only. Also we converted TAESDXL MODEL to OpenVINO and

• SD Turbo OpenVINO - rupeshs/sd-turbo-openvino
• SDXL Turbo OpenVINO int8 - rupeshs/sdxl-turbo-openvino-int8
• TAESDXL OpenVINO - rupeshs/taesdxl-openvino

You can directly use these models in FastSD CPU.

We first creates LCM-LoRA baked in model,replaces the scheduler with LCM and then converts it into OpenVINO model. For more details check LCM OpenVINO Converter, you can use this tools to convert any StableDiffusion 1.5 fine tuned models to OpenVINO.

Now we can generate near real-time text to images using FastSD CPU.

CPU (OpenVINO)

Near real-time inference on CPU using OpenVINO, run the start-realtime.bat batch file and open the link in brower (Resolution : 256x256,Latency : 2.3s on Intel Core i7)

Colab (GPU)

You can use the colab to generate real-time images (Resolution : 512x512,Latency : 500ms on Tesla T4)

Watch YouTube video :

Fast SD supports LCM models and LCM-LoRA models.

Following LCM models are supported:

• LCM_Dreamshaper_v7 - https://huggingface.co/SimianLuo/LCM_Dreamshaper_v7 by Simian Luo
• SSD-1B -LCM distilled version of segmind/SSD-1B
• StableDiffusion XL -LCM distilled version of stable-diffusion-xl-base-1.0

These are LCM-LoRA baked in models.

• LCM-dreamshaper-v7-openvino by Rupesh
• LCM_SoteMix by Disty0

• lcm-lora-sdv1-5 - distilled consistency adapter for runwayml/stable-diffusion-v1-5
• lcm-lora-sdxl - Distilled consistency adapter for stable-diffusion-xl-base-1.0
• lcm-lora-ssd-1b - Distilled consistency adapter for segmind/SSD-1B

❗ Currently no support for OpenVINO LCM-LoRA models.

To add new model follow the steps: For example we will add wavymulder/collage-diffusion, you can give Stable diffusion 1.5 Or SDXL,SSD-1B fine tuned models.

1. Open configs/stable-diffusion-models.txt file in text editor.
2. Add the model ID wavymulder/collage-diffusion or locally cloned path.

Updated file as shown below :

Fictiverse/Stable_Diffusion_PaperCut_Model
stabilityai/stable-diffusion-xl-base-1.0
runwayml/stable-diffusion-v1-5
segmind/SSD-1B
stablediffusionapi/anything-v5
wavymulder/collage-diffusion

Similarly we can update configs/lcm-lora-models.txt file with lcm-lora ID.

Please follow the steps to run LCM-LoRA models offline :

• In the settings ensure that "Use locally cached model" setting is ticked.
• Download the model for example latent-consistency/lcm-lora-sdv1-5 Run the following commands:

git lfs install
git clone https://huggingface.co/latent-consistency/lcm-lora-sdv1-5

Copy the cloned model folder path for example "D:\demo\lcm-lora-sdv1-5" and update the configs/lcm-lora-models.txt file as shown below :

D:\demo\lcm-lora-sdv1-5
latent-consistency/lcm-lora-sdxl
latent-consistency/lcm-lora-ssd-1b

• Open the app and select the newly added local folder in the combo box menu.
• That's all!

Place your lora models in "lora_models" folder. Use LCM or LCM-Lora mode. You can download lora model (.safetensors/Safetensor) from Civitai or Hugging Face E.g: cutecartoonredmond

❗You must have a working Python installation.(Recommended : Python 3.10 or 3.11 )

Clone/download this repo or download release.

• Double click install.bat (It will take some time to install,depending on your internet speed.)

You can run in desktop GUI mode or web UI mode.

• To start desktop GUI double click start.bat

• To start web UI double click start-webui.bat

Ensure that you have Python 3.9 or 3.10 or 3.11 version installed.

• Clone/download this repo

• In the terminal, enter into fastsdcpu directory

• Run the following command

  chmod +x install.sh

  ./install.sh

./start.sh

./start-webui.sh

Ensure that you have Python 3.9 or 3.10 or 3.11 version installed.

• Clone/download this repo

• In the terminal, enter into fastsdcpu directory

• Run the following command

  chmod +x install-mac.sh

  ./install-mac.sh

./start.sh

./start-webui.sh

Thanks Autantpourmoi for Mac testing.

❗We don't support OpenVINO on Mac.

If you want to increase image generation speed on Mac(M1/M2 chip) try this:

export DEVICE=mps and start app start.sh

Due to the limitation of using CPU/OpenVINO inside colab, we are using GPU with colab.

Open the terminal and enter into fastsdcpu folder. Activate virtual environment using the command:

(Suppose FastSD CPU available in the directory "D:\fastsdcpu") D:\fastsdcpu\env\Scripts\activate.bat

source env/bin/activate

Start CLI src/app.py -h

FastSD CPU running on Google Pixel 7 Pro.

First you have to install Termux and install PRoot. Then install and login to Ubuntu in PRoot.

Run the following command to install without Qt GUI.

proot-distro login ubuntu

./install.sh --disable-gui

After the installation you can use WebUi.

./start-webui.sh

Note : If you get libgl.so.1 import error run apt-get install ffmpeg.

Thanks patienx for this guide Step by step guide to installing FASTSDCPU on ANDROID

Thanks WGNW_MGM for Raspberry PI 4 testing.FastSD CPU worked without problems. System configuration - Raspberry Pi 4 with 4GB RAM, 8GB of SWAP memory.

• TAESD will not work with OpenVINO image to image workflow

The fastsdcpu project is available as open source under the terms of the MIT license

Users are granted the freedom to create images using this tool, but they are obligated to comply with local laws and utilize it responsibly. The developers will not assume any responsibility for potential misuse by users.