# FastSD CPU :sparkles:[](https://github.com/openvinotoolkit/awesome-openvino)
FastSD CPU is a faster version of Stable Diffusion on CPU. Based on [Latent Consistency Models](https://github.com/luosiallen/latent-consistency-model) and [Adversarial Diffusion Distillation](https://nolowiz.com/fast-stable-diffusion-on-cpu-using-fastsd-cpu-and-openvino/).  The following interfaces are available : - Desktop GUI, basic text to image generation (Qt,faster) - WebUI (Advanced features,Lora,controlnet etc) - CLI (CommandLine Interface) 🚀 Using __OpenVINO(SDXS-512-0.9)__, it took __0.82 seconds__ (__820 milliseconds__) to create a single 512x512 image on a __Core i7-12700__. ## Table of Contents - [Supported Platforms](#Supported platforms) - [Dependencies](#dependencies) - [Memory requirements](#memory-requirements) - [Features](#features) - [Benchmarks](#fast-inference-benchmarks) - [OpenVINO Support](#openvino) - [Installation](#installation) - [AI PC Support - OpenVINO](#ai-pc-support) - [GGUF support (Flux)](#gguf-support) - [Real-time text to image (EXPERIMENTAL)](#real-time-text-to-image) - [Models](#models) - [How to use Lora models](#useloramodels) - [How to use controlnet](#usecontrolnet) - [Android](#android) - [Raspberry Pi 4](#raspberry) - [Orange Pi 5](#orangepi) - [API Support](#apisupport) - [License](#license) - [Contributors](#contributors) ## Supported platforms⚡️ FastSD CPU works on the following platforms: - Windows - Linux - Mac - Android + Termux - Raspberry PI 4 ## Dependencies - Python 3.10 or Python 3.11 (Please ensure that you have a working Python 3.10 or Python 3.11 installation available on the system) ## Memory requirements Minimum system RAM requirement for FastSD CPU. Model (LCM,OpenVINO): SD Turbo, 1 step, 512 x 512 Model (LCM-LoRA): Dreamshaper v8, 3 step, 512 x 512 | Mode | Min RAM | | --------------------- | ------------- | | LCM | 2 GB | | LCM-LoRA | 4 GB | | OpenVINO | 11 GB | If we enable Tiny decoder(TAESD) we can save some memory(2GB approx) for example in OpenVINO mode memory usage will become 9GB. :exclamation: Please note that guidance scale >1 increases RAM usage and slow inference speed. ## Features - Desktop GUI, web UI and CLI - Supports 256,512,768,1024 image sizes - Supports Windows,Linux,Mac - 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](https://github.com/openvinotoolkit/openvino) support - Fixed OpenVINO image reproducibility issue - Fixed OpenVINO high RAM usage,thanks [deinferno](https://github.com/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](https://github.com/monstruosoft) for SD upscale - Works on Android + Termux + PRoot - Added interactive CLI,thanks [monstruosoft](https://github.com/monstruosoft) - Added basic lora support to CLI and WebUI - ONNX EDSR 2x upscale - Add SDXL-Lightning support - Add SDXL-Lightning OpenVINO support (int8) - Add multilora support,thanks [monstruosoft](https://github.com/monstruosoft) - Add basic ControlNet v1.1 support(LCM-LoRA mode),thanks [monstruosoft](https://github.com/monstruosoft) - Add ControlNet annotators(Canny,Depth,LineArt,MLSD,NormalBAE,Pose,SoftEdge,Shuffle) - Add SDXS-512 0.9 support - Add SDXS-512 0.9 OpenVINO,fast 1 step inference (0.8 seconds to generate 512x512 image) - Default model changed to SDXS-512-0.9 - Faster realtime image generation - Add NPU device check - Revert default model to SDTurbo - Update realtime UI - Add hypersd support - 1 step fast inference support for SDXL and SD1.5 - Experimental support for single file Safetensors SD 1.5 models(Civitai models), simply add local model path to configs/stable-diffusion-models.txt file. - Add REST API support - Add Aura SR (4x)/GigaGAN based upscaler support - Add Aura SR v2 upscaler support - Add FLUX.1 schnell OpenVINO int 4 support - Add CLIP skip support - Add token merging support - Add Intel AI PC support - AI PC NPU(Power efficient inference using OpenVINO) supports, text to image ,image to image and image variations support - Add [TAEF1 (Tiny autoencoder for FLUX.1) openvino](https://huggingface.co/rupeshs/taef1-openvino) support - Add Image to Image and Image Variations Qt GUI support,thanks [monstruosoft](https://github.com/monstruosoft) ## Fast Inference Benchmarks ### 🚀 Fast 1 step inference with Hyper-SD #### Stable diffuion 1.5 Works with LCM-LoRA mode. Fast 1 step inference supported on `runwayml/stable-diffusion-v1-5` model,select `rupeshs/hypersd-sd1-5-1-step-lora` lcm_lora model from the settings. #### Stable diffuion XL Works with LCM and LCM-OpenVINO mode. - *Hyper-SD SDXL 1 step* - [rupeshs/hyper-sd-sdxl-1-step](https://huggingface.co/rupeshs/hyper-sd-sdxl-1-step) - *Hyper-SD SDXL 1 step OpenVINO* - [rupeshs/hyper-sd-sdxl-1-step-openvino-int8](https://huggingface.co/rupeshs/hyper-sd-sdxl-1-step-openvino-int8) #### Inference Speed Tested on Core i7-12700 to generate __768x768__ image(1 step). | Diffusion Pipeline | Latency | | --------------------- | ------------- | | Pytorch | 19s | | OpenVINO | 13s | | OpenVINO + TAESDXL | 6.3s | ### Fastest 1 step inference (SDXS-512-0.9) :exclamation:This is an experimental model, only text to image workflow is supported. #### Inference Speed Tested on Core i7-12700 to generate __512x512__ image(1 step). __SDXS-512-0.9__ | Diffusion Pipeline | Latency | | --------------------- | ------------- | | Pytorch | 4.8s | | OpenVINO | 3.8s | | OpenVINO + TAESD | __0.82s__ | ### 🚀 Fast 1 step inference (SD/SDXL Turbo - Adversarial Diffusion Distillation,ADD) Added support for ultra fast 1 step inference using [sdxl-turbo](https://huggingface.co/stabilityai/sdxl-turbo) model :exclamation: These SD turbo models are intended for research purpose only. #### Inference Speed Tested on Core i7-12700 to generate __512x512__ image(1 step). __SD Turbo__ | Diffusion Pipeline | Latency | | --------------------- | ------------- | | Pytorch | 7.8s | | OpenVINO | 5s | | OpenVINO + TAESD | 1.7s | __SDXL Turbo__ | Diffusion Pipeline | Latency | | --------------------- | ------------- | | Pytorch | 10s | | OpenVINO | 5.6s | | OpenVINO + TAESDXL | 2.5s | ### 🚀 Fast 2 step inference (SDXL-Lightning - Adversarial Diffusion Distillation) 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). | Diffusion Pipeline | Latency | | --------------------- | ------------- | | Pytorch | 18s | | OpenVINO | 12s | | OpenVINO + TAESDXL | 10s | - *SDXL-Lightning* - [rupeshs/SDXL-Lightning-2steps](https://huggingface.co/rupeshs/SDXL-Lightning-2steps) - *SDXL-Lightning OpenVINO* - [rupeshs/SDXL-Lightning-2steps-openvino-int8](https://huggingface.co/rupeshs/SDXL-Lightning-2steps-openvino-int8) ### 2 Steps fast inference (LCM) FastSD CPU supports 2 to 3 steps fast inference using LCM-LoRA workflow. It works well with SD 1.5 models.  ### FLUX.1-schnell OpenVINO support  :exclamation: Important - Please note the following points with FLUX workflow - As of now only text to image generation mode is supported - Use OpenVINO mode - Use int4 model - *rupeshs/FLUX.1-schnell-openvino-int4* - 512x512 image generation needs around __30GB__ system RAM Tested on Intel Core i7-12700 to generate __512x512__ image(3 steps). | Diffusion Pipeline | Latency | | --------------------- | ------------- | | OpenVINO | 4 min 30sec | ### Benchmark scripts To benchmark run the following batch file on Windows: - `benchmark.bat` - To benchmark Pytorch - `benchmark-openvino.bat` - To benchmark OpenVINO Alternatively you can run benchmarks by passing `-b` command line argument in CLI mode. ## OpenVINO support Fast SD CPU utilizes [OpenVINO](https://www.intel.com/content/www/us/en/developer/tools/openvino-toolkit/overview.html) to speed up the inference speed. Thanks [deinferno](https://github.com/deinferno) for the OpenVINO model contribution. We can get 2x speed improvement when using OpenVINO. Thanks [Disty0](https://github.com/Disty0) for the conversion script. ### OpenVINO SDXL models These are models converted to use directly use it with FastSD CPU. These models are compressed to int8 to reduce the file size (10GB to 4.4 GB) using [NNCF](https://github.com/openvinotoolkit/nncf) - Hyper-SD SDXL 1 step - [rupeshs/hyper-sd-sdxl-1-step-openvino-int8](https://huggingface.co/rupeshs/hyper-sd-sdxl-1-step-openvino-int8) - SDXL Lightning 2 steps - [rupeshs/SDXL-Lightning-2steps-openvino-int8](https://huggingface.co/rupeshs/SDXL-Lightning-2steps-openvino-int8) ### OpenVINO SD Turbo models 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](https://huggingface.co/rupeshs/sd-turbo-openvino) - *SDXL Turbo OpenVINO int8* - [rupeshs/sdxl-turbo-openvino-int8](https://huggingface.co/rupeshs/sdxl-turbo-openvino-int8) - *TAESDXL OpenVINO* - [rupeshs/taesdxl-openvino](https://huggingface.co/rupeshs/taesdxl-openvino) You can directly use these models in FastSD CPU. ### Convert SD 1.5 models to OpenVINO LCM-LoRA fused models 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](https://github.com/rupeshs/lcm-openvino-converter), you can use this tools to convert any StableDiffusion 1.5 fine tuned models to OpenVINO. ## Intel AI PC support - OpenVINO (CPU, GPU, NPU) Fast SD now supports AI PC with Intel® Core™ Ultra Processors. [To learn more about AI PC and OpenVINO](https://nolowiz.com/ai-pc-and-openvino-quick-and-simple-guide/). ### GPU For GPU mode `set device=GPU` and run webui. FastSD GPU benchmark on AI PC as shown below.  ### NPU FastSD CPU now supports power efficient NPU (Neural Processing Unit) that comes with Intel Core Ultra processors. FastSD tested with following Intel processor's NPUs: - Intel Core Ultra Series 1 (Meteor Lake) - Intel Core Ultra Series 2 (Lunar Lake) Currently FastSD support this model for NPU [rupeshs/sd15-lcm-square-openvino-int8](https://huggingface.co/rupeshs/sd15-lcm-square-openvino-int8). Supports following modes on NPU : - Text to image - Image to image - Image variations To run model in NPU follow these steps (Please make sure that your AI PC's NPU driver is the latest): - Start webui - Select LCM-OpenVINO mode - Select the models settings tab and select OpenVINO model `rupeshs/sd15-lcm-square-openvino-int8` - Set device envionment variable `set DEVICE=NPU` - Now it will run on the NPU This is heterogeneous computing since text encoder and Unet will use NPU and VAE will use GPU for processing. Thanks to OpenVINO. Please note that tiny auto encoder will not work in NPU mode. *Thanks to Intel for providing AI PC dev kit and Tiber cloud access to test FastSD, special thanks to [Pooja Baraskar](https://github.com/Pooja-B),[Dmitriy Pastushenkov](https://github.com/DimaPastushenkov).* ## GGUF support - Flux [GGUF](https://github.com/ggerganov/ggml/blob/master/docs/gguf.md) Flux model supported via [stablediffusion.cpp](https://github.com/leejet/stable-diffusion.cpp) shared library. Currently Flux Schenell model supported. To use GGUF model use web UI and select GGUF mode. Tested on Windows and Linux. :exclamation: Main advantage here we reduced minimum system RAM required for Flux workflow to around __12 GB__. Supported mode - Text to image ### How to run Flux GGUF model - Download stablediffusion.cpp prebuilt shared library and place it inside fastsdcpu folder For Windows users, download [stable-diffusion.dll](https://huggingface.co/rupeshs/FastSD-Flux-GGUF/blob/main/stable-diffusion.dll) For Linux users download [libstable-diffusion.so](https://huggingface.co/rupeshs/FastSD-Flux-GGUF/blob/main/libstable-diffusion.so) You can also build the library manully by following the guide *"Build stablediffusion.cpp shared library for GGUF flux model support"* - Download __diffusion model__ from [flux1-schnell-q4_0.gguf](https://huggingface.co/rupeshs/FastSD-Flux-GGUF/blob/main/flux1-schnell-q4_0.gguf) and place it inside `models/gguf/diffusion` directory - Download __clip model__ from [clip_l_q4_0.gguf](https://huggingface.co/rupeshs/FastSD-Flux-GGUF/blob/main/clip_l_q4_0.gguf) and place it inside `models/gguf/clip` directory - Download __T5-XXL model__ from [t5xxl_q4_0.gguf](https://huggingface.co/rupeshs/FastSD-Flux-GGUF/blob/main/t5xxl_q4_0.gguf) and place it inside `models/gguf/t5xxl` directory - Download __VAE model__ from [ae.safetensors](https://huggingface.co/black-forest-labs/FLUX.1-schnell/blob/main/ae.safetensors) and place it inside `models/gguf/vae` directory - Start web UI and select GGUF mode - Select the models settings tab and select GGUF diffusion,clip_l,t5xxl and VAE models. - Enter your prompt and generate image ### Build stablediffusion.cpp shared library for GGUF flux model support(Optional) To build the stablediffusion.cpp library follow these steps - `git clone https://github.com/leejet/stable-diffusion.cpp` - `cd stable-diffusion.cpp` - `git pull origin master` - `git submodule init` - `git submodule update` - `git checkout 14206fd48832ab600d9db75f15acb5062ae2c296` - `cmake . -DSD_BUILD_SHARED_LIBS=ON` - `cmake --build . --config Release` - Copy the stablediffusion dll/so file to fastsdcpu folder ## Real-time text to image (EXPERIMENTAL) We can generate 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 browser (Resolution : 512x512,Latency : 0.82s on Intel Core i7) Watch YouTube video : [](https://www.youtube.com/watch?v=0XMiLc_vsyI) ## Models To use single file [Safetensors](https://huggingface.co/docs/safetensors/en/index) SD 1.5 models(Civit AI) follow this [YouTube tutorial](https://www.youtube.com/watch?v=zZTfUZnXJVk). Use LCM-LoRA Mode for single file safetensors. Fast SD supports LCM models and LCM-LoRA models. ### LCM Models These models can be configured in `configs/lcm-models.txt` file. ### OpenVINO models These are LCM-LoRA baked in models. These models can be configured in `configs/openvino-lcm-models.txt` file ### LCM-LoRA models These models can be configured in `configs/lcm-lora-models.txt` file. - *lcm-lora-sdv1-5* - distilled consistency adapter for [runwayml/stable-diffusion-v1-5](https://huggingface.co/runwayml/stable-diffusion-v1-5) - *lcm-lora-sdxl* - Distilled consistency adapter for [stable-diffusion-xl-base-1.0](https://huggingface.co/stabilityai/stable-diffusion-xl-base-1.0) - *lcm-lora-ssd-1b* - Distilled consistency adapter for [segmind/SSD-1B](https://huggingface.co/segmind/SSD-1B) These models are used with Stablediffusion base models `configs/stable-diffusion-models.txt`. :exclamation: Currently no support for OpenVINO LCM-LoRA models. ### How to add new 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 : ```Lykon/dreamshaper-8 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. ### How to use LCM-LoRA models offline 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! ## How to use Lora models Place your lora models in "lora_models" folder. Use LCM or LCM-Lora mode. You can download lora model (.safetensors/Safetensor) from [Civitai](https://civitai.com/) or [Hugging Face](https://huggingface.co/) E.g: [cutecartoonredmond](https://civitai.com/models/207984/cutecartoonredmond-15v-cute-cartoon-lora-for-liberteredmond-sd-15?modelVersionId=234192) ## ControlNet support We can use ControlNet in LCM-LoRA mode. Download ControlNet models from [ControlNet-v1-1](https://huggingface.co/comfyanonymous/ControlNet-v1-1_fp16_safetensors/tree/main).Download and place controlnet models in "controlnet_models" folder. Use the medium size models (723 MB)(For example :