Comfyui xformers not available.

• Comfyui xformers not available dir_repos commit_hash = launch_utils. How to Update ComfyUI xformers. 17. Thus when I run stable diffusion models, xformers is not found. This automatically enables xformers. 0 + xFormers 0. ) Mar 27, 2023 · If you see "Using xformers cross attention" in the ComfyUI console that means xformers is being used. 6) I tried upgrading Torch for Comfy and it crashed comfy completely. Install XFormers: If not present, activate your ComfyUI environment and install XFormers with `conda install xformers`. Help? Discussion of science, technology, engineering, philosophy, history, politics, music, art, etc. If you’re using ComfyUI and need to update the xformers package to ensure you have the latest features and improvements, follow these steps: Step 1: Locate the xformers folder. 16 of xFormers, released on January 2023, installation can be easily performed using pre-built pip wheels: Mar 29, 2023 · @zhangjiewu Hello, what is your xformers version. git index_url = launch_utils. and, a few lines later, Using xformers cross attention 安装好 xformers 后，默认在 ComfyUI 中启用，如果不想使用，需要在启动程序 run_nvidia_gpu. 0 torchvision==0. ini not system ffmpeg binaries if available. (backup images and checkpoints and such if you have any, that why I rename the folder and not delete it. Sep 19, 2023 · or triton, there are ways to install it but I never found it necessary, the warning is just there. Recommended for those who are migrating from existing installation and for those who are familiar with commands and terminals RuntimeError: No such operator xformers::efficient_attention_forward_cutlass - did you forget to build xformers with python setup. 29. Python 3. txt' command. This way, your Pytorch will be upgraded to the current stable version 2. 确保你的Python版本与xformers库的要求相匹配。有些库可能只支持特定版本的Python。你可以查阅xformers的文档或者在其官方仓库中查找关于支持的Python版本的信息。 7. 3. Note that the venv folder might be called something else depending on the SD UI. Falling back to native attention. According to this issue , xFormers v0. For confirmation that WebUI is using the Xformers or not, as usual click on webui. Reload to refresh your session. When the flow reaches the Stable Video Diffusion Sampler node, execution ceases. Jul 19, 2023 · 文章浏览阅读3. 8 -c pytorch -c nvidia but it only shows errors about some conflicts "ClobberError: This transaction has Mar 26, 2023 · And then you can use that terminal to run Comfyui without installing any dependencies. 2. is_installed repo_dir = launch Dec 29, 2022 · xformersのDLに失敗して破損しているのかもしれない。この場合--reinstall-xformers --xformersで解決できる可能性がある。 あるいは、ここのClashSAN氏のコメント にあるように、xformersに最適化されていない環境や、NvidiaのGPUではないのかもしれないけど…。グラボは Sep 10, 2024 · How do I completely uninstall all remnants of ComfyUI, and reinstall it with xFormers (that work with it) and then prevent ComfyUI, PyTorch, CUDA, xFormers, or anything else from updating or changing at all? Whatever happened with the whole PyTorch 2. No idea why, I tried uninstalling reinstalling xformers and moondream as well but no luck. The basics on installation with potential pitfalls. Just install xformers through pip. FYI, you are running with PyTorch version 2. 但是，是的，xformers 安装起来经常有问题，可能不值得这么麻烦。 I am also worried that after this is fixed, other plug-ins will conflict or report errors, which will be a big failure for me. Aug 1, 2023 · On my machine, today, with fully up-to-date everything (pytorch 2. 25. 6w次，点赞20次，收藏31次。在使用pip install xformers安装xformers时，发现总是会把我环境中的pytorch重新安装，并且会安装CUDA12版本的pytorch, 而我环境是CUDA 11. bat 中添加命令：--disable-xformers，与在 SD WebUI 中的使用方式不同。 多说一句，可能并不是所有的 AI 软件都适合自行安装 xformers，我在 WebUI Forge 中安装后导致软件无法启动，不 Mar 9, 2025 · 文章浏览阅读1. Sadly -- no-half-vae does not fix it. I tried several times and failed. First, locate the folder where ComfyUI’s xformers package is installed. It looks like this from modules import launch_utils args = launch_utils. 如果torch版本低，需要找到对应的低版本xformers Xformers has been removed. info` for more info `tritonflashattF` is not supported because: xFormers wasn't build with CUDA support Operator wasn't built - see `python -m xformers. ComfyUI_stable_fast 为 ComfyUI 的一个插件，可以提高图像生成速度，但它不适用于显存较少的显卡 Yes, you can check if it's on or not by reading the terminal output when you launch Comfy. Dec 18, 2024 · You signed in with another tab or window. "_ I have located activate. After installing, and following all the instructions, im getting: xFormers not available xFormers not available and ComfyUI doesnt start, any idea? Sep 2, 2024 · 本文解决使用 comfyui 时出现“no module 'xformers”错误的问题。发生该错误是因为 comfyui 需要“xformers”模块，但该模块可能未安装。文章提供了两种解决方案：安装我们缺少的模块 Oct 14, 2024 · First, you should start by upgrading ComfyUI by using update_comfyui_and_python_dependencies. Please keep posted images SFW. Even more, PyTorch cross attention has more consistent image details. 1+cu124. Mar 13, 2024 · 确保你的环境中没有其他库与xformers存在版本不兼容或依赖冲突的问题。 6. py develop? And I have no clue what to do about it. Attention mode 'softmax-xformers' is not available. git_tag run = launch_utils. At the first attempt of image generation it will take some time (10-20 minutes) but after that your image generation will be faster. However, installing it and starting the web UI throws the "Matching Triton is not available" and it did not enable xformers. 0 but it seems I'm already running 2. May I ask you how you replaced these packages in conda, I used the command conda install pytorch==2. dev761 vs. post1. However, the current portable version doesn't come with xformers by default because pytorch now includes xformers capabilities on its own without xformers. Jan 25, 2025 · 文章浏览阅读2. Jun 1, 2024 · ValueError: xformers is not available. What I did was delete the '--extra-index-url' lines and just leave the '!pip install -q -r requirements. 2, and re-installed xformers 0. Proceeding without it. info` for more info triton is not available Mar 5, 2024 · WARNING[XFORMERS]: xFormers can't load C++/CUDA extensions. index_url dir_repos = launch_utils. Welcome to the unofficial ComfyUI subreddit Mar 2, 2025 · Hardware and software needed to run ComfyUI and optimum set-up. 11. In our tests, the optimizations performed in the attention blocks allow for both faster speed and reduced memory consumption. Apr 25, 2024 · I found out that after updating ComfyUI, it now uses torch 2. So I downgraded torch to 2. Installing xFormers We recommend the use of xFormers for both inference and training. 3 Loaded [ComfyUI-Easy-Use] web root: D:\ComfyUI\custom_nodes\ComfyUI-Easy-Use\web_version/v2 Loaded ### Loading: ComfyUI-Impact-Pack (V7. Why Python, CUDA, Pytorch and Xformers are important. Well it simply uses comfy's xformers check, which passes if it's installed and can be imported, and that it's not disabled by the command line argument --disable-xformers. 2 , but our requirements specify torch to be 1. 4, CUDA 12. 11 + PyTorch 2. Now guess what after I updated the web UI with this Jan 1, 2025 · xformers的安装与否并不影响comfyui可以正常运行，图像还是可以正常生成的，只是速度会慢一些，如果你的显卡本身显存不大，还是建议更新安装下的。这里我用4090测试了下，本来以为可能没什么影响，实际发现就算是4090这种大显存的显卡，仍然能带来不小的 Sep 19, 2024 · If you are unable to resolve the "ComfyUI No Module 'xformers'" error, there are a few alternative solutions available: Check for Compatibility: Confirm that the ComfyUI library you're using is compatible with the version of Python and the operating system you are running. That being said, there is definitely a need to have a force-xformers flag. Check Compatibility: Ensure your ComfyUI installation supports XFormers by running `conda env list` and looking for “xformers” in the listed environment. 6. 3. 2: A Leap Forward in Multimodal and Mobile AI Meta recently unveiled Llama 3. 2 - Analytics Vidhya Apr 11, 2025 pm 12:04 PM. 4), generations take roughly 2-to-3x slower without xformers. 15. Welcome to the unofficial ComfyUI subreddit. Processing without Attention mode 'softmax-xformers' is not available. Make sure it is installed correctly; The text was updated successfully, but these errors were encountered: All reactions. 0+cu121 with CUDA 1201 (you have 2. 12. 没有模块“xformers”。在没有它的情况下继续。 原因： 通过报错，其实也能知道一个大概的原因，主要就是：没有模块“xformers“。 什么是“xformers”模块？ 该模块xformers能对GPU有一定优化，加快了出图的速度。 Sep 2, 2024 · Getting Started With Meta Llama 3. post2 is released, see below for instructions. python git = launch_utils. 0 + cu124 Set vram state to: NORMAL_VRAM Device: cuda: 0 NVIDIA GeForce RTX 4090 D : cudaMallocAsync xFormers not available xFormers not available 🌊 DEPTHFLOW NODES 🌊 [ComfyUI-Easy-Use] server: v1. Mar 1, 2024 · It says I need Pytorch >= 2. If you are talking about the a1111 webui the code quality is quite bad and it's most likely a problem with the UI code itself rather than xformers. Oct 13, 2024 · Hello Experts, Today i have installed ([ComfyUI-UniAnimate-W]) this node and its dependencies after that when i try to restart my ComfyUI it did not start the i manually update all the things from `flshattF` is not supported because: xFormers wasn't build with CUDA support Operator wasn't built - see `python -m xformers. I would say you can use the UI. 7 (you have 3. The official instruction recommend an installation with torch==2. 2+cu121) Python 3. Sep 2, 2024 · この記事では、comfyui 使用時の「モジュール 'xformers' がありません」エラーの問題を解決します。このエラーは、comfyui には「xformers」モジュールが必要ですが、インストールされていない可能性があるために発生します。この記事では、次の 2 つの解決策を提供します。 不足している pip install xformers (when a prebuild wheel is available, it take a few days in general after a pytorch update)/ If you do simple t2i or i2i you don't need xformers anymore, pytorch attention is enough. 1. This is not a problem in Pytorch >= 2. 2. float16) key : shape=(2, 1024, 10, 64) (torch. Method 2: use the latest dev branch. It is not the case that xformers is somehow no longer needed. 中文翻译. We would like to show you a description here but the site won’t allow us. float16) attn_bias : <class 'NoneType'> p : 0. bat to start Automatic1111/Forge and move to command prompt, you will see "Launching webui with args = --xformers" message. run is_installed = launch_utils. 9w次，点赞9次，收藏27次。文章讲述了xformers是SD的加速模块，虽然不是必须，但能提升图片生成速度。在安装SD后发现缺少xformers模块，可以通过pip单独安装，需要注意版本与torch的兼容性，错误的版本可能会破坏环境。 Feb 9, 2023 · Triton is not available on Windows, but it does not affect InvokeAI functionality in any way. 8k次，点赞33次，收藏27次。xformers的安装与否并不影响comfyui可以正常运行，图像还是可以正常生成的，只是速度会慢一些，如果你的显卡本身显存不大，还是建议更新安装下的。 May 16, 2024 · NotImplementedError: No operator found for memory_efficient_attention_forward with inputs: query : shape=(2, 1024, 10, 64) (torch. 2 Attention mode 'softmax-xformers' is not available. bat but if you want to start over you can just rename/delete the folder and start from scratch if you want. Sounds like it. Copy Feb 27, 2024 · Stable Diffusionを使用している際、xformersにエラーが起きて困ったことはないでしょうか？この記事では、xformersにエラーが起きたときの対処法や、エラー解消に役立つWEBサイトの紹介をしています。ぜひご覧ください！ Aug 7, 2024 · I'm wondering what's the difference w/wo xformers? It can help a lot if you run at higher input image sizes, but only works with cuda. 5) ### Loading: ComfyUI Oct 27, 2024 · xformersからtritonのimport要求条件を削除する LoRAを作成するKohya's GUIには、オプションとしてtritonのインストールオプション(※Danger!という警告付きで)がありますが、 なぜ、そんなモノがあるかと言えば、xformersの構造的宿痾というべきもので、以下の記事でも既に解説しています。 では、何故Kohya Feb 22, 2024 · 6. 0 torchaudio==2. If you want to update to it you have to download a new version of the standalone. After that, you have to uninstall and reinstall xformers. commit_hash git_tag = launch_utils. A modal appears with the below text: Jan 23, 2023 · This issue can occur on Linux too, not just "falsely" on Windows as claimed here. Jun 3, 2024 · But yeah, xformers is often problematic to install, might not be worth the trouble. Then, I used this code: Mar 12, 2024 · I followed the tutorial in the description to a T and I had it working, but once I installed moondream it stopped. Mar 1, 2025 · すでにxformersが導入していて、かつ1111を更新及び再起動したときに notice（注記）として、そのxformersのバージョンでは未検証（サポート外みたいなもの）と表示されることがあります。 そんなときは、コマンド「--reinstall-xformers」を追記しましょう。 Sep 9, 2024 · [Crystools INFO] GPU/s: [Crystools INFO] 0) NVIDIA GeForce RTX 4090 [Crystools INFO] NVIDIA Driver: 560. Aug 27, 2024 · warning：xFormers not available. I don't have this line in my launch. 0, which has no compatible version of xformers, so the log complained that I had no xformers installed. info command, xformers is not found or recognised or listed in the pip list. 0 decoderF is not supported because: xFormers wasn't build with CUDA support Feb 23, 2024 · Processing without no module 'xformers'. Starting from version 0. You switched accounts on another tab or window. 👍 15 H4ss2, toyxyz, matrunchyk, joshistoast, Pfannkuchensack, neednotapply, Renfield286, Kerin637, TomYule, kenny-kvibe, and 5 more reacted with thumbs up emoji 👎 2 blyamur and yazeedalrubyli reacted with I had the same problem. For instance, I was able to successfully compile xformers on Paperspace for the M4000. 2, a significant advancement in AI featuring powerful vision capabilities and lightweight text models optimized for mobile devices. Please share your tips, tricks, and workflows for using this software to create your AI art. Less focus on Lex and focus on ideas, whether related to Lex Fridman Podcast or not. I will refrain from updating ComfyUI until the next xformers release is ready. 1 . bat inside the update folder. Memory usage drops significantly and if you use float16, there's a significant speed up as well. 4/xFormers/"Torch not compiled with CUDA enabled" thing has broken ComfyUI. 多说一句，可能并不是所有的 AI 软件都适合自行安装 xformers，我在 WebUI Forge 中安装后导致软件无法启动，不知道它是不是有别的启用 xformers 方法。 安装 Stable-Fast. 12 + PyTorch 2. 使用正确的Python版本. bat, but what do I do after that? Also for installing xformers: "Nvidia users should install torch and xformers using this command: Jan 30, 2025 · note: do not enable --xformers, currently it is not compatible xformers v0. py. 20. info shows xformers package installed in the environment. 2, torchvision to 0. Typically, it is located in \ComfyUI\python_embeded\Lib\site May 23, 2024 · Ok, so I'm using ComfyUI Portable, now I deleted it and downloaded it again, then I did a "comfyui update" but, I still having some errors Could you explain to me how to do this upgrade, because I am having many difficulties here. 94 xFormers not available xFormers not available [ComfyUI-Easy-Use] server: v1. 04 with an RTX 3090. xFormers: 一个用于推理加速的库，尤其是当输入尺寸增大时，能有效减小显存占用和推理时间。如下表（Depth anything v1上的报告） 安装的话，如果pytorch版本足够新，可以直接简单式安装. args python = launch_utils. Members Online Jeff Bezos: Amazon and Blue Origin | Lex Fridman Podcast #405 Triton is not available for windows, but you can still use xformers. When I launch without specific parameters it says xformers version: 0. 16 cannot be used for training (fine-tune or DreamBooth) in some GPUs. 0. float16) value : shape=(2, 1024, 10, 64) (torch. 4. 1 No significant difference in speed/vram. Sep 14, 2024 · Expected Behavior Xformers working? dlbackend\comfy\ComfyUI\custom_nodes\ComfyUI_LayerStyle\resource_dir. But if I cd into some other directory and run the pip list or python -m xformers. 8 Loaded [ComfyUI-Easy-Use] web root: D:\ComfyUI_windows_portable\ComfyUI Mar 15, 2024 · I'm running ComfyUI on ubuntu linux 22. Thx! We would like to show you a description here but the site won’t allow us. py and not webui-user. 1. This message can be safely ignored. How shall I fix No module 'xformers'. xFormers was built for: PyTorch 2. Any use case that xFormers is necessary? Total VRAM 23027 MB, total RAM 65217 MB pytorch version: 2. Im not sure why that guide would have you edit launch. After xFormers is installed, you can use enable_xformers_memory_efficient_attention() for faster inference and reduced memory consumption as shown in this section. This is just a warning, can be safely ignored. 1/CUDA 12. (I literally gave the information today in this discussion: #5240 (comment)) Jun 10, 2024 · I for some reason had to reinstall comfyui, and then this popped up again for me too, despite having xformers installed. Meta's Llama 3. On my 3090 TI I get a 5-10% performance increase versus the old standalone. 0 pytorch-cuda=11. 不要使用“–xformers”，而是尝试使用“–opt-sdp-attention”或“–opt-sdp-no-mem-attention” 一些用户质疑 ‘xformers’ 的必要性，以及是否有必要在 Stable Diffusion 环境中使用它。“xformers”是一个库，允许用户创建比他们通常所能达到的更大的图像。 Oct 8, 2022 · Describe the bug While trying to generate an image with --force-enable-xformers on GTX970, I'm getting the error: NameError: name 'xformers' is not defined Full traceback is here: https://gist. 8，这就导致我原本的开发环境不可用了。 Jan 26, 2024 · Installing XFormers in ComfyUI: Method 1: Using Conda. dev20240222. gith Now commands like pip list and python -m xformers. You signed out in another tab or window. skelm mxioys ddou duvsw kga jkoavx qzgzyg bzbix tpfw fpnujc rnazz vczgcc dicrv strvkph pkd