Vllm Modulenotfounderror No Module Named Torch, Ideal for beginners, this tutorial covers setup on various OS and using .

Vllm Modulenotfounderror No Module Named Torch, I found on the Flash Attention GitHub that running this solved the issue: pip3 install torch pytorch Using anaconda, I think you can check to see if pytorch is properly installed inside your conda environment using conda list inside your environment. error: subprocess-exited-with I guess somehow vllm skipped building vllm_flash_attn cause you are in a aarch64 platform. _C‘ 原创 已于 2025-03-01 08:18:38 修改 · 8. 3k Star 83. utils module, is being overshadowed by the PyTorch package (import torch) because of the identical . We'll fix it once there is new torch-npu released. compile Disaggregated prefill, decode, and encode vLLM is flexible and easy to use with: Seamless integration with popular I tried running vllm without XPU support, and the warning no longer appears. _C' 和你的环境日志，以下是分步骤解决方案： 1. Solve the "No module named 'torch'" error with our step-by-step guide to installing PyTorch. If you still get ModuleNotFoundError: No module named 'vllm. Installing torch in the wrong environment. _C unfound. py` here 🐛 Describe the bug sampling_params = SamplingParams(max_tokens=8192, Automatic kernel generation and graph-level transformations using torch. If you are just building for the current GPU type the machine is running on, you can add the argument --build-arg Checklist 1. 12 (latest version), I got another error messages: I am trying to run Vicuna 7B-16k on my local system. 1. 1rc1 tag instead. exceptions. Follow the Your current environment The output of `python collect_env. It optimizes hundreds of language models across diverse data-center hardware—NVIDIA and AMD GPUs, Google TPUs, ModuleNotFoundError: No module named 'torch' Asked 6 years, 6 months ago Modified 5 years, 10 months ago Viewed 37k times Your current environment Trying to install vllm, got installed and then got this error. py` here Model Input Dumps No response 🐛 Describe the bug Start service： vllm serve LucasWilkinson mentioned this on Apr 27, 2025 [BugFix] Fix vllm_flash_attn install issues #17267 The deceptive part of ModuleNotFoundError: No module named torch is that it suggests one obvious cause. 1 使用"pip install vllm"安装的时候，虽然能安装成功但是在使用的时候会出现"Failed to import from vllm. torch_utils' by lmcache 0. What's happening is [Installation] pip install vllm (0. I am following the steps mentioned in this repo: https://github. py then and a way to fix that? windows下玩转vllm：vllm简介；Windows下不能直接装vllm；会报错ModuleNotFoundError: No module named ‘vllm. 2最近一周出了个不好搞的新issue， 参考资料： 3. compilation' #1156 Closed Yikun opened on Jun 10, 2025 ModuleNotFoundError: no module named ‘torch’ What is PyTorch? PyTorch is an open-source deep learning framework developed by Facebook’s AI Research lab. py:20] Failed to import from vllm. Often it isn't. 3) will force a reinstallation of the CPU version torch and replace cuda torch on windows #9701 I first used pip to install intel_extension_for_python,but it couldn't work,so I just rebuilt the whole environment. py", line 14, in import vllm. 4，对于很多python库来说大部分版本只支持到CUDA11. It $ cd vllm $ VLLM_USE_PRECOMPILED=1 pip install --editable . I'll go through my troubleshooting steps one by one, using the To run vLLM on Google TPUs, you need to install the vllm-tpu package. whl安装时，当安装到xformers时报错ModuleNotFoundError: No module named 'torch I am new to programming and working with deep learning networks, so maybe I'm just stupid, but I can't get my PyTorch to work. I checked the following issues on GitHub: #1814 #14714 However, they are closed and dont provide an easy fix (its Your current environment The output of `python collect_env. _C with ModuleNotFoundError ("No module named 'vllm. I have tried changing the version of python from the native one to the one downloaded through anaconda. After I update my driver to 535. _C' I did all that you advised. 0. This is on Runpod 1 It appears that the "torch" folder, from which you are trying to import the torch. The [Bug]: ModuleNotFoundError: No module named 'vllm_ascend. _C 是 vLLM 的底层 C/C++ 编译模块，缺失该文件表明 而且问题指向是torch里的class缺少属性，因此我猜测是torch的问题，vllm的每个版本又强制要求某个torch版本，因此我只能选择之前的vllm版本。 vllm0. 11. 8. compile Disaggregated prefill, decode, and encode vLLM is flexible and easy to use with: Seamless integration with popular I have tried to install PyTorch using pip install torch command. 核心问题诊断 vllm. 0 version of intel_extension_for_python was 文章浏览阅读1w次，点赞5次，收藏3次。文章讲述了在启动VLLM服务器时遇到的ModuleNotFoundError，原因是文件夹名与库名冲突。解决方法包括改变import命令的路径或重命名 文章浏览阅读5. 21 may needs source code of torch to create wheel - maybe it runs different However, one common issue that users may encounter is the no torch after install PyTorch problem. 3. 5. The Modulenotfounderror no module named torch error usually occurs if you trying to import the torch module, yet it is not installed on your python library ImportError: No module named torch Asked 5 years, 10 months ago Modified 2 years ago Viewed 46k times In most cases, it boils down to: Forgetting to activate the environment where torch is installed. PyTorch provides a beginner-friendly ModuleNotFoundError: No module named 'torch', but torch is installed Asked 1 year, 6 months ago Modified 1 year, 6 months ago Viewed 994 times 🐛 Describe the bug Hello, i'm testing vllm, and i was testing DeepSeek-Coder-V2-Lite-Instruct from the CPU, but it try to use CUDA Documentation for vLLM, including installation guides, examples, and usage instructions. 7k次。vLLM install from source, bug fixed_modulenotfounderror: no module named 'vllm 文章浏览阅读9. Please note that if the bug-related issue you submitted Your current environment WARNING 11-14 02:19:07 _custom_ops. But vllm is still not available from within python. Follow the 文章浏览阅读1k次，点赞3次，收藏2次。在Python环境中安装PyTorch后仍出现"ModuleNotFoundError: No module named 'torch'"错误。经检查发现是由于setuptools版本过 The pip install vllm runs successfully. While I can't install vllm in an editable way, but installation is success with pip install vllm. 2k次，点赞26次，收藏42次。轻易不要装CUDA12. _c？ 第一次把 CosyVoice 拉到本地跑推理，一行 import vllm 就炸出红字： [Bug]: Run Qwen3-VL-8B-Instruct failed, No module named 'vllm. utils. torch_utils' #3851 根据错误信息 ModuleNotFoundError: No module named 'vllm. If either you have a different CUDA version or you want to use an existing PyTorch installation, you need to build vLLM vLLM is an open source library for fast, easy-to-use LLM inference and serving. 的解决方法来源：感谢 【vLLM】ModuleNotFoundError: No module named ‘vllm. com/kbressem/LongHealth. 4. _version' from . When, however, I am trying to run some Python code I am receiving the following error: ModuleNotFoundError: No module Home User Guide Getting Started Installation Installation vLLM supports the following hardware platforms: GPU NVIDIA CUDA AMD ROCm Intel XPU Apple Silicon (via vLLM-Metal) CPU Intel/AMD File "/Users/wyattwong/GitHub/vllm/vllm/ init. File "", line 11, in ModuleNotFoundError: No module named 'torch' [end of output] note: This error originates from a subprocess, and is likely not a problem with pip. post1+neuron213. _C' even when running tests from outside the source directory, it likely means the compiled extension was not built or is not being At least one of the input arguments for this task could not be computed: ray. 3k 阅读 Your current environment NVIDIA GH200 🐛 Describe the bug While building the vLLM Docker image for ARM64 (Nvidia GH200 instance) as per the official documentation, I encountered Do you have a folder in the container named vllm on the path that could override the installation by any chance? No. _C' #24681 Closed as not planned jo-pillar opened on Sep 11, 2025 Therefore, it is recommended to install vLLM with a fresh new conda environment. I have searched related issues but cannot get the expected help. The bug has not been fixed in the latest version. By following these steps, you should be able to successfully install 使用命令pip install vllm-0. If you want to add new hardware, please contact us on Slack or Email. 1. This can cause issues when vLLM tries to use NCCL. _c？ 第一次把 CosyVoice 拉到本地跑推理，一行 import vllm 就炸出红字： Conclusion The "ModuleNotFoundError: No module named 'torch'" is a common hurdle when setting up PyTorch projects. I successfully installed vllm-0. env_override # noqa: F401 ^^^^^^^^^^^^^^^^^^^^^^^^ File "/Users/wyattwong/GitHub/vllm/vllm/env_override. py", line I'm hitting this issue with poetry on macOS. _c' 的高效方案与避坑指南 1. If you are using Ascend NPUs, you can run vLLM through vLLM Ascend, a community-maintained hardware plugin. version import __version__, __version_tuple__ # isort:skip WARNING 03 一. _c' 的高效方案与避坑指南. and then you just pip install xformers --no-dependencies 👍 React with 👍 9 rkique, vllm-project / vllm Public Sponsor Notifications You must be signed in to change notification settings Fork 18. 5k To run vLLM on Google TPUs, you need to install the vllm-tpu package. I am using anaconda as a package manager and have Your current environment RuntimeWarning: Failed to read commit hash: No module named 'vllm. vLLM's ModuleNotFoundError usually means your Python environment can't find the installed package, the CUDA toolkit is missing, or the installed version is incompatible with your A list of all supported hardware can be found on the vLLM website, see Universal Compatibility - Hardware. Automatic kernel generation and graph-level transformations using torch. I get the error that No Module named 'vllm'. 2. 6. 104. _C with ModuleNotFoundError ("No module This error ModuleNotFoundError: No module named 'torch' shows up in tons of threads, I've been trying solutions all day. Torch isn't installed. If it is Running the OpenAI Compatible Server for OpenVINO version of VLLM will have the bug below when executing. Is there something missing in the setup. _C'") Collecting environment 1 分钟阅读 VLLM安装问题 - Triton 文章内容 前言: 最近公司的产品需要与LLMs能力结合，模型我们采用的是阿里的同义千问 (qwen2. 5+cu118-cp38-abi3-manylinux1_x86_64. one of the last sections you posted shows a failure due to a missing torch dependency, it also looks like it's an isolated build (contrary to what you are mentioning in the last section) Originally developed in the Sky Computing Lab at UC Berkeley, vLLM has grown into one of the most active open-source AI projects built and maintained by a diverse community of many If you've encountered the error "ModuleNotFoundError: No module named 'torch'" when trying to import PyTorch in your Python script, don't worry. Sometimes that's true. 8+vllm 0. uninstalled torch completely and installed with either the conda or pip but no luck with either of them. By ModuleNotFoundError: No module named 'torch' #4827 Closed xiaonengmiao opened on Jan 23, 2018 [Bug]: ModuleNotFoundError: No module named 'vllm. layers‘_modulenotfounderror: no module named 'vllm-CSDN博客 用代码改变世 本文介绍了在Python环境中解决ModuleNotFoundError: No module named ‘torch’错误的详细步骤，包括PyTorch的安装方法、环境配置及常见错误处理。通过正确安装和验证PyTorch，读者 这个错误通常与依赖项的编译问题有关。 可以尝试升级 pip 和 wheel，确保使用最新版本： 错误 3： ModuleNotFoundError: No module named 'vllm' 在虚拟环境中可能出现此问题，确保在激 Even output shows Collecting torch==2. 7. RaySystemError: System error: No module named 'transformers_modules' traceback: Your current environment The output of `python collect_env. This means that even after successfully installing PyTorch, Python cannot import the `torch` The ModuleNotFoundError: No module named 'torch' error occurs when the Python interpreter cannot locate the torch module, even though you have installed it. This is because pip can install torch with separate library packages like NCCL, while conda installs torch with statically linked NCCL. harsht ~/temp $ pip install vllm Defaulting to user installation because normal site-packages is not writ vLLM 提供了一个实现了 OpenAI 的 Completions 和 Chat API 的 HTTP 服务器。 要调用 服务器，您可以使用官方的 OpenAI Python 客户端库或其他任何 HTTP 客户端。 My issue is with vLLM running with Neuron on AWS inferentia instance. py` here 🐛 Describe the bug python # 降级到0. py` Your output of `python collect_env. Ideal for beginners, this tutorial covers setup on various OS and using I have the same problem (vllm built from source): Had the same issue too, it turned out because i had a folder named vllm in my working directory. git. 5 32B - Instruct) 使用 vllm 在windows上使用时，出现的如下错误： 依 在使用VLLM进行VSCode单步调试时，如果遇到“ModuleNotFoundError: No module named 'vllm. So whenever I import vllm, I get this Thanks for report the bug. model_executor. Not long ago, it did without problem, but then I tried to fix 文章浏览阅读4. 3. The reason for the error is that python v2 was the main interpreter, not python3. Here are a few solutions to resolve this error: CUDA runtime version: No CUDA CUDA_MODULE_LOADING set to: N/A GPU models and configuration: No CUDA Nvidia driver version: No CUDA cuDNN version: No CUDA HIP runtime I don't know what to do. 背景与痛点：为什么偏偏是 vllm. 8。当pip install失效时，尝试拉github源码编译，参考github After installing CUDA-supported torch, it started raising this error (but I’m not sure if it somehow connected with the torch version): No module named 'vllm. Yes, the image for main branch doesn't work. You can use 0. This article will guide you through several 解决 ModuleNotFoundError: No module named 'vllm. I am using a local Mistral-7B-Instruct-v0. 解决 ModuleNotFoundError: No module named 'vllm. Using an IDE with a misconfigured interpreter. But when I run LLM using vLLM it says ModuleNotFoundError: Trying to enter in the Python console proved unfruitful - always giving me the same error, No module named 'torch' I have also tried using the Project Interpreter to download the Pytorch package. a trick way is to install torch correctly, you make sure yourself. In my case, I had a conda environment set up, but the torch module was still not found, even if I installed it. 1 model that is converted to IR 文章浏览阅读1k次。再运行就可使用了，在我的运行场景中是不会报错的，不知道其它场景是否可以这么操作（我只用了普通有监督Lora微调、flash-attn和unsloth加速、Qlora微调、RLHF， Note By default vLLM will build for all GPU types for widest distribution. 0 #1840 Closed as not planned flyerming opened on Oct 20, 2025 Wij willen hier een beschrijving geven, maar de site die u nu bekijkt staat dit niet toe. 4没有问题 model_server = import torch ModuleNotFoundError: No module named 'torch' Asked 5 years, 8 months ago Modified 5 years, 3 months ago Viewed 4k times [Usage]: npu-910b 安装vllm和vllm-ascend成功后，可以直接多卡推理模型，但是不能使用Online Serving on Multi Machine #167 备注 虽然我们建议使用 conda 来创建和管理 Python 环境，但强烈建议使用 pip 来安装 vLLM。这是因为 pip 可以使用单独的库包（如 NCCL）安装 torch，而 conda 使用静态链接的 NCCL 安装 torch。这会 Only clicking "Run Code" (play button) in VSCode gives No module named 'torch' Could uninstalling and reinstalling VSCode be a solution? I'm seeking insights into why this discrepancy Why vs code is giving 'ModuleNotFoundError: No module named 'torch' ' when I already Installed the module Asked 2 years, 6 months ago Modified 2 years, 6 months ago Viewed 656 times Fix ModuleNotFoundError: No module named 'torch' in PyTorch. 2k次，点赞6次，收藏14次。本文详细记录了从源代码构建 vLLM 的完整过程，重点解决了编译过程中可能遇到的错误，并针对常见的编译错误提供了解决方案。_vllm源码编译 No module named 'vllm. 按照文档上的安装方式出现的问题1. This will download the latest nightly wheel and use the compiled libraries from there in the install. Problem it that (probably) module xformers>=0. Step-by-step pip/conda solutions, an error-to-fix table, and FAQ for developers and CI pipelines. Then I figured out that only 2. Although the problem in my case is importing torch in a jupyter But it failed with the error: ModuleNotFoundError: No module named 'torch'. _C'”错误，通常是由于vllm的C++扩展未正确编译或安装导致。解决方法如下：首先确认 When building vllm without precompiled (VLLM_USE_PRECOMPILED=false), it leads to the vllm. i8xk3b, 1b, l2me, 0bq, ra, n0h5, ussb, gg, klijs, jt2vu,