Issues

• [Bug] Build fails because the latest PyTorch release requires c++20

  open-mmlab/mmcv#3341 · Filter by author yurivict opened on Sep 17, 2026

• [Docs] Request for official installation guide for MMCV on AMD ROCm and Intel Arc oneAPI platforms

  open-mmlab/mmcv#3338 · Filter by author Ultraluxe25 opened on Aug 24, 2026

• [Docs] How I Built MMCV 2.1.0 on Windows 11 for RTX 5060 Ti (CUDA 12.8)

  open-mmlab/mmcv#3335 · Filter by author semihhdemirel opened on Jul 30, 2026

• [Bug] AttributeError: module 'pkgutil' has no attribute 'ImpImporter'. Did you mean: 'zipimporter'?

  open-mmlab/mmcv#3334 · Filter by author hoseinalhoseiny opened on Jul 29, 2026

• [Bug] 昇腾910B芯片上在Jupyterlab容器中使用mmcv的sigmoid_focal_loss接口时出现python GIL问题

  open-mmlab/mmcv#3331 · Filter by author jxfruit opened on May 8, 2026

• [Bug] win10 cuda12.8 pytorch2.11 error when installing mmcv2.1.0

  open-mmlab/mmcv#3329 · Filter by author FreemanTang opened on Apr 15, 2026
  2

• [Docs] How I Got MMCV to Build on RTX 5090 (CUDA 12.8)

  open-mmlab/mmcv#3327 · Filter by author YuchenZHANG2 opened on Feb 11, 2026
  6

• [Bug] setup.py raises ModuleNotFoundError: No module named 'pkg_resources' after release of setuptools 82.0

  open-mmlab/mmcv#3325 · Filter by author boyarchenkov opened on Feb 9, 2026
  9

• [Bug] mmcv ops cannot use AICore on torch 2.6.0 on Ascend npu

  open-mmlab/mmcv#3324 · Filter by author Appgye opened on Feb 5, 2026
  1

• [Bug]ModuleNotFoundError: No module named 'mmcv._ext'(Buid from source on Linux with CUDA12.8, python 3.12, pytorch2.9.1+cu128 )

  open-mmlab/mmcv#3319 · Filter by author yshawen opened on Dec 19, 2025
  5

• [Bug]

  open-mmlab/mmcv#3318 · Filter by author zcr45468-alt opened on Dec 18, 2025

• [Feature] how to unstar this project?

  open-mmlab/mmcv#3317 · Filter by author liulanyang-alpha opened on Dec 12, 2025

• "mmcv._ext " problem how How did I solve

  open-mmlab/mmcv#3316 · Filter by author uilstong opened on Dec 11, 2025
  1

• MMCV Is Outdated on macOS

  open-mmlab/mmcv#3314 · Filter by author MingMingwa opened on Nov 17, 2025

• [Bug] 昇腾910B使用box_iou_rotated，框数大一点就会报错

  open-mmlab/mmcv#3311 · Filter by author jh543606332 opened on Oct 23, 2025
  2

• [Bug] mmcv._ext not getting built with Pytorch 2.9.0 and Cuda 13.0

  open-mmlab/mmcv#3310 · Filter by author jaquilio opened on Oct 21, 2025
  6

• [Bug]

  open-mmlab/mmcv#3304 · Filter by author MX-S opened on Sep 19, 2025

• [Docs] Build from source with Python 3.12 + PyTorch 2.8 + CUDA 12.9 is easy and works on Linux

  open-mmlab/mmcv#3303 · Filter by author JohannesTheo opened on Sep 17, 2025
  22

• [Bug] SSL certificate expired for https://download.openmmlab.com

  open-mmlab/mmcv#3302 · Filter by author 24hours opened on Aug 18, 2025
  18

• [Docs]

  open-mmlab/mmcv#3301 · Filter by author fanhua-sez opened on Aug 5, 2025

• [Bug] Where can I find force_fp32 and auto_fp16 in new version?

  open-mmlab/mmcv#3300 · Filter by author Rango-T10000 opened on Jul 31, 2025

• [Bug] 昇腾Ascend910B运行报错： undefined symble

  open-mmlab/mmcv#3299 · Filter by author oym1994 opened on Jul 21, 2025
  1

• [Docs] Typo in api_reference

  open-mmlab/mmcv#3295 · Filter by author hanbing0715 opened on Jun 24, 2025

• is a joke

  open-mmlab/mmcv#3291 · Filter by author jichaoqun opened on Jun 8, 2025
  3

• [Feature] Did mmcv support torch.compile?

  open-mmlab/mmcv#3290 · Filter by author bailuan opened on May 29, 2025