Issues

• torch.cuda.amp still used in 5 files (incl. private autocast_mode._cast / grad_scaler.OptState) — deprecated since torch 2.3/2.4, no guards

  NVIDIA/apex#2024 · Filter by author xyf5432 opened on Aug 20, 2026

• incompatibility with nightly pytorch as it requires C++20

  NVIDIA/apex#2005 · Filter by author crcrpar opened on May 22, 2026

• [Bug] FusedRMSNorm leaks 2 CUDA tensors per forward call under torch.no_grad()

  bug
  NVIDIA/apex#1999 · Filter by author dustnehowl opened on Apr 29, 2026

• CWE-22/CWE-73 in permutation cache path: APEX_ASP_CACHE_DIR controls write destination

  NVIDIA/apex#1998 · Filter by author BeforeGodKnows opened on Apr 27, 2026

• cannot import name 'amp' from 'apex'

  bug
  NVIDIA/apex#1991 · Filter by author chouliuzuo opened on Apr 2, 2026
  1

• problem size question for multi-tensor-axpby

  NVIDIA/apex#1970 · Filter by author jinz2014 opened on Dec 15, 2025

• Reduce the number of ignored rules

  NVIDIA/apex#1964 · Filter by author crcrpar opened on Nov 29, 2025
  

• Migrate to LibTorch Stable ABI

  NVIDIA/apex#1946 · Filter by author crcrpar opened on Nov 7, 2025
  1

• Think about removing apex_C

  NVIDIA/apex#1945 · Filter by author crcrpar opened on Nov 7, 2025
  1

• Unable to install apex-ModuleNotFoundError: No module named 'packaging'

  NVIDIA/apex#1939 · Filter by author nanfangshuo opened on Oct 29, 2025
  2

• 适用于：“VS2022 ” “CUDA126” ”python 3.12“ “ComfyUI:-v0.3.40" APEX编辑的"setup.py"代码“

  windows
  NVIDIA/apex#1909 · Filter by author sbfwfnh opened on Jun 9, 2025
  1

• Suitable for: "VS2022" "CUDA126" "Python 3.12" "ComfyUI: - v0.3.40" APEX edited "setup. py" code“

  windows
  NVIDIA/apex#1908 · Filter by author sbfwfnh opened on Jun 9, 2025

• Suitable for: "VS2022" "CUDA126" "Python 3.12" "ComfyUI: - v0.3.40" APEX edited "setup. py" code“

  windows
  NVIDIA/apex#1907 · Filter by author sbfwfnh opened on Jun 9, 2025
  1

• Support env vars to specify cuda extensions to build

  NVIDIA/apex#1906 · Filter by author crcrpar opened on May 31, 2025

• How to solve the incompatibility problem between apex and zero shot tts

  bug
  NVIDIA/apex#1899 · Filter by author v-sanzha opened on Apr 28, 2025
  1

• apex @ nemo v2.2.1 version: build fails: ATen/Dispatch.h:199:48: error: cannot convert ‘const at::DeprecatedTypeProperties’ to ‘c10::ScalarType’

  bug
  NVIDIA/apex#1897 · Filter by author eugeneswalker opened on Apr 23, 2025
  4

• Compilation Error in Apex with CUDA 12.6: isfinite< ::c10::Half> Undefined in Device Code

  windows
  NVIDIA/apex#1885 · Filter by author jorgelozano1980 opened on Feb 26, 2025

• AttributeError: module 'torch' has no attribute 'library'

  NVIDIA/apex#1881 · Filter by author lxy51 opened on Feb 9, 2025
  2

• install warning

  bug
  NVIDIA/apex#1878 · Filter by author boostingboosting opened on Jan 25, 2025
  1

• [Orin Nano] Error when trying to use sparsity

  bug
  NVIDIA/apex#1874 · Filter by author kyflores opened on Jan 8, 2025
  1

• as: symbol lookup error: as: undefined symbol: ZSTD_compressStream2

  NVIDIA/apex#1871 · Filter by author KLL535 opened on Jan 4, 2025
  1

• How should I search for the corresponding APEX release for a specific PyTorch version?

  NVIDIA/apex#1868 · Filter by author skyrise-l opened on Dec 30, 2024
  3

• AttributeError: module 'torch.compiler' has no attribute 'is_compiling'

  bug
  NVIDIA/apex#1857 · Filter by author LukeLIN-web opened on Nov 15, 2024
  6

• Failed the last time, succeeded the next time?上一次还失败，下一次就成功了？

  NVIDIA/apex#1856 · Filter by author zhangs-a-n opened on Nov 1, 2024
  5

• FusedRMSNormAffineMixedDtypesFunction is not importable in the PyTorch build without distributed support

  bug
  NVIDIA/apex#1853 · Filter by author IvanYashchuk opened on Oct 28, 2024