cuda-bindings 12.X.Y Release notes

Released on MM DD, 2025

Highlights

• A utility module cuda.bindings.utils is added

  • Using int(cuda_obj) to retrieve the underlying address of a CUDA object is deprecated and subject to future removal. Please switch to use get_cuda_native_handle() instead.

• The cuda.bindings.cufile Python module was added, wrapping the cuFile C APIs. Supported on Linux only.

  • Currently using this module requires NumPy to be present. Any recent NumPy 1.x or 2.x should work.

• Python bindings in every module, including driver, runtime, and nvrtc, now have the GIL released before calling the underlying C APIs.

• The Python overhead of calling functions in CUDA bindings in driver, runtime and nvrtc has been reduced by approximately 30%.

Bug fixes

Miscellaneous

• Added PTX utilities including get_minimal_required_cuda_ver_from_ptx_ver() and get_ptx_ver().

• Common CUDA objects such as cudaStream_t now compare equal if the underlying address is the same.

Known issues

• Updating from older versions (v12.6.2.post1 and below) via pip install -U cuda-python might not work. Please do a clean re-installation by uninstalling pip uninstall -y cuda-python followed by installing pip install cuda-python.