13.0.0-notes.rst

.. module:: cuda.bindings

cuda-bindings 13.0.0 Release notes

Released on Aug 6, 2025

Highlights

• Support CUDA 13.0.
• A utility module :mod:`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 :func:`~cuda.bindings.utils.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.

Bug fixes

• Fix a library loading bug that preferred shared libraries without a SOVERSION.

Miscellaneous

• All Python bindings now have the GIL released when calling into the underlying C APIs.
• Added PTX utilities including :func:`~utils.get_minimal_required_cuda_ver_from_ptx_ver` and :func:`~utils.get_ptx_ver`.
• Common CUDA objects such as :class:`~runtime.cudaStream_t` now compare equal if the underlying address is the same.
• Add a binding to nvvmGetErrorString().
• Build the bindings with Cython profile hooks disabled.
• The internal pathfinder module is now isolated to a standalone package cuda-pathfinder and made as a required dependency.

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.