NVIDIA
[BUG]: cuda.core.experimental._stream.IsStreamT and cuda.core.experimental._memory.DevicePointerT missing in v0.5.0
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Type of Bug
Runtime Error
Component
cuda.core
Describe the bug
cuda.core 0.5.0 removed "experimental" in the module path, and added expermental/init.py for compatibility, but cuda.core.experimental._stream.IsStreamT and cuda.core.experimental._memory.DevicePointerT are not included, leading to compatibility issue if IsStreamT or DevicePointerT is used.
Neither IsStreamT nor DevicePointerT is exposed in __init__.py and treated as public API, but they appears in the public API arg list, see:
- https://nvidia.github.io/cuda-python/cuda-core/0.5.0/generated/cuda.core.Device.html#cuda.core.Device.create_stream
- https://nvidia.github.io/cuda-python/cuda-core/0.5.0/generated/cuda.core.Buffer.html#cuda.core.Buffer.from_handle
they should be treated as public and maintain compatibility within a major version.
How to Reproduce
install cuda.core 0.5.0
Python 3.10.19 (main, Oct 28 2025, 12:10:48) [Clang 20.1.4 ] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import cuda
>>> from cuda.core.experimental._stream import IsStreamT, Stream
<stdin>:1: DeprecationWarning: The cuda.core.experimental namespace is deprecated. Please import directly from cuda.core instead. For example, use 'from cuda.core import Device' instead of 'from cuda.core.experimental import Device'. The experimental namespace will be removed in v1.0.0.
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ModuleNotFoundError: No module named 'cuda.core.experimental._stream'
Expected behavior
from cuda.core.experimental._stream import IsStreamT and from cuda.core.experimental._memory import DevicePointerT should work w/o errors.
IsStreamT and DevicePointerT are exposed in cuda.core.experimental
Operating System
No response
nvidia-smi output
No response
