[FEA]: Add a `release()` method to `cuda.core.Buffer` to side-step the Python garbage collector

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Area

cuda.core

Is your feature request related to a problem? Please describe.

@realarnavgoel brought up this issue offline that we currently have a fallback weak finalizer
https://github.com/NVIDIA/cuda-python/blob/d425a8895bd778fffb993263dbf5d9bc631fea22/cuda_core/cuda/core/experimental/_memory.py#L51
in case users forget to explicitly call .close() to free the memory. This could interfere with projects such as nvmath-python and nvSHMEM who require explicit control over the buffer lifetime and deallocation timing.

Describe the solution you'd like

We discussed offline and came up with this proposal that we'll add a .release() method to the buffer object. The idea is that if it is called, the weak finalizer will be unregistered, so that the only way to free the buffer is to call .close() explicitly later.

Describe alternatives you've considered

No response

Additional context

No response

Commencez dans cuda_core/cuda/core/experimental/_memory.py autour de la ligne 51, où le finaliseur faible de secours est défini, et suivez la manière dont le chemin de fermeture de l’objet Buffer le gère. Le travail est terminé lorsque release() désenregistre ce finaliseur, tandis que close() reste le moyen explicite de libérer le buffer ; vérifiez les détails de l’implémentation de Buffer à proximité pour le comportement pertinent.