[FEA]: Support inheritance from Buffer

Open Beginner friendly

#2,435 opened on Jul 28, 2026 1 comment 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty: 2/5
Estimated time: 1-3 hours
Newbie friendliness: 62/100

Issue type: Feature
Clarity: Mostly clear
Activity status: Quiet
Tech stack: python
Domain: api

Research direction

Start by locating cuda.core's Buffer implementation and its from_handle() and _reduce_helper() methods, then inspect how returned instances are constructed. Review the related issue #750 and relevant Buffer behavior; done when subclasses inherit both methods and receive subclass instances without breaking existing Buffer behavior.

Written by the indexing model from the issue text.

Description

cuda.core triage

Is this a duplicate?

I confirmed there appear to be no duplicate issues for this request and that I agree to the Code of Conduct

Area

cuda.core

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

nvmath-python is considering creating a subclass of Buffer specific to NVSHMEM because we want to mostly follow cuda.core's semantics for Buffer/MemoryResource, but need some different behavior regarding garbage collection.

Describe the solution you'd like

Buffer should use classmethod instead of staticmethod for all methods that return an instance of the class. i.e. from_handle() and _reduce_helper()

Describe alternatives you've considered

Composing Buffer with our Buffer.
Replicating the Buffer protocol with an unrelated class.
Rolling our own MemoryResource/Buffer abstraction that is unique to nvmath's distributed APIs.

Additional context

Dominant language: Cython
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Forks: 329
Avg merge: 1d 22h
Merged PRs (30d): 113

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