Fix cartpole-camera frame-stacking performance regression#5849

Merged

pbarejko merged 14 commits into

isaac-sim:developfrom

jmart-nv:jmart/framestack-perf

Jun 5, 2026

Commits on Jun 4, 2026

Speculative fixes for frame stacking perf regressions introduced in PR #5574.
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Drop read-side torch.roll from CircularBuffer.buffer via memmove-shift on append
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Add CircularBuffer.copy_to_stacked and clone=False opt-out for frame-stack consumers
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Add stack_dim mode to CircularBuffer for free contiguous stacked-output reshape
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Defer RGB normalize past frame-stack buffer.
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Fuse uint8 camera-image normalize via Warp kernel.
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Replace eager uint8 sum with Warp tiled-reduction kernel
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Fix obs aliasing in stacked_image and CircularBuffer.reset
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Changelog fragments for framestack performance regression fix
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Restore original comments that were accidentally trimmed
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Address PR #5849 review feedback (docstrings + cold-path tidy-up)
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Post-rebase cleanup: precommit formatting, variable renames, changelog corrections
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Address Greptile review: int64 partials reduction + clearer CircularBuffer.stacked error
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Commits on Jun 5, 2026

Fix docs build: drop unsupported :paramref: role in CircularBuffer docstring
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