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Provide the Rust payload, group and scratch contracts, native CUB provider and Oxide integration with complete Block and Warp I/O. Signed-off-by: Trent Nelson <trent@trent.me>
Expose Block and Warp scans with explicit payload validity, prefix registration and native provider integration. Signed-off-by: Trent Nelson <trent@trent.me>
Avoid copying inactive batch output lanes while preserving active results and add focused coverage for narrow output batches. Signed-off-by: Trent Nelson <trent@trent.me>
Provide scalar and payload reductions with validity-aware results. Include checked stateless and uniform i32 capture callbacks at their first public consumer, together with the native callback ABI. Signed-off-by: Trent Nelson <trent@trent.me>
Signed-off-by: Trent Nelson <trent@trent.me>
Preserve the batch dimension and per-batch output validity while using the CUB output-copy guard. Include the provider shape correction. Signed-off-by: Trent Nelson <trent@trent.me>
Expose complete Block and Warp exchange operations and Block shifts with explicit layout, output validity and scratch completion. Signed-off-by: Trent Nelson <trent@trent.me>
Provide neighboring-item transforms and head/tail flags with typed neighbor controls, payload validity and explicit scratch completion. Signed-off-by: Trent Nelson <trent@trent.me>
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Add neighboring-item differences and discontinuity flags with typed boundary values, copied suffixes where specified and fresh valid outputs. Both operations share the same payload and scratch conventions.
Builds on #12124. The owning comparison isolates this review unit; the GitHub diff against
mainis cumulative.Validation on the reconstructed layer: formatting, host tests, clippy and docs, plus standalone public examples on CUDA 13.3 / sm_120. The full native provider suite passes separately at the final integrated stack. Historical broader diagnostics, sanitizer and profile evidence retains its original source attribution.
This PR remains draft.