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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>
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Warp batched reductions preserve the batch dimension, calculate output capacity and track valid result slots. Include the exact XYZ provider identity correction so distinct block shapes retain distinct specializations.
Builds on #12119, #12121. 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.