.. _warp-module:

Warp-Wide "Collective" Primitives
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   api/warp

CUB warp-level algorithms are specialized for execution by threads in the same CUDA warp.
These algorithms may only be invoked by ``1 <= n <= 32`` *consecutive* threads in the same warp:

* :cpp:struct:`cub::WarpExchange` rearranges data partitioned across a CUDA warp
* :cpp:class:`cub::WarpLoad` loads a linear segment of items from memory into a CUDA warp
* :cpp:class:`cub::WarpMergeSort` sorts items partitioned across a CUDA warp
* :cpp:struct:`cub::WarpReduce` computes reduction of items partitioned across a CUDA warp
* :cpp:struct:`cub::WarpReduceBatched` computes reduction of multiple batches of items partitioned across a CUDA warp
* :cpp:struct:`cub::WarpScan` computes a prefix scan of items partitioned across a CUDA warp
* :cpp:class:`cub::WarpStore` stores items partitioned across a CUDA warp to a linear segment of memory