NVIDIA / NVIDIA/cccl

Improving cub::GridBarrier documentation

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cub
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Description

This issue is a follow up of the https://github.com/NVIDIA/cub/issues/369

The documentation of cub::GridBarrier is unclear to understand the grid size limitation which could be throttled by the SM count, block size, and the dynamic shared memory size.

It would be great if @senior-zero and other cub experts can describe it clearly.

Thank you so much,
Lilo

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