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A comment on Efficient Parallel Scan Algorithms for GPUs (2008) [pdf].

Re:Efficient Parallel Scan Algorithms for GPUs (2008) [pdf] by john_owens on Sunday January 01, 2017 @10:45PM (#13298902)
I recommend the Merrill/Garland NVIDIA technical report from March 2016, "Single-pass Parallel Prefix Scan with Decoupled Look-back", as the current state of the art for scan on GPUs.

https://research.nvidia.com/publication/single-pass-parallel...

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