Faster Parallel Reductions on Kepler – NVIDIA Technical Blog News and tutorials for developers, data scientists, and IT admins 2025-03-26T22:01:23Z http://www.open-lab.net/blog/feed/ Justin Luitjens <![CDATA[Faster Parallel Reductions on Kepler]]> http://www.open-lab.net/blog/parallelforall/?p=2551 2022-08-21T23:37:02Z 2014-02-14T04:30:44Z Parallel reduction is a common building block for many parallel algorithms. A?presentation from 2007 by Mark Harris?provided a detailed strategy for...]]> Parallel reduction is a common building block for many parallel algorithms. A?presentation from 2007 by Mark Harris?provided a detailed strategy for...

Parallel reduction is a common building block for many parallel algorithms. A presentation from 2007 by Mark Harris provided a detailed strategy for implementing parallel reductions on GPUs, but this 6-year old document bears updating. In this post I will show you some features of the Kepler GPU architecture which make reductions even faster: the shuffle (SHFL) instruction and fast device memory��

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