CUDA Pro Tip: Do The Kepler Shuffle – NVIDIA Technical Blog News and tutorials for developers, data scientists, and IT admins 2025-03-21T20:30:26Z http://www.open-lab.net/blog/feed/ Mark Harris <![CDATA[CUDA Pro Tip: Do The Kepler Shuffle]]> http://www.open-lab.net/blog/parallelforall/?p=2626 2022-08-21T23:37:03Z 2014-02-03T11:00:00Z When writing parallel programs, you will often need to communicate values between parallel threads. The typical way to do this in CUDA programming is to use...]]> When writing parallel programs, you will often need to communicate values between parallel threads. The typical way to do this in CUDA programming is to use...

When writing parallel programs, you will often need to communicate values between parallel threads. The typical way to do this in CUDA programming is to use shared memory. But the NVIDIA Kepler GPU architecture introduced a way to directly share data between threads that are part of the same warp. On Kepler, threads of a warp can read each others�� registers by using a new instruction called SHFL��

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