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Unnecessary __syncthreads #104

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JohnSully opened this issue Apr 29, 2021 · 1 comment
Open

Unnecessary __syncthreads #104

JohnSully opened this issue Apr 29, 2021 · 1 comment

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@JohnSully
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Forgive me if I'm missing something, but reading the code the __syncthreads in ComputeKeys appears to be unnecessary as I don't see any x-thread communication. Each thread appears to be reading from it's own index in the startx/starty arrays. I do see a decent performance bump if these are removed.

What is the purpose of the __syncthreads call here?
@BarrowHill
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JohnSully, hi dear, have you compiled without this function? Can I check it?

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@JohnSully @BarrowHill