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[BUG] Neon performs worse than C #1088

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hanyin-arm opened this issue Dec 19, 2024 · 0 comments
Open

[BUG] Neon performs worse than C #1088

hanyin-arm opened this issue Dec 19, 2024 · 0 comments

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@hanyin-arm
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Hi, when we build and run your hello-neon sample app on my Pixel 2 (Snapdragon 835) and Pixel 9 (Tensor G4), both show a worse performance using Neon as shown below

image
image

Upon some initial investigation, our SIMD experts are worried about this sample code's FIR filter's Neon algorithm being sub-optimal, thus not leveraging Neon's potentials on performance boost.

Please let us know your thoughts and we can follow up either in public or private (e.g. via my @arm.com email)
Thank you and happy holidays 🎄

@hanyin-arm hanyin-arm changed the title [BUG] Neon approach performs worse than C approach [BUG] Neon performs worse than C Dec 19, 2024
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