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Top 4 C++ simd-programming Projects
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Project mention: SIMD Perlin Noise: Beating the Compiler with SSE | news.ycombinator.com | 2025-07-23
Yes indeed, it's about 500 LOC in https://github.com/google/highway/blob/master/hwy/ops/generi....
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Project mention: Understanding SIMD: Infinite Complexity of Trivial Problems | news.ycombinator.com | 2024-11-30
I'm surprised no one has mentioned Vc. I found ispc clunky and not as performant, and std::simd didn't support some useful math ops like rsqrt. Vc has been around for years, I have no trouble including it in my codes, it has masking and many of the most useful math ops, and I can get over 1 TF/s on a consumer-grade Ryzen and at least 3 TF/s on the big Epyc CPUs.
https://github.com/VcDevel/Vc
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Here is a bunch of simple examples: https://github.com/jfalcou/eve/blob/fb093a0553d25bb8114f1396...
I personally think we have the following strenghs:
* Algorithms. Writing SIMD loops is very hard. We give you a lot of ready to go loops. (find, search, remove, set_intersection to name a few).
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NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
C++ simd-programming discussion
C++ simd-programming related posts
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Three Fundamental Flaws of SIMD
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Why those particular integer multiplies?
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Highway – Portable SIMD Library
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VOLK: Vector-Optimized Library of Kernels for GNU Radio
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Highway: C++ library that provides portable SIMD/vector intrinsics
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Llamafile 0.7 Brings AVX-512 Support: 10x Faster Prompt Eval Times for AMD Zen 4
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Gemma.cpp: lightweight, standalone C++ inference engine for Gemma models
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A note from our sponsor - Sevalla
sevalla.com | 2 Sep 2025
Index
What are some of the best open-source simd-programming projects in C++? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | highway | 4,983 |
| 2 | Vc | 1,491 |
| 3 | eve | 1,241 |
| 4 | volk | 606 |
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