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Top 18 C++ Avx Projects
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thorium
Chromium fork named after radioactive element No. 90. Windows and MacOS/Raspi/Android/Special builds are in different repositories, links are towards the top of the README.md.
Project mention: What, if anything, should I do about using Mozilla's Firefox | news.ycombinator.com | 2025-03-02I'll wait for Ladybird to be more mature.
Until then, I'm more than happy with Thorium:
https://thorium.rocks/
So far, the only complain is it doesn't support Netflix (usual DRM stuff):
https://github.com/Alex313031/thorium/issues/523
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InfluxDB
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I'm not proficient in Rust, but API wise I'd conceptually define types like f32xn or f32s, which have the number of elements that fit into a vector register for your target architecture, so 4 for NEON/SSE, 8 for AVX and 16 for AVX512.
I can recommens lookig at the highway library: https://github.com/google/highway
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Thanks for the added context on the builds! As "foreign" BW player and fellow speech processing researcher, I agree shallow contextual biasing should help. While not difficult to implement, most generally available ASR solutions don't make it easy to use. There's a PR in ctranslate2 implementing the same feature so that it could be exposed in faster-whisper: https://github.com/OpenNMT/CTranslate2/pull/1789
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xsimd
C++ wrappers for SIMD intrinsics and parallelized, optimized mathematical functions (SSE, AVX, AVX512, NEON, SVE))
Thanks, that's an important caveat!
> Meanwhile xsimd (https://github.com/xtensor-stack/xsimd) has the feature level as a template parameter on its vector objects
That's pretty cool because you can write function templates and instantiate different versions that you can select at runtime!
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Simd
C++ image processing and machine learning library with using of SIMD: SSE, AVX, AVX-512, AMX for x86/x64, NEON for ARM. (by ermig1979)
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kfr
Fast, modern C++ DSP framework, FFT, Sample Rate Conversion, FIR/IIR/Biquad Filters (SSE, AVX, AVX-512, ARM NEON)
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DirectXMath
DirectXMath is an all inline SIMD C++ linear algebra library for use in games and graphics apps
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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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MIPP
Portable wrapper for SIMD and vector instructions written in C++11. Compatible with NEON, SSE, AVX, AVX-512 and SVE (length specific).
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VectorizedKernel
Running GPGPU-like kernels on CPU with auto-vectorization for SSE/AVX/AVX512 SIMD Architectures
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
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++ Avx discussion
C++ Avx related posts
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C Is Not Suited to SIMD
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Expressive Vector Engine – SIMD in C++
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hello, maybe i am back for a while
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SIMD Everywhere Optimization from ARM Neon to RISC-V Vector Extensions
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The Case of the Missing SIMD Code
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Numerical Computing in C++ Discussion
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Similarity Measures on Arm SVE and NEON, x86 AVX2 and AVX-512
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coderabbit.ai | 19 Apr 2025
Index
What are some of the best open-source Avx projects in C++? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | thorium | 5,636 |
| 2 | highway | 4,553 |
| 3 | CTranslate2 | 3,736 |
| 4 | xsimd | 2,348 |
| 5 | Simd | 2,140 |
| 6 | kfr | 1,723 |
| 7 | DirectXMath | 1,637 |
| 8 | Vc | 1,479 |
| 9 | eve | 1,174 |
| 10 | hlslpp | 841 |
| 11 | std-simd | 606 |
| 12 | MIPP | 499 |
| 13 | MandelbrotSSE | 89 |
| 14 | peakperf | 67 |
| 15 | VectorizedKernel | 9 |
| 16 | ThinkingInSimd | 4 |
| 17 | fpng-java | 2 |
| 18 | fractals | 1 |
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