highway
sort-research-rs
highway | sort-research-rs | |
---|---|---|
66 | 47 | |
3,645 | 292 | |
1.8% | - | |
9.8 | 9.0 | |
6 days ago | 5 days ago | |
C++ | Rust | |
Apache License 2.0 | Apache License 2.0 |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
highway
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Llamafile 0.7 Brings AVX-512 Support: 10x Faster Prompt Eval Times for AMD Zen 4
The bf16 dot instruction replaces 6 instructions: https://github.com/google/highway/blob/master/hwy/ops/x86_12...
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JPEG XL and the Pareto Front
[0] for those interested in Highway.
It's also mentioned in [1], which starts off
> Today we're sharing open source code that can sort arrays of numbers about ten times as fast as the C++ std::sort, and outperforms state of the art architecture-specific algorithms, while being portable across all modern CPU architectures. Below we discuss how we achieved this.
[0] https://github.com/google/highway
[1] https://opensource.googleblog.com/2022/06/Vectorized%20and%2..., which has an associated paper at https://arxiv.org/pdf/2205.05982.pdf.
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Gemma.cpp: lightweight, standalone C++ inference engine for Gemma models
Thanks so much!
Everyone working on this self-selected into contributing, so I think of it less as my team than ... a team?
Specifically want to call out: Jan Wassenberg (author of https://github.com/google/highway) and I started gemma.cpp as a small project just a few months ago + Phil Culliton, Dan Zheng, and Paul Chang + of course the GDM Gemma team.
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From slow to SIMD: A Go optimization story
C++ users can enjoy Highway [1].
[1] https://github.com/google/highway/
- GDlog: A GPU-Accelerated Deductive Engine
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Designing a SIMD Algorithm from Scratch
At that point it is better to have some kind of DSL that should not be in the main language, because it would target a much lower level than a typical program. The best effort I've seen in this scene was Google's Highway [1] (not to be confused with HighwayHash) and I even once attempted to recreate it in Rust, but it is still distanced from my ideal.
[1] https://github.com/google/highway
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SIMD Everywhere Optimization from ARM Neon to RISC-V Vector Extensions
Interesting, thanks for sharing :)
At the time we open-sourced Highway, the standardization process had already started and there were some discussions.
I'm curious why stdlib is the only path you see to default? Compare the activity level of https://github.com/VcDevel/std-simd vs https://github.com/google/highway. As to open-source usage, after years of std::experimental, I see <200 search hits [1], vs >400 for Highway [2], even after excluding several library users.
But that aside, I'm not convinced standardization is the best path for a SIMD library. We and external users extend Highway on a weekly basis as new use cases arise. What if we deferred those changes to 3-monthly meetings, or had to wait for one meeting per WD, CD, (FCD), DIS, (FDIS) stage before it's standardized? Standardization seems more useful for rarely-changing things.
1: https://sourcegraph.com/search?q=context:global+std::experim...
2: https://sourcegraph.com/search?q=context:global+HWY_NAMESPAC...
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Permuting Bits with GF2P8AFFINEQB
Thanks for the link. We were previously using GFNI for bit reversal and 8-bit shifts, and I just extended that to our 8-bit BroadcastSignBit (https://github.com/google/highway/pull/1784).
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Six times faster than C
You could study Google's Highway library [1].
[1] https://github.com/google/highway
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AMD EPYC 97x4 “Bergamo” CPUs: 128 Zen 4c CPU Cores for Servers, Shipping Now
Runtime feature detection need not be rare nor hard, it's a few dozen lines of boilerplate. You can even write your code just once: see https://github.com/google/highway#examples.
sort-research-rs
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The Rust Calling Convention We Deserve
If you want a particularity cursed example, I've recently called Go code from Rust via C in the middle, including passing a Rust closure with state into the Go code as callback into a Go stdlib function, including panic unwinding from inside the Rust closure https://github.com/Voultapher/sort-research-rs/commit/df6c91....
- Driftsort: An efficient, generic and robust stable sort implementation
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Out-of-bounds read and write in the glibc's qsort()
See also https://github.com/Voultapher/sort-research-rs/blob/main/wri.... Discussion at https://news.ycombinator.com/item?id=37781612
- Fast, small, robust: pick three. Introducing a novel branchless partition impl
- A performance analysis of Intel's x86-simd-sort
- sort-research-rs/writeup/intel_avx512/text.md at main · Voultapher/sort-research-rs
- Fast, small, robust: pick three. Introducing a novel branchless partition implementation.
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Branchless Lomuto Partitioning
There was a recent post by Voultapher from the sort-research-rs project on Branchless Lomuto Partitioning
https://github.com/Voultapher/sort-research-rs/blob/main/wri...
Discussion here:
https://news.ycombinator.com/item?id=38528452
This post by orlp (creator of Pattern-defeating Quicksort and Glidesort) was linked to in the above post, and I found both to be interesting.
- A novel branchless partition implementation
- Fast, small, robust: Introducing a novel branchless partition implementation
What are some alternatives?
xsimd - C++ wrappers for SIMD intrinsics and parallelized, optimized mathematical functions (SSE, AVX, AVX512, NEON, SVE))
tock - A secure embedded operating system for microcontrollers
Vc - SIMD Vector Classes for C++
ruduino - Reusable components for the Arduino Uno.
swup - Versatile and extensible page transition library for server-rendered websites 🎉
fluxsort - A fast branchless stable quicksort / mergesort hybrid that is highly adaptive.
DirectXMath - DirectXMath is an all inline SIMD C++ linear algebra library for use in games and graphics apps
glidesort - A Rust implementation of Glidesort, my stable adaptive quicksort/mergesort hybrid sorting algorithm.
riscv-v-spec - Working draft of the proposed RISC-V V vector extension
quadsort - Quadsort is a branchless stable adaptive mergesort faster than quicksort.
jpeg-xl
rotate - A collection of array rotation algorithms.