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#avx-512

Parsing IP addresses in C# at crazy speeds

Lobsters Hottest · 2026-08-20 Cached

The article explains an optimized method for parsing IPv4 addresses in C# using AVX-512 SIMD instructions, leveraging .NET 10's masked loads to achieve high performance with UTF-16 strings.

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#avx-512

Spent two weeks on a kernel that benchmarked 29x faster. End to end it's maybe 6-10%, and it's not even wired in yet.

Reddit r/LocalLLaMA · 2026-07-24

The author optimized a matmul kernel for BitNet's ternary models on CPU, achieving 29x speedup in isolation, but found that the model is memory-bound, resulting in only 6-10% end-to-end gain. The inference engine is available as open-source.

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#avx-512

Faster KNN search in Manticore: 2-pass HNSW, batched distances, and AVX-512

Hacker News Top · 2026-06-26 Cached

Manticore's KNN search gets up to 29% faster with 2-pass HNSW, batched distances, compile-time distance specialization, and AVX-512 support.

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#avx-512

Accelerating std::copy_if using SIMD

Lobsters Hottest · 2026-05-26 Cached

Blog post analyzing and implementing a SIMD-accelerated version of std::copy_if using AVX-512 instructions on AMD Zen 4, with performance analysis and comparisons to compiler auto-vectorization.

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#avx-512

A cache-friendly IPv6 LPM with AVX-512 (linearized B+-tree, real BGP benchmarks)

Hacker News Top · 2026-04-20 Cached

planb-lpm is a portable, MIT-licensed C++17 library implementing efficient IPv6 longest-prefix-match (LPM) using a linearized B+-tree with AVX-512 SIMD, featuring dynamic FIB support, Python bindings, and comprehensive benchmarking against real BGP data.

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