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#simd

Making SIMD Code Scale to Any Vector Width

Lobsters Hottest ↗ · 2026-10-28 Cached

A technical blog post showing how to transpose vec3/vec4-style SIMD code into lane-based layouts so math operations scale beyond 4-wide XMM registers to 8- or 16-wide AVX/AVX-512 vectors, demonstrated with dot products and a CPU frustum culler on Zen 3.

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#simd

@Modular: Yesterday’s Modular community meeting is now on YouTube. Brian shares EmberJSON, his Modular Community Grant project: a…

X AI KOLs Following ↗ · 2026-10-27 Cached

Modular 社区会议录像已上线 YouTube,社区成员 Brian 展示了他的 Community Grant 项目 EmberJSON——一个受 Rust serde 启发的 Mojo 序列化框架,以及基于编译期反射和 SIMDJSON 风格索引的快速 JSON 解析器,并预告了关于新 Max 许可证的直播 Q&A。

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#simd

Stalwart v1.0: The Fastest Mail Server on the Planet

Lobsters Hottest ↗ · 2026-10-26 Cached

Stalwart v1.0 is the first stable release of a Rust-based mail and collaboration server (JMAP, IMAP, POP3, SMTP, CalDAV, CardDAV, WebDAV) after five years of development, focusing on major performance gains via SIMD/SWAR optimizations and a stable database schema.

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#simd

SIMD-accelerated computer vision on a $2 microcontroller

Hacker News Top ↗ · 2026-10-25 Cached

作者为 2 美元的 ESP32-S3 微控制器编写了利用 128 位 SIMD 指令加速的 FAST 特征检测器,性能约为参考实现的两倍,处理 QVGA 帧约需 6ms,并顺带开发了自用的寄存器分配器 basm。

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#simd

ZXC: Lossless compression built for ultra-fast decode

Lobsters Hottest ↗ · 2026-10-14 Cached

ZXC 0.15.0 正式发布,这是一款面向“一次压缩、多次解压”场景的无损压缩库 libzxc,采用 C 编写,解压速度可达每秒数 GB,其各级别的解码速度均为 LZ4 的 1.5–2.8 倍,且输出体积相等或更小。

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#simd

Pg_vectorsearch: An index that is faster than pgvector's IVFFlat and HNSW

Hacker News Top ↗ · 2026-10-14 Cached

Timescale 开源了 pg_vectorsearch,一个 PostgreSQL 扩展,其 PRISM 索引在查询和建索引速度上均优于 pgvector 的 IVFFlat 和 HNSW,支持 RaBitQ 量化、SIMD 优化和动态更新。

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#simd

Accelerating the Zig Tokenizer (with AVX-512)

Lobsters Hottest ↗ · 2026-10-13 Cached

Niles Salter’s talk introduces how to use SIMD data parallelism and bit manipulation primitives (CTZ, TZCNT, etc.) to accelerate a Zig tokenizer, achieving a throughput of 820 MB/s, and explores the potential for further speedups with AVX-512.

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#simd

Safe SIMD in Rust, even on the inside

Hacker News Top ↗ · 2026-10-10 Cached

Sergey 'Shnatsel' Davidoff explains how Rust's SIMD abstractions can now be made safe on the inside, leveraging Rust 1.87's target_feature tracking and CPU feature tokens to eliminate pervasive unsafe blocks around SIMD intrinsics while keeping a+b ergonomics.

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#simd

@obie: Oh yeah! Been wanting this for awhile

X AI KOLs Following ↗ · 2026-10-09 Cached

Anton Zhiyanov (@ohmypy) 报道 SQLite 核心团队正在开发 Vec1——SQLite 原生向量搜索(ANN)功能,支持欧氏(L2)与余弦距离,并使用 SIMD 加速向量运算;该功能已基本完成,仅剩测试改进等工作。

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#simd

Vectorized CLZ and CTZ

Lobsters Hottest ↗ · 2026-10-09 Cached

一篇技术博客,介绍如何利用浮点数指数相当于对数这一特性,用 AVX2 浮点指令实现可向量化的 clz(前导零计数)和 ctz(尾随零计数)多播(polyfill),并在 Haswell/Alder Lake 上给出优于标量版本的性能数据。

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#simd

Replacing vector databases with SQLite and SIMD hypervectors in under 1.2GB VRAM (Hillock)

Reddit r/LocalLLaMA ↗ · 2026-10-03

Hillock 0.8 is an open-source tool that replaces vector databases for local RAG using SQLite relational facts and 10,000-dimensional bit-packed hypervectors with SIMD/popcount gating, blocking hallucinated answers before token generation under 1.2GB VRAM.

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#simd

Memory-Safe WebP Decoding

Hacker News Top ↗ · 2026-10-03 Cached

Halide introduces wpd, a Rust-based WebP decoder that is memory-safer and significantly faster than libwebp, with up to 3.19x multi-threaded performance gains and near-full feature parity.

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#simd

The state of SIMD in Rust in 2026

Lobsters Hottest ↗ · 2026-09-26 Cached

The article surveys the state of SIMD support in Rust in 2026, discussing advancements in SIMD libraries and implementation details.

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#simd

Platform-independent SIMD in Go

Lobsters Hottest ↗ · 2026-09-24 Cached

Go introduces experimental SIMD APIs to enable platform-independent SIMD operations, aiming to provide near-asm performance across different CPU architectures.

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#simd

Fearless SIMD v1.0 is here

Lobsters Hottest ↗ · 2026-09-22 Cached

Fearless SIMD v1.0 is released, offering safe and high-performance SIMD abstractions in Rust that minimize unsafe code while providing portable operations and platform intrinsics.

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#simd

Solving for faster SHA-1 collision detection

Hacker News Top ↗ · 2026-09-21 Cached

The author developed a faster Rust crate, sha1dc, for SHA-1 collision detection that runs at 68–81% of plain SHA-1 speed, which can make git pack verification twice as fast compared to existing solutions.

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#simd

Faster JSON parsing with SVE2 on ARM processors

Lobsters Hottest ↗ · 2026-09-19 Cached

The article describes how using the SVE2 SIMD instruction on ARM processors can optimize JSON parsing in the simdjson library by leveraging a character matching instruction for faster performance.

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#simd

Vectorized and performance-portable Quicksort (2022)

Hacker News Top ↗ · 2026-09-16 Cached

Google shares open-source vectorized Quicksort code that achieves 10x speedup over C++ std::sort by leveraging SIMD instructions, offering performance-portable sorting across modern CPU architectures.

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#simd

Speeding up gearhash on ARM64 (2× faster)

Hacker News Top ↗ · 2026-09-15 Cached

The article describes optimizations to the `gearhash` Rust crate, adding a NEON backend that doubles performance on ARM64 architectures, improving content-defined chunking for applications like Hugging Face's Xet client.

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#simd

Singeli: High-level interface for low-level programming

Lobsters Hottest ↗ · 2026-09-14 Cached

Singeli is a domain-specific language for high-performance programming with SIMD support, implemented in BQN and emitting C code, designed for flexible abstractions over CPU instructions.

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