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10:35 · Sep 22, 2026 · Tue
Daniel Lemire's blog
A summer of AI optimization

Telegraph | source
Telegraph
A summer of AI optimization
I maintain and comaintain several open-source libraries. Some of them are widely used: ada parses URLs in Node.js, fast_float parses numbers in GCC’s standard library and in Chromium, simdjson parses JSON in Node.js, simdutf validates and transcodes Unicode…
02:40 · Sep 22, 2026 · Tue
Daniel Lemire's blog
More than a taken branch per cycle?

Telegraph | source
(author: Antonio Badia)
Telegraph
More than a taken branch per cycle?
Our processors can execute many instructions per cycle; they are superscalar. But not all instructions are equal. Branches are particularly tricky. A branch occurs often when you use an if-then clause or a loop. We distinguish between a taken branch and a…
23:09 · Sep 21, 2026 · Mon
Daniel Lemire's blog
The data does not show mass unemployment

If AI is causing mass unemployment among software developers, it is not showing up in the data yet.

The USA had more software developers as a percentage of the population in 2025 than in 2021.

On average salaries are slightly up (average of 148k$ a year). The 90th percentile is up from 2021 (215k$US a year).

source
05:49 · Sep 21, 2026 · Mon
Daniel Lemire's blog
AI is breaking the academic sorting machine

Telegraph | source
Telegraph
AI is breaking the academic sorting machine
I see the mathematicians panicking at what we can do with agentic AI. Let us be clear on what we are talking about. In a few weeks, someone who is not a high-level mathematician can, with AI, produce the equivalent of a good PhD thesis in math. I could see…
21:18 · Sep 20, 2026 · Sun
https://davidlattimore.github.io/posts/2026/09/18/benchmarking-wild-vs-mold.html
08:42 · Sep 20, 2026 · Sun
Measure internet censorship. Contribute to the largest open dataset https://ooni.org/install
ooni.org
Install OONI Probe
Measure internet censorship. Contribute to the world's largest open dataset on internet censorship. Install OONI Probe on Desktop and Mobile platforms
02:18 · Sep 20, 2026 · Sun
Chips and Cheese
Qualcomm’s Adreno X2 GPU
#ChipAndCheese

Telegraph | source
(author: Chester Lam)
Telegraph
Qualcomm’s Adreno X2 GPU
Integrated GPUs have become a crucial component in recent laptop chips, thanks to a push for better graphics performance in ultraportable devices. AMD and Intel have both launched impressive iGPU implementations in recent years. Qualcomm’s laptop push needs…
ChipAndCheese
00:15 · Sep 20, 2026 · Sun
Daniel Lemire's blog
How did Apple Silicon get 50% faster in three years?

source
Daniel Lemire's blog
How did Apple Silicon get 50% faster in three years?
How did Apple Silicon get 50% faster in three years?
Recently, I looked at how AMD made its chips 50% faster within a span of two years, in How did AMD Ryzen get 50% faster in two years? Many people asked me to cover Apple processors. So let us go. Consider the base Apple Silicon chips: M2 (2022), M3 (2023)…
05:48 · Sep 19, 2026 · Sat
Daniel Lemire's blog
Faster JSON parsing with SVE2 on ARM processors

Telegraph | source
Telegraph
Faster JSON parsing with SVE2 on ARM processors
ARM processors, like those in your phone, have instructions capable of processing several elements at once (SIMD). These instructions are called NEON. But many newer processors have a different SIMD extension called SVE. The latest ARM processors have SVE2.…
01:31 · Sep 19, 2026 · Sat
Daniel Lemire's blog
How did AMD Ryzen get 50% faster in two years?

source
Daniel Lemire's blog
How did AMD Ryzen get 50% faster in two years?
How did AMD Ryzen get 50% faster in two years?
People still tell me that CPUs are boring. That nothing much happens anymore. Let us look at AMD Ryzen 7 processors from 2022 to 2024: the 5800X3D (Zen 3), the 7800X3D (Zen 4) and the 9800X3D (Zen 5). They are comparable 8-core chips with 3D V-Cache. I have…
19:35 · Sep 18, 2026 · Fri
Easton Man's Channel
https://issues.chromium.org/u/1/issues/563087658 给chromium报了个bug，全民vibe时代还是有好处的
Raise 到 P0 了😂
18:55 · Sep 18, 2026 · Fri
https://issues.chromium.org/u/1/issues/563087658

给chromium报了个bug，全民vibe时代还是有好处的
17:30 · Sep 18, 2026 · Fri
https://zed.dev/blog/delta-public-beta
zed.dev
Replace PRs with Delta – Now in Public Beta
Replace PRs with Delta – Now in Public Beta
From the Zed Blog: Delta is now in public beta. Replacing pull requests is our first step toward replacing GitHub.
15:45 · Sep 18, 2026 · Fri
Jemalloc 5.4.0 https://github.com/jemalloc/jemalloc/releases/tag/5.4.0
GitHub
Release 5.4.0 · jemalloc/jemalloc
Release 5.4.0 · jemalloc/jemalloc
This release contains over 160 commits, focusing on the technical debts
cleaning including refactorings, bug fixes, test coverage improvement, and
option cleanups. The release also includes portab...
04:29 · Sep 17, 2026 · Thu
Daniel Lemire's blog
How fast is C++23’s std::flat_map?

source
Daniel Lemire's blog
How fast is C++23’s std::flat_map?
How fast is C++23’s std::flat_map?
C++23 added a new type to the standard library: std::flat_map. There is also a std::flat_set and other variants, but let me focus on std::flat_map. A flat map is a sorted vector of keys next to a vector of values. A query is a binary search over the sorted…
20:57 · Sep 15, 2026 · Tue
Daniel Lemire's blog
Subnormal floating-point numbers are expensive… on Intel processors

source
Daniel Lemire's blog
Subnormal floating-point numbers are expensive… on Intel processors
Subnormal floating-point numbers are expensive… on Intel processors
We represent floating-point numbers using the IEEE standard. For very small numbers, the standard uses special subnormal numbers. Unfortunately, they have a reputation of making operations slow. Thus video game programmers and machine learning specialists…
19:32 · Sep 15, 2026 · Tue
https://bbenchoff.com/pages/OrthoRoute.html
Benchoff Design Portfolio
OrthoRoute
OrthoRoute
OrthoRoute: GPU-Accelerated PCB Autorouter
01:55 · Sep 15, 2026 · Tue
属于CYY自己的世界
Why pointer is faster than reference

source
(author: Yangyu Chen)
01:25 · Sep 14, 2026 · Mon
属于CYY自己的世界
Why reference is faster than pointer, How ISA improve this

source
(author: Yangyu Chen)
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