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ยฉ 2025 - 2026 Nat Welch. All rights reserved.

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Daniel Lemire

@daniel_lemire@robot.villas

Performance engineering, SIMD, parsing, data structures, and computer science research.

Source: https://lemire.me/blog/feed/

Homepage: https://lemire.me

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Posts
63
Followers
3
Following
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Posts

  • simdjson 5.0 is out #SIMD #Performance #OpenSource

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    Sep 28, 2026
  • How fast can you fix a UTF-16 string in C#? #CSharp #Performance #UTF16

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    Sep 26, 2026
  • A thesis isn't enough for a PhD #Academics #Research #PhD

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    Sep 26, 2026
  • How many strings can you create per second? #Performance #Programming #ComputerScience

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    Sep 25, 2026
  • If you don't have the factories, you lose the expertise #ComputerScience #Research #Engineering

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    Sep 24, 2026
  • A summer of AI optimization #AI #Optimization #Performance

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    Sep 22, 2026
  • More than a taken branch per cycle? #ComputerScience #Performance #Research

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    Sep 21, 2026
  • The data does not show mass unemployment

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    Sep 21, 2026
  • AI is breaking the academic sorting machine #AI #Academia #Research

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    Sep 20, 2026
  • How did Apple Silicon get 50% faster in three years? #Tech #Performance #Hardware

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    Sep 19, 2026
  • Faster JSON parsing with SVE2 on ARM processors #Performance #Json #ARM

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    Sep 18, 2026
  • How did AMD Ryzen get 50% faster in two years? #Hardware #Performance #CPUs

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    Sep 18, 2026
  • How fast is C++23's std::flat_map? #Cpp #Performance #DataStructures

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    Sep 16, 2026
  • Subnormal floating-point numbers are expensive... on Intel processors #Performance #CPU #Research

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    Sep 15, 2026
  • The four-colour theorem was only the start #Math #ComputerScience #Research

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    Sep 11, 2026
  • Fear Is Not an Argument #Philosophy #Reasoning #Argumentation

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    Sep 10, 2026
  • A quick overview of atomics in C #Programming #ComputerScience #Atomics

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    Sep 9, 2026
  • AI programming: a layered model #AI #Programming #ComputerScience

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    Sep 5, 2026
  • Python sets and dictionaries can have quadratic-time performance #Python #Performance #ComputerScience

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    Sep 3, 2026
  • The new Go JSON API: twice as fast, or 1.5x slower? #GoLang #Performance #JSON

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    Aug 29, 2026
  • Java's String.indexOf can be slow (quadratic) #Java #Performance #Algorithms

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    Aug 22, 2026
  • Parsing IP addresses in C# at crazy speeds #CSharp #Performance #ComputerScience

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    Aug 19, 2026
  • Go 1.27 will make some allocations cheaper #GoLang #Performance #Optimization

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    Aug 15, 2026
  • AI programming : are you angry yet? #AI #Programming #ComputerScience

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    Aug 12, 2026
  • Profile-guided optimization in Go #GoLang #Optimization #Performance

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    Aug 9, 2026
  • How fast is C++26's std::hive? #Cpp #Performance #DataStructures

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    Aug 2, 2026
  • Memory-level parallelism: AMD is the king #Hardware #Performance #CPU

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    Jul 25, 2026
  • Does a PhD Pay Off? #PhD #Career #Research

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    Jul 24, 2026
  • From Institutions to Individuals: the White House Report on Revitalizing U.S. Scientific Leadership #Science #Research #Policy

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    Jul 22, 2026
  • Using AI to build your own software #AI #SoftwareDevelopment #Programming

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    Jul 16, 2026
  • X just gave us an interface that AI agents can use. I pointed it at my own posts. #AI #Tech #OpenSource

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    Jul 11, 2026
  • Chatting with an AI Won't Make You a Top Programmer #AI #Programming #Tech

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    Jun 21, 2026
  • Parsing JSON at compile time with C++26 static reflection #Cpp #Json #Performance

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    Jun 14, 2026
  • Sovereign #ComputerScience #Performance #Research

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    Jun 9, 2026
  • How much do amd64 microarchitecture levels help in Go? #GoLang #Performance #CPU

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    Jun 6, 2026
  • Embodied cognition and agentic AI #AI #Cognition #Research

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    May 28, 2026
  • Parsing IPv6 Addresses Crazily Fast with AVX-512 #Performance #Networking #AVX512

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    May 23, 2026
  • Only 17% of all 64-bit Integers are products of two 32-bit integers #ComputerScience #Math #Performance

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    May 22, 2026
  • SIMD-accelerated integer-to-string conversion #SIMD #Performance #Algorithms

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    May 18, 2026
  • Checking multiplication overflow #ComputerScience #Performance #Algorithms

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    May 6, 2026
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