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← Understanding how a modern CPU executes code is a few months of work,…
17 connected korrents · 14 moments from 18 Dec 2023 to 19 Sept 2026.
Everything filed under software performance
software performance
Everything filed under Python
Python
Everything filed under coding agents
coding agents
Everything filed under compilers
compilers
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hiring
Everything filed under AI and jobs
AI and jobs
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scaling laws
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agency Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Read this korrent: Understanding how a modern CPU executes code is a few months of work, not a four-year degree, and it should be ordinary equipment for a software engineer. Understanding how a modern CPU executes code is a few months of work, not a four-year degree, and it should be ordinary equipment for a software engineer. Last stated 2 months ago
26 Aug 2026
CM
Casey Muratori — holds since 2026-08-26 — tap for who they are
Same subject: Source code in any language tells you nothing about what the CPU is actually asked to do; only the compiler's assembly output does, and reading it is a skill every serious programmer should have. — tap to centre the map on it Source code in any language tells you nothing about what the CPU is actually asked to do; only the compiler's assembly output does, and reading it is a skill every serious programmer should have. Last stated 2 months ago
26 Aug 2026
CM
Casey Muratori — holds since 2026-08-26 — tap for who they are
Same subject: You can teach somebody to be a really good AI developer in a few months, but you cannot teach them a computer science degree in three — so hire for the fundamentals. — tap to centre the map on it You can teach somebody to be a really good AI developer in a few months, but you cannot teach them a computer science degree in three — so hire for the fundamentals. Last stated 3 months ago
15 Jul 2026
DH
Dex Horthy — holds since 2026-07-15 — tap for who they are
Same subject: It will take a generation for new software to replace old software, and people will still be employed writing code in 10 years. — tap to centre the map on it It will take a generation for new software to replace old software, and people will still be employed writing code in 10 years. Last stated a month ago
19 Sept 2026
TB
Thorsten Ball — holds since 2026-09-19 — tap for who they are
Same subject: The current ease of building software with AI will be seen as normal and commonplace within 12 to 24 months, though few realize it yet. — tap to centre the map on it The current ease of building software with AI will be seen as normal and commonplace within 12 to 24 months, though few realize it yet. Last stated 3 months ago
15 Jul 2026
TY
Tynan — holds since 2026-07-15 — tap for who they are
Same subject: AI coding assistance now lets a programmer complete in a day work that used to take weeks. — tap to centre the map on it AI coding assistance now lets a programmer complete in a day work that used to take weeks. Last stated 6 months ago
26 Apr 2026
CW
Chris Wellons — holds since 2026-04-26 — tap for who they are
Same subject: Getting five years of AI progress out of one year takes roughly eight years of algorithmic progress, because the compute you would have had must be made up too. — tap to centre the map on it Getting five years of AI progress out of one year takes roughly eight years of algorithmic progress, because the compute you would have had must be made up too. Last stated 2 months ago
11 Aug 2026
RG
Ryan Greenblatt — holds since 2026-08-11 — tap for who they are
Same subject: Someone newer to the field will probably be fine by focusing on making things for real people that solve a real problem, iterating quickly, and learning to do that faster, without worrying about not knowing how to code or write a PRD. — tap to centre the map on it Someone newer to the field will probably be fine by focusing on making things for real people that solve a real problem, iterating quickly, and learning to do that faster, without worrying about not knowing how to code or write a PRD. Last stated 6 months ago
14 Apr 2026
BL
Brian Lovin — holds since 2026-04-14 — tap for who they are
Same subject: Deep compiler knowledge is still interesting, but it is no longer useful to a working engineer in any meaningful sense. — tap to centre the map on it Deep compiler knowledge is still interesting, but it is no longer useful to a working engineer in any meaningful sense. Last stated 7 months ago
11 Mar 2026
SY
Steve Yegge — holds since 2026-03-11 — tap for who they are
Same subject: "Is the page loaded?" was never a real question, and web performance only became measurable once it was broken into the distinct moments a user actually notices. — tap to centre the map on it "Is the page loaded?" was never a real question, and web performance only became measurable once it was broken into the distinct moments a user actually notices. Last stated 2 months ago
19 Aug 2026
AO
Addy Osmani — holds since 2026-08-19 — tap for who they are
Same subject: "Optimize it later" would be safe advice only if every engineer already knew how to avoid the architectural mistakes that no later optimization can remove. — tap to centre the map on it "Optimize it later" would be safe advice only if every engineer already knew how to avoid the architectural mistakes that no later optimization can remove. Last stated 2 months ago
26 Aug 2026
CM
Casey Muratori — holds since 2026-08-26 — tap for who they are
Same subject: A 300-millisecond response budget is not an achievement but an admission: 300 milliseconds is an eternity in computing, and a product pitching it shows how far the bar has fallen. — tap to centre the map on it A 300-millisecond response budget is not an achievement but an admission: 300 milliseconds is an eternity in computing, and a product pitching it shows how far the bar has fallen. Last stated 2 months ago
26 Aug 2026
CM
Casey Muratori — holds since 2026-08-26 — tap for who they are
Same subject: A profiler measures time already spent in an operation, not how much time would be saved by optimizing it. — tap to centre the map on it A profiler measures time already spent in an operation, not how much time would be saved by optimizing it. Last stated 3 years ago
18 Dec 2023
NE
Nelson Elhage — holds since 2023-12-18 — tap for who they are
Same subject: A tool's speed comes primarily from its design decisions rather than the programming language it is written in. — tap to centre the map on it A tool's speed comes primarily from its design decisions rather than the programming language it is written in. Last stated 10 months ago
29 Dec 2025
AP
Aaron Patterson — holds since 2025-12-29 — tap for who they are
Same subject: Monitoring tools that do periodic work can themselves cause the latency outliers they were installed to diagnose. — tap to centre the map on it Monitoring tools that do periodic work can themselves cause the latency outliers they were installed to diagnose. Last stated a year ago
3 Aug 2025
BG
Brendan Gregg — holds since 2025-08-03 — tap for who they are
Same subject: A language can keep changing without a Python-2-to-3 break, as long as code written under the old and the new rules can be mixed freely in one program. — tap to centre the map on it A language can keep changing without a Python-2-to-3 break, as long as code written under the old and the new rules can be mixed freely in one program. Last stated 5 months ago
20 May 2026
AR
Alice Ryhl — holds since 2026-05-20 — tap for who they are
Same subject: Python is ugly: full of superfluous instructions kept since 1987 for legacy reasons, and its __init__ offends the sensibilities to the core. — tap to centre the map on it Python is ugly: full of superfluous instructions kept since 1987 for legacy reasons, and its __init__ offends the sensibilities to the core. Last stated a year ago
12 Jul 2025
DH
David Heinemeier Hansson — holds since 2025-07-12 — tap for who they are
Same subject: Sharing code between classes via inheritance in Python tends to produce a bad experience. — tap to centre the map on it Sharing code between classes via inheritance in Python tends to produce a bad experience. Last stated 3 months ago
21 Jul 2026
JE
Julia Evans — holds since 2026-07-21 — tap for who they are
At the centre
Understanding how a modern CPU executes code is a few months of work, not a four-year degree, and it should be ordinary equipment for a software engineer.
Holds Read this korrent →
Source code in any language tells you nothing about what the CPU is actually asked to do; only the compiler's assembly output does, and reading it is a skill every serious programmer should have.
Holds
You can teach somebody to be a really good AI developer in a few months, but you cannot teach them a computer science degree in three — so hire for the fundamentals.
Holds
It will take a generation for new software to replace old software, and people will still be employed writing code in 10 years.
Holds
The current ease of building software with AI will be seen as normal and commonplace within 12 to 24 months, though few realize it yet.
Holds
AI coding assistance now lets a programmer complete in a day work that used to take weeks.
Holds
Getting five years of AI progress out of one year takes roughly eight years of algorithmic progress, because the compute you would have had must be made up too.
Holds
Someone newer to the field will probably be fine by focusing on making things for real people that solve a real problem, iterating quickly, and learning to do that faster, without worrying about not knowing how to code or write a PRD.
Holds
Deep compiler knowledge is still interesting, but it is no longer useful to a working engineer in any meaningful sense.
Holds
"Is the page loaded?" was never a real question, and web performance only became measurable once it was broken into the distinct moments a user actually notices.
Holds
"Optimize it later" would be safe advice only if every engineer already knew how to avoid the architectural mistakes that no later optimization can remove.
Holds
A 300-millisecond response budget is not an achievement but an admission: 300 milliseconds is an eternity in computing, and a product pitching it shows how far the bar has fallen.
Holds
A profiler measures time already spent in an operation, not how much time would be saved by optimizing it.
Holds
A tool's speed comes primarily from its design decisions rather than the programming language it is written in.
Holds
Monitoring tools that do periodic work can themselves cause the latency outliers they were installed to diagnose.
Holds
A language can keep changing without a Python-2-to-3 break, as long as code written under the old and the new rules can be mixed freely in one program.
Holds
Python is ugly: full of superfluous instructions kept since 1987 for legacy reasons, and its __init__ offends the sensibilities to the core.
Holds
Sharing code between classes via inheritance in Python tends to produce a bad experience.
Holds