Top all-time · #9328
stoppels.ch
Personal blog · stoppels.chsystemsprogramming
stoppels.ch is a personal blog at stoppels.ch about systems and programming. Since 2022, 8 different Hacker News readers have linked it 22 times, most often “I/O is no longer the bottleneck? (2022)”. It is still writing: the last post was on 2026-10-22, and you can follow it by feed.
Too few sampled comments (3) to say how often HN recommends it.?
Why HN links it
A polling site where visitors vote on whether Hacker News' challenges for AI have been met, with each challenge linked to the HN comment that posed it. Commenters discuss the voting and the site's lack of discussion features.
Summarised by Claude from a sample of 3 HN comments that link here. Each comment is marked recommending, critical or neutral (citing without judging); how this works.
Most-linked posts?
- I/O is no longer the bottleneck? (2022)2 people · 2 mentions · first linked 2022-11-27
- Stop Searching for Shared Libraries2 people · 2 mentions · first linked 2022-08-04
What Hacker News says?
Instead of doing 4 comparisons against each character `\n`, `\r`, `;` and `"` followed by 3 or operations, a common trick is to do 1 shuffle, 1 comparison and 0 or operations. I blogged about this trick: https://stoppels.ch/2022/11/30/io-is-no-longer-the-bottlenec... (Trick 2) Edit: they do make use of ternary logic to avoid one or operation, which is nice. Basically (a | b | c) | d is computed using `vpternlogd` an…
Comment linking /2022/11/30/io-is-no-longer-the-bottleneck-part-2.html
on “21 GB/s CSV Parsing Using SIMD on AMD 9950X”Submitted Vote on which of Hacker News' challenges for AI have been met as a story · 202 points
HN discussionAVX2 is pretty much ubiquitous, the implementation above is only SSE2. I wrote a blog post with the main AVX2 tricks [1] which includes how to deal with repeated white space when counting words [1] https://stoppels.ch/2022/11/30/io-is-no-longer-the-bottlenec...
Comment linking /2022/11/30/io-is-no-longer-the-bottleneck-part-2.html
on “Unix core utilities implemented in Haskell”Submitted Shared Libraries as Executables as a story · 125 points
HN discussionI blogged about this when I stumbled up on it the first time: https://stoppels.ch/2022/11/30/io-is-no-longer-the-bottlenec... "Trick 2: Creating masks efficiently". It's pretty neat.
Comment linking /2022/11/30/io-is-no-longer-the-bottleneck-part-2.html
on “Scan HTML faster with SIMD instructions – Chrome edition”Submitted Show HN: Tar-minefield shows where tar implementations disagree as a story · 7 points
HN discussionThis site has a real lost opportunity. One of the challenges it issues is for a computer-generated painting to be difficult to tell apart from human artists' work: https://stoppels.ch/goalposts/c/11050960.html Visiting that page ought to show me an example artwork or two so I can make up my own mind. The website is merely a polling ststion (a sort of popularity contest) and unfortunately lacks any discussion capabil…
Comment linking /goalposts/c/11050960.html
on “Vote on which of Hacker News' challenges for AI have been met”Submitted I/O is no longer the bottleneck? (2022) as a story · 5 points
HN discussionI've updated the site and wrote a blog post here: https://stoppels.ch/2026/10/03/wake-me-up-when-ai-can.html
Comment linking /2026/10/03/wake-me-up-when-ai-can.html
on “Vote on which of Hacker News' challenges for AI have been met”Submitted Wake me up when AI can as a story · 4 points
HN discussionSo I take it that some people are voting "No" on things just to troll / ostrich out of reality? Like, who's still denying that AI can "write software" ( https://stoppels.ch/goalposts/?c=13650937 ) or pass the turing test ( https://stoppels.ch/goalposts/?c=11255120 )?
Comment linking /goalposts/?c=11255120
on “Vote on which of Hacker News' challenges for AI have been met”Submitted I/O is no longer the bottleneck? as a story · 3 points
HN discussionYes. One of my comments is in there [0] and is basically: "AI still hasn't passed a proper Turing test. A proper Turing test is 1 hour or more. Has any AI passed it?" How do you answer that? "'Yes', AI has NOT passed a proper Turing test", or "'Yes', AI has passed a proper Turing test". My comment doesn't actually make any prediction to judge, it's just an observation and an argument. [0]: https://stoppels.ch/goalpo…
Comment linking /goalposts/?c=38757769
on “Vote on which of Hacker News' challenges for AI have been met”Submitted Multi-Interpretable Tarballs as a story · 2 points
HN discussionHeh, there's one of mine: https://stoppels.ch/goalposts/?c=39727943 "GPT-4 looks at original ASCII art of a foot, not copied from the web, and says it is a foot." The vote is currently 64% yes, 18% no. Just now I asked Opus 5.5 to generate an ASCII art foot, and it did a passable job. It's not great, but it's a foot. Then I pasted it into ChatGPT (whatever they're serving to the free tier by default, which seems to…
Comment linking /goalposts/?c=39727943
on “Vote on which of Hacker News' challenges for AI have been met”Submitted I/O still is the bottleneck as a story · 2 points
HN discussionWell, I can answer this one: https://stoppels.ch/goalposts/?c=40662140 jerf, 2024: "If it could be solved with a Math Overflow-post level of effort, even from Terence Tao, it isn't what I was talking about as "high level math". "I also am not surprised by "Consider a generation function" coming out of an LLM. I am talking about a system that could solve that problem, entirely, as doing high level math. A system that…
Comment linking /goalposts/?c=40662140
on “Vote on which of Hacker News' challenges for AI have been met”Submitted Stop Searching for Shared Libraries as a story · 2 points
HN discussionAuthor here. There is a part 2 to this: https://stoppels.ch/2022/11/30/io-is-no-longer-the-bottlenec...
Comment linking /2022/11/30/io-is-no-longer-the-bottleneck-part-2.html
on “I/O is no longer the bottleneck? (2022)”Submitted Stop Searching for Shared Libraries as a story · 1 points
HN discussionFor the particular case of the 5 delimiters '\n', '.', '?', '!', and ';', it just happens to be so that you can do this as a single shuffle instruction, replacing the explicit lookup table. You can do this whenever `c & 0x0F` is unique for the set of characters you're looking for. See https://stoppels.ch/2022/11/30/io-is-no-longer-the-bottlenec... for details.
Comment linking /2022/11/30/io-is-no-longer-the-bottleneck-part-2.html
on “Memchunk – SIMD-accelerated text chunking at 1 TB/s”
