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izabera

549 karma · joined June 21, 2015

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izabera··on ChatGPT and Codex usage limits merging
this argument does not make a ton of sense to me. would it be better if they were charging by the byte? that's fixed and you can measure/control how many bytes you send, but you still have little control over how many bytes you receive, or whether those bytes are useful in the first place.

likewise, suppose you buy a 1gb plan from a mobile isp, then you find a youtube tutorial that you're interested in. the nugget of information you need is 23 minutes in, but you have no way of knowing that upfront, it may not even be there. you can exert some control over how many bytes you send in the headers of the get requests to youtube, but you have little control over how youtube compresses the video you requested. also you download 2 30s ads and a sponsored segment before finding what you were looking for. unfortunately you're now out of data on your plan. do you blame your isp for their shady sales practices? is it youtube's fault? what did you pay for?

izabera··on Research carried out using NetBSD
that's one confusing title in $currentyear...
izabera··on Show HN: Bash Screensavers
they're generally pretty but they should really hide the cursor, it looks offputting in basically all cases
izabera··on The death of thread per core
the secret is to keep things ˢᵐᵒˡ
izabera··on Ask HN: Who is hiring? (October 2025)
> Unlike other apps or cookbooks, we’ll teach you the hows and whys of cooking.

this is literally like every other app or cookbook

izabera··on A safe, non-owning C++ pointer class
"is shared_ptr thread safe?" is a classic question asked thousands of times. the answer by the way is "it's as thread safe as a regular pointer"
izabera··on A safe, non-owning C++ pointer class
atomics aren't free even without contention. the slogan of the language is "you don't pay for what you don't use", and it's really not great that there's no non atomic refcount in the standard. the fact that it is default atomic has also lead people to assume guarantees that it doesn't provide, which was trivially predictable when the standard first introduced it.
izabera··on Waymo for Business
maybe some car pool services for the most frequent routes could run at regular intervals. there could even be some predefined stops to efficiently batch many people getting on and off the car pool at once
izabera··on Famous cognitive psychology experiments that failed to replicate
i'm struggling to imagine many negative effects on society caused by the specific papers in this list
izabera··on Vibe coding has turned senior devs into 'AI babysitters'
random example, may or may not come from a real situation that just happened:

    - other team opens jira ticket requesting a new type of encabulator
    - random guy who doesn't know anything of how the current encabulator system works picks up the ticket for whatever reason
    - 10 minutes later opens a 2000 line vibe coded pr with the new encabulator type and plenty of unit tests
    - assigns ticket to the person who designed the current encabulator system for review
    - encabulator system designer finds out about this ticket for the first time this way
    - "wait wtf what is this?  why are we doing any of this?  the current system is completely generic and it takes arbitrary parameters?"
    - waste an hour talking to the guy and to the team that requested this
    - explain they could just use the parameters, close pr and ticket
it's so incredibly productive
izabera··on SpikingBrain 7B – More efficient than classic LLMs
deepseek is from china and all their papers have been very well received
izabera··on Show HN: Timep – A next-gen profiler and flamegraph-generator for bash code
thanks for taking the time to make it work on my code :)
izabera··on Show HN: Timep – A next-gen profiler and flamegraph-generator for bash code
tested it on this https://github.com/izabera/cube.bash/tree/timep

i ran `source /path/to/timep.bash; timep ./cube.bash "R U R' U' R' F R2 U' R' U' R U R' F'"`

without profiling https://i.imgur.com/JE93ony.png

with profiling there's a bunch of errors but overall it's ~300x slower https://i.imgur.com/qif7Qp3.png so i'm sceptical on all the efficiency claims

izabera··on Show HN: Yet another memory system for LLMs
not trying to be a hater but how is 100mb/s high performance in 2025? that's as performant as a 20 years old hdd
izabera··on OpenAI's new open-source model is basically Phi-5
what's the problem with that? we have erotic texts dating back thousands of years, basically as old as the act of writing itself https://en.wikipedia.org/wiki/Istanbul_2461
izabera··on Ask HN: Have you ever regretted open-sourcing something?
I post a lot of silly personal code on GitHub and the vast majority of issues/pull requests I receive are completely inane and generally not remotely helpful. Things ranging from "I've added a subtle shadow effect to the title in the readme" (thought it was someone's first pr just to get started but that wasn't even the case) to "I've added support for $obscure_system_youve_never_heard_of" (well meaning but the code is now 4x longer and a maze of ifdefs so maybe you should just keep it in your branch?) to "I tried this on my extremely outdated system that's old enough to vote and it threw an error" (yes it very much will throw an error, none of this can work there and I cannot help you).

But a few people have reported certain fundamental problems with my approaches or have otherwise put in a significant amount of work to debug and fix issues, and they've been extremely helpful and I can only hope I'll get more of them in the future.

izabera··on FFmpeg devs boast of another 100x leap thanks to handwritten assembly code
ffmpeg is not too different from a microbenchmark, the whole program is basically just: while (read(buf)) write(transform(buf))
izabera··on lsr: ls with io_uring
what a "real life application workload" looks like is entirely dependent on your use case, but fio is very widely used in the storage industry

it's a good first approximation to test the cartesian product of

- sequential/random

- reads/writes

- in arbitrary sizes

- with arbitrarily many workers

- with many different backends to perform such i/o including io_uring

and its reporting is solid and thorough

implementing the same for your specific workload is often not trivial at all

izabera··on How and where will agents ship software?
> Today we’re releasing an API that gives you and your agents full-stack backends. Each backend comes with a database, a sync engine, auth tools, file storage, and presence.

this is a hosted lamp stack, we had it 20 years ago. is cpanel is not fashionable anymore?

izabera··on NativeJIT: A C++ expression –> x64 JIT (2018)
this looks convenient to use from c++, but the example code it generates is rather suboptimal (see https://godbolt.org/z/3rWceeYoW in which no normal compiler would set up and tear down a stack frame for that) so i'm guessing there isn't any support for optimisations? what's the advantage of this over just compiling + calling dlopen/LoadLibrary on the result?
izabera··on Parsing JSON in Forty Lines of Awk
did something along those lines a while ago https://github.com/izabera/j trying to keep an interface similar to jq
izabera··on 2048 with only 64 bits of state
thanks, i fixed it. it was only happening on bash 3.2 and i don't use a mac so i didn't see it. https://github.com/izabera/bitwise-challenge-2048/commit/73f...
izabera··on 2048 with only 64 bits of state
thank you i was so proud of it lmao
izabera··on Learn Makefiles
they do place themselves as an alternative to make, but imho they're entirely different and not at all comparable. make is centered around creating artefacts and not rebuilding what is already built. just is a command runner.
izabera··on Learn Makefiles
this is literally never an issue because every editor automatically uses tabs for makefiles
izabera··on LLMs pose an interesting problem for DSL designers
30 lines are always going to be easier to read/write/debug than 3000 lines, so it'll probably remain easier (for both humans and machines) to write correct code in languages that make it possible to express ideas concisely and elegantly.
izabera··on The Unreliability of LLMs and What Lies Ahead
oh boy do i have the paper for you https://proceedings.neurips.cc/paper_files/paper/2014/file/f...
izabera··on The ‘white-collar bloodbath’ is all part of the AI hype machine
what does "huge democratization of work" even mean? what world do you people live in? the current global unemployment rate on my planet is around 5% so that seems pretty democratised already?
izabera··on Why Cline doesn't index your codebase
the third point is applicable to a number of tools and systems, but who would claim that using git doubles your security surface?
izabera··on CAPTCHAs are over (in ticketing)
every time this comes up, the thread immediately gets 300 comments suggesting that everyone pays whatever amount to keep the bots at bay

twitter sells blue checks for $8/mo and it's full of bots

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