oconnor663

5 ms·

1.
by oconnor663 28d ago
I don't know anything about pharma, but having worked in tech and had my share of patent lawyer meetings, it sure doesn't seem like software patents are necessary at all. That said, a patent system has a lot of free parameters tha
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by oconnor663 1mo ago
> To change those percentages to 45% and 55% This seems like a fundamental misunderstanding of how this sort of watermarking works. (Either that, or I have a fundamental misunderstanding of how it works lol.) It doesn't change the p
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by oconnor663 1mo ago
If the problem is that the temperature is too low for the cut, you can just use a higher temp?
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by oconnor663 4mo ago
Several air launch systems have been tried, with limited but non-zero commercial success. The altitude and speed you get from the plane is very small compared to the total work the rocket needs to do, so the benefit in terms of "the ro
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by oconnor663 4mo ago
You can see a similar effect after the explosion at the end of last week's Starship test flight. If you look at where the flames are coming out after the first fireball clears, it kind of pancakes under its own weight there: https:&#x
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by oconnor663 4mo ago
The vehicle is designed to hold all that fuel, plus whatever payload it carries on top, but it's not designed to have heavy loads attached to it in any other way. Rockets are so intensely optimized for weight that sometimes they'r
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by oconnor663 4mo ago
https://web.archive.org/web/20120503175355/https://www.nasa.... > The percent propellant has huge implications on the ease of fabrication and robustness in achieving the engineering design (and cost).
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by oconnor663 4mo ago
I don't know anything about this particular launch, but one reason static fires sometimes load more fuel than you'd think is that the hold-down clamps aren't rated for the total thrust of the vehicle. Launch thrust is usually
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by oconnor663 4mo ago
Bear in mind that a lot of what's happening to the tiles now is deliberate experiments to see how much weight they can shave off and how many failed tiles they can survive. Given that the vehicle is routinely surviving reentry at this
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by oconnor663 4mo ago
Scott Manley pointed out that it seemed to flip in the wrong direction, with one of the grid fins passing through the plume and inducing a roll. Will be interesting to hear more about that.
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by oconnor663 4mo ago
Some weird nils don't compare equal to other nils. It's surprisingly easy to construct the weird kind by accident, because the conversion is automatic and invisible.
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by oconnor663 5mo ago
> The trap is that get_user_by_name ends up loading shared libraries from the new root filesystem to resolve the username. That's kind of horrifying. Is there a reliable list somewhere of all the functions that do that? Is that list
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by oconnor663 5mo ago
> async/await introduced entirely new categories of bugs that threads don’t have. O’Connor documents a class of async Rust deadlocks he calls “futurelocks” I didn't coin that term, the Oxide folks did: https://rfd.sh
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by oconnor663 5mo ago
Update: Having watched the whole mission, I've changed my mind about this. It was cool as hell.
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by oconnor663 6mo ago
I question the choice of the phrase "to the Moon". I get it, it's technically true, but ~100% of normal people hear that and assume it means boots on the ground. Every single time it gets mentioned, it's immediately foll
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Never Snooze a Future(jacko.io)
4 points by oconnor663 7mo ago|0 comments
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by oconnor663 7mo ago
It feels to me like Rust has been pretty big on HN ever since the 1.0 release in 2015...
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by oconnor663 7mo ago
I wouldn't read too much into pre-1.0 versions. Folks take SemVer pretty seriously, and that makes some folks reluctant to declare v1.0 even when a crate has been in use and "mostly stable" for years. There can also be compat
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by oconnor663 7mo ago
I had a similar first reaction. It seemed like the AI used some particular buzzwords and forced the initial response to be deferential: - "kindly ask you to reconsider your position" - "While this is fundamentally the right a
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by oconnor663 7mo ago
On the other hand, it's normal to have heroes, and to need to have them.
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by oconnor663 8mo ago
Infant mortality was also 1.5x higher in the US than it is today. (Depending on who we mean by "we", this difference can be much larger.) Cystic fibrosis was a death sentence. "Late 90's" barely includes the devel
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by oconnor663 8mo ago
It's mixed. You get something in the neighborhood of a 3-4x speedup with SHA-NI, but the algorithm is fundamentally serial. Fully parallel algorithms like BLAKE3 and K12, which can use wide vector extensions like AVX-512, can be substa
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by oconnor663 8mo ago
As far as I know, most CDC schemes requires a single-threaded pass over the whole file to find the chunk boundaries? (You can try to "jump to the middle", but usually there's an upper bound on chunk length, so you might need
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by oconnor663 8mo ago
It's important to think about the exact procedure you want to use for verifying something. Running with your thought experiment, let's say we publish "the root hash of the whole world" (not too far off from what Keybase
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by oconnor663 8mo ago
Another important parameter with BLAKE3 is "Do you want to use threads?" There's no one-size-fits-all answer to that question, but it's also a parameter that ~no other hash function needs. Fwiw, I think the RustCrypto ef
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by oconnor663 8mo ago
> Despite benefits, I don't actually think the memory safety really plays a role in the usage rate of parallelism. I can see what you mean with explicit things like thread::spawn, but I think Tokio is a major exception. Multithreade
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by oconnor663 8mo ago
> They aren't useful outside of "financial engineering." Without disagreeing with your overall point in 99% of cases, we did actually have a good use for pinning things in the Bitcoin blockchain when I worked at Keybase. I
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by oconnor663 8mo ago
> With C you may, if you wish, develop a big sensibility to race conditions, and stay alert. In general it is possible that C programmers have their "bugs antenna" a bit more developed than other folks. I think there are effect
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by oconnor663 9mo ago
Ehhhhhh hating on AI is also extremely popular on social media.
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by oconnor663 9mo ago
Yes I'm especially interested in what OP thinks about the overlap (or not?) between the ideas in this post and the ideas in this part of boats' post: > One could imagine an alternative design in which instead of places being un

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