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u320

710 karma · joined January 18, 2016

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u320··on C++ Memory Model: Migrating from x86 to ARM (2021)
Rust async semantics are complex because they need to support resumable computations on a single C-style stack. It has nothing to do with concurrency, which was already supported, but at the cost of multiple stacks (either green threads at one point or OS threads). Futures just happen to be a very prominent example of resumable computations. Generator functions is another.
u320··on Big brands keep dropping X over antisemitism; $75M loss, report estimates
Some guy posted a common neo-nazi conspiracy theory about Jews. Elon replied in approval. Apparently you did now know this, yet you come here and post that we should not talk about it.
u320··on Cats that fetch are an evolutionary mystery
They like how they sound when handled. They have fantastic hearing, so it's not a surprise that it affects how they play.
u320··on Cats that fetch are an evolutionary mystery
This is not a big mystery. Cats play for the same reason that dogs and kids do. For some reason cats vary a lot in how they play. But its no mystery why it often involves chasing something that moves. They are genetically evolved to practice hunting, because they are natural hunters.
u320··on Greg Brockman quits OpenAI
It's a foundation in Luxembourg, with a Dutch subsidiary that owns some offices in Sweden.
u320··on The push to save the Itanium architecture in Linux
Sure, but 64-bit x86 did materialize and killed Itanium, there is little reason to think it wouldn't have killed those archs too.
u320··on The push to save the Itanium architecture in Linux
HP wasn't just involved, it was their baby from the beginning. But they realized that the investment was too large and risky and Intel needed a 64-bit arch. So they partnered up.
u320··on OCaml: a Rust developer's first impressions
He left Rust long before ? was introduced.
u320··on WasmFX: Effect Handlers for WebAssembly
> Just personally, I can count on one hand the number of algorithms I've written where weird control flow was necessary to make the algorithm easier, and they were all weird shit that I expect other people to use libraries for in most cases.

Async/await or error handling is not "weird control flow". In many codebases you would have more functions that use those than not.

u320··on Apple unveils M3, M3 Pro, and M3 Max
No the default action is to do nothing (ie do not install the OS). You have to actively consent or reject.
u320··on The risk of RISC-V: What's going on at SiFive?
The RISC-V community seeing an influx of large interests, used to ARM-style architectures might create conflicts. But it is really a sign of RISC-V winning.
u320··on The risk of RISC-V: What's going on at SiFive?
EPYC was AMD, Intel's x86 successor was called EPIC.
u320··on Log is the "Pro" in iPhone 15 Pro
It doesn't really matter HOW they do it, as long as you get the advantages of float encoding (practically infinite headroom). Of course if you zoom in enough there will be something in there that uses integers, but this would be true for e.g. a floating point adder as well.
u320··on Nucor and Helion to Develop 500 MW Fusion Power Plant by 2030
No the resulting T would not react immediately. This doesn't happen in existing D-T reactors, why would it happen here where the T/D ratio orders of magnitude lower? Most atoms in a cycle will never fuse.
u320··on Nucor and Helion to Develop 500 MW Fusion Power Plant by 2030
There will be barely any D-T fusion. Neutrons from D-D is a problem they will have to manage, but they have lower energy than D-T would have.
u320··on Nucor and Helion to Develop 500 MW Fusion Power Plant by 2030
That's not how grid economics work. Transmission costs are large and rising, but that is more of a problem for intermittent sources.
u320··on Nucor and Helion to Develop 500 MW Fusion Power Plant by 2030
By making deuterium fuse with itself.
u320··on 64-bit bank balances ‘ought to be enough for anybody’?
Float can be justified where performance is more important than accuracy. Which does happen sometimes in the financial world.
u320··on 64-bit bank balances ‘ought to be enough for anybody’?
It's not really symmetric. It's not hard to imagine a situation where everyone stops believing something (a currency) is not worth anything anymore. But why would somebody believe that nothing except currency is not worth anything?
u320··on The Raft Consensus Algorithm (2015)
Paxos is a family of algorithms of which Raft is a member. You can change Raft in various ways but then it's not Raft anymore, but it can still be Paxos. So of course Paxos can "do more".
u320··on Transformers as Support Vector Machines
Transformers as toy vehicles that can turn into robots.
u320··on Spotify looked to ban white noise podcasts to become more profitable
They started to pay podcasters to publish on Spotify exclusively. E.g. Joe Rogan.
u320··on LK-99 isn’t a superconductor
In theory, we could have had a much better power grid with more transmission. The reasons we don't have nothing to do with the price of aluminium, or the resistive losses of it. It's just difficult to build large-scale infrastructure. Transmission projects typically spend longer in court than actually building them. Superconductors would not change a thing, unless it changed that.
u320··on LK-99 isn’t a superconductor
No, switching from raw aluminium to an obscure synthesised compound is not going to be worth it for a few % efficieny gain. We've had centuries of "scale up" with copper and it's still not worth it.
u320··on LK-99 isn’t a superconductor
REBCO was a bigger deal for fusion than LK99 would have been. We can't make tokamaks smaller, the magnetic forces would rip them apart.
u320··on Electronic Structure of LK-99
Why would it be cheaper? The actual rails is a pretty small part of constructing high speed rail, isn't it? Especially on problematic terrain.
u320··on A room-temperature superconductor? New developments
Do you have a source for this?
u320··on A room-temperature superconductor? New developments
It would make fusion experiments cheaper, but not more successful.
u320··on Huazhong University demonstrates LK-99 diamagnetism
You could put nuclear reactors in the middle of the desert today (ignoring cooling for now). The reasons we don't typically do it has nothing to do with resistance.
u320··on Origin of correlated isolated flat bands in LK99
Transmission losses aren't really a big problem for the grid. Cost, geopolitics, and resiliency matters more. I don't expect superconductors to change much here.
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