vgatherps

6 ms·

1.
by vgatherps 1y ago
Oh this is very nice, I think it was stabilized since I wrote said code.
2.
by vgatherps 1y ago
Yes, this is the case that I ran into as well. You have to zero memory before reading and/or have some crazy combination of tracking what’s uninitialized capacity or initialized len, I think the rust stdlib write trait for &mut Vec
3.
by vgatherps 1y ago
Uninitialized memory being UB isn’t an insane default imo (although it makes masked simd hard), nor is most UB. But the lack of escape hatches can be frustrating
4.
by vgatherps 1y ago
I wish that there was a useful “freeze” intrinsic exposed, even if only for primitive types and not for generic user types, where the values of the frozen region become unspecified instead of undefined. I believe llvm has one now? Iirc the
5.
by vgatherps 1y ago
https://github.com/jax-ml/jax
6.
by vgatherps 2y ago
True, we absolutely couldn’t allow a place that people can voluntarily participate in to say things to exist without a governing body deciding what is and isn’t allowed to be said
7.
by vgatherps 2y ago
“Financial derivatives” and “downside is limited” should never appear in the same sentence without strong conditions on what sorts of derivatives/ combos of them
8.
by vgatherps 2y ago
Jane Street is one of the slower market making firms and generates a significant share of revenue from being everywhere on everything (MUCH easier said than done). You want to trade some Canadian lumber ETF? Jane Street will be there. Some
9.
by vgatherps 2y ago
People who don't want to X can always find a reason not to, for any given X. Somebody might even talk about how they want to do X, and go through many of the motions and preparations, but always find some reason at the end to back out.
10.
by vgatherps 3y ago
How is > How do you justify using AI for your game art? I have thought about this, and couldn't justify it. I also know that I hold on to morals almost to a stubborn degree. different from > How do you justify using Blender for
11.
by vgatherps 3y ago
People who have some understanding of study design and data collection would be in a much better spot to understand and interpret day-to-day news / “information flood” than those who have done a lot of calculus-based probability. You c
12.
by vgatherps 3y ago
This is not true, you can run non-send futures using Tokio: https://docs.rs/tokio/latest/tokio/task/struct.LocalSet.html
13.
by vgatherps 3y ago
I mean yeah that's the point I made? FWIW, trading firm noncompetes are almost always compensated with the base salary and they're still blanket applied. A major contributor is that the employer is only paying a fraction of the tr
14.
by vgatherps 3y ago
> I feel like the solution is to force the company to pay full TC (average of previous years + inflation or something?) for the duration of the noncompete. It absolutely has to be something like this at a bare minimum. The whole "We
15.
by vgatherps 3y ago
Most tech work is not particularly novel at a technical level. Very few services have any sort of massive advantage in the technical IP. Some of them might have advantage in customer/data analytics, but most advantage is in the idea it
16.
by vgatherps 3y ago
Lack of noncompetes is the reason that most trading firms have opened offices everywhere except SF
17.
by vgatherps 3y ago
> So the solution is that employees should only be able to work for one employer in their career? Yes, I very definitely made this anything remotely resembling this argument in my post. Regardless, it would be a beyond-amazing deal for m
18.
by vgatherps 3y ago
Quant firms at least are one of the few places where noncompetes can make sense. It's an extremely IP sensitive industry with stupendously high pay where the employee is going to someone probably competing very directly with you, for t
19.
by vgatherps 3y ago
It would probably be even worse today. Dynamically discovering ILP “just works” even as memory gets slower and slower and slower. A CPU today can execute hundreds of instructions and many predicted branches ahead of a slow load. It would be
20.
by vgatherps 3y ago
Beyond the fact that just telling people to do so is ineffective, my experience is that most people have a very poor idea of what is and isn't calorie dense (I've been there!), how many calories they consume in snacks, or how to e
21.
by vgatherps 3y ago
Don't forget meaningful regulations and legal requirements placed upon these parties
22.
by vgatherps 3y ago
Invisible can equally mean “actually invisible” but often means “we told the people shouting and screaming about this risk to shut up”
23.
by vgatherps 3y ago
This is how most asset trading works, but outside of crypto these third parties are actually trustworthy
24.
by vgatherps 3y ago
I know plenty of Jane Street (and other “prestigious” quant firm people). They’re generally smart, admittedly tend towards overachievers, and are otherwise relatively normal people. They’re not a class of god tier humans sitting above every
25.
by vgatherps 3y ago
The major hft firms do pay well but new grad pay is often inflated in a few ways - signing bonus is included in “total” as if it’s recurring, first-year guarantees/targets are treated as recurring total, “this pays out over 4 years” is
26.
by vgatherps 3y ago
Statistical arbitrage trades don't tend to be like "yolo long these great stocks today" unless you have access to information very few other players do (and even then you try and only gain exposure to the factors you are info
27.
by vgatherps 3y ago
Edit: Someone pointed out this might be a VC trap, which would explain why there's such breathless writing about a bogus model with no actual results included. This is a whopper of ai-will-totally-take-over-trading nonsense paper, you&
28.
by vgatherps 3y ago
Erlang is built for easily achieving fairly low and reliable latencies, with easy distribution/concurrency primitives, and building highly reliable systems. It’s not very good for “make packet in to packet out as fast as possible at th
29.
by vgatherps 3y ago
This is almost certainly incorrect, unless it’s using a very stretched definition of “hft” and using microseconds to mean 99th% <1ms instead of say <5us (reasonably competitive software range depending on your trade). They might be fo
30.
by vgatherps 3y ago
> The proof of uncountability of real numbers starts with a process of enumerating this infinite list of infinitely long binary numbers. > How could the diagonal construction ever finish to allow a "check" of whether the res

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