kolbe

25 ms·

1. 301.▲
   by kolbe 4y ago

   HN commenters are apparently privileged for having to move to Guatemala to get by, whereas Guatemalians are refugees when they move to the US.
2. 302.▲
   by kolbe 4y ago

   Don't forget that companies easily get around this by having higher brokerage fees when the brokerage arm and market making arm have the same beneficial owners. Just do what Susquehanna does: instead of filling an order 0.05 too high,
3. 303.▲
   by kolbe 4y ago

   Tesla themselves released safety data quarterly for years. I don't know why it stopped, but internet guesses range from Tesla is a fraud to the NHTSA started to question its accuracy, and they pulled it for liability reason. Tesla actu
4. 304.▲
   by kolbe 4y ago

   What do you want them to release? What does "raw data" mean to you? Does Waymo release this raw data?
5. 305.▲
   by kolbe 4y ago

   Consensus from the two AV articles today seems to be that Tesla, despite releasing more data to the public on their FSD system, is evil, incompetent and endangering society (the data doesn't say so, but just the fact that Tesla won&#x2
6. 306.▲
   by kolbe 4y ago

   People sharing anecdotes isn't productive either. Someone talking about "almost crashes" is a terribly subjective thing. We have thousands of hours of youtube video of FSD. We have some data. And the value add of one commente
7. 307.▲
   by kolbe 4y ago

   Maybe we paid attention when our parents told us the tale of the Boy Who Cried Wolf.
8. 308.▲
   by kolbe 4y ago

   To add, if he had bothered to read the article, they say that wearing helmets is good.
9. 309.▲
   by kolbe 4y ago

   I can't take you seriously if you only cite the negatives and not the positives. There's $60k/year of fuel savings to be had here. Show why that isn't enough, rather than ignoring it.
10. 310.▲
    by kolbe 4y ago

    Explain? My experience has been that you don't need much. I've benchmarked Agner's exp, and if you have 4 calculations to do, then calling it with avx2 will be 4x faster than calling std::exp four times.
11. 311.▲
    by kolbe 4y ago

    I use it via the MKL and https://github.com/vectorclass/ I think they have very efficient pipelines.
12. 312.▲
    by kolbe 4y ago

    I think you're right, but I've passed the hacker news edit threshold. May my misinformation live on forever.
13. 313.▲
    by kolbe 4y ago

    I use Agner as well. I started up my own version for Rust specifically targeting avx512[1], but I've been hitting enough snags to where I think I'll abandon it. It's super green at the moment, and I haven't pushed it to
14. 314.▲
    by kolbe 4y ago

    I think the notion of double pumping is only in the VMOV operation. Looking at Agner[1], the rest of the instructions have similar Ops/Latency to their avx2 counterparts. [1] https://www.agner.org/optimize/instruct
15. 315.▲
    by kolbe 4y ago

    I use intrinsics by hand all the time. It's very easy to make a problem too complicated to autovectorize. And even if you do get it to autovectorizie, it's not exactly future proof against compiler changes.
16. 316.▲
    by kolbe 4y ago

    Have you been programming with the Zen 4? I bought one, and I've been using the avx512 intrinsics via C++ and Rust (LLVM Clang for both), and I've been a little underwhelmed by the performance. Like say using Agner Fog's vect
17. 317.▲
    by kolbe 4y ago

    Tesla/Musk are very convenient targets for political reasons. The most glaring one is Tesla's refusal to be a part of the UAW. Musk also is problematic because he personally has done more to help climate change than democrats, and
18. 318.▲
    by kolbe 4y ago

    Lol. If you think I think I do good things for a living, you need to tweak your algorithm. I'm just telling you the economics of it.
19. 319.▲
    by kolbe 4y ago

    So you're an part of making sure monopoly power is consolidated into the hands of an elite few? Cool. That's right up there with saving the climate, facilitating world peace, et cetera. I couldn't ever think of why chasing my
20. 320.▲
    by kolbe 4y ago

    You apparently don't understand that jobs that are actually desirable come at a huge wage discount. Sure, if you want to use your ML skills to push self-destructive ads or play in the stock market, you get a lot more money. But if you
21. 321.▲
    by kolbe 4y ago

    I have the shapton 12,000, and I'm actually pretty disappointed, but thise lee valley prices are better than what i paid at woodcraft.
22. 322.▲
    by kolbe 4y ago

    I will say that when I do the same parallelization scheme using non-avx operations, it accelerates properly and goes far faster than the avx versions. One interesting caveat is when the compiler autovectorizes non-intrinsic code, the proble
23. 323.▲
    by kolbe 4y ago

    I told you what I think he cut. I also said I don't know what that does to their revenues, but you don't either. If you buy the narrative that 80% of employees were bloat and you can cut them without impacting top line, then it wi
24. 324.▲
    by kolbe 4y ago

    Unclear, but the sources I've read say that's just an Intel issue. https://www.phoronix.com/review/amd-zen4-avx512/6
25. 325.▲
    by kolbe 4y ago

    I can only give you some guesses, but I think there's some false sharing type of bug going on. There's also an issue with the fact that LLVM hasn't released a target for my CPU yet (I use a Zen 4), and who knows what bugs are
26. 326.▲
    by kolbe 4y ago

    I'm in the middle of a rewrite of my finance analytics library in Rust. I chose it for all the compelling reasons: speed, safety and a great package manager. About 2 weeks in, I hit a blocker, where the most performance critical layer
27. 327.▲
    by kolbe 4y ago

    My loose guesstimate is that Elon has cut $2-3bn in expenses so far. I don't know the revenue hit yet, but $1bn in interest expense with $2.6bn in cash flows seems entirely sustainable
28. 328.▲
    by kolbe 4y ago

    Hedge Funds were more or less created for the express purpose of getting around restrictions that traditional asset management structures place on fund usage. But yes, Hedge Funds, Private Equity, Venture Capital and Family Offices can basi
29. 329.▲
    by kolbe 4y ago

    He did answer. He said if NASA says so, then it's so.
30. 330.▲
    by kolbe 4y ago

    An important distinction is that if you are an asset manager (i.e. gambler with other people's money), you aren't allowed on traditional betting platforms--only SEC and CFTC approved ones. Now you can bet on political outcomes wit