Live data from Hacker News

Viewing profile — Tobba_

Tobba_

HN member
Joined
Tue, Nov 28, 2017, 4:23 PM UTC
HN karma
125
Public activity
68 items

About Tobba_

No profile information was provided.

Recent public activity

  1. comment
    Comment #17880223

    "swarm" means large numbers by definition, otherwise you have... well, plain-old coordination. Large numbers of F-35-sized aircraft is flaunting economics in the face a quite a bit…

  2. comment
    Comment #17878983

    The idea of drone swarms doesn't go well together with aerodynamics and basic physical intuition. If you shrink an aircraft down, the aerodynamic cross-section (i.e the drag force)…

  3. comment
    Comment #17781793

    On Win10 you need to have enough swap space on an SSD; HDD I/O has totally kneecapped latency, seemingly due to blind usage of NCQ (AHCI driver got replaced from Win7), so it choke…

  4. comment
    Comment #17732677

    Why the hell does RSA ever get used anymore, esp. in smartcards etc? It's been obsolete for like 10 years thanks to ECC, and ECC is way easier to implement (esp. 127-bit and 521-bi…

  5. comment
    Comment #17253760

    Wouldn't code instrumentation be trivially bypassable using an eval construct? esp. something like []["constructor"]["constructor"]("while (true) { }")() Or does Nashorn have a mec…

  6. comment
    Comment #17145210

    Not necessarily , 1.3MJ (360 Wh; but screw that unit) of diesel isn't much of an explosive under normal circumstances. It really depends on the maximum power output under normal op…

  7. comment
  8. comment
    Comment #17072917

    Windows 10 is borderline unusable due to it (it evicts RAM very aggressively to use as disk cache). Doesn't help that their IO scheduler is completely screwed up too (and they remo…

  9. comment
    Comment #17039521

    On that subject, I'm curious whether there is any CPU out there that sets the overflow flag incorrectly when computing (-1) - n when n is the most negative number (which negates to…

  10. comment
    Comment #17038578

    As far as I understand, what's happening is: * There's an old feature which causes POP SS/MOV SS instructions to delay all interrupts until the next instruction has executed, to sa…

  11. comment
    Comment #17038463

    To be fair, Intel docs are so consistently gibberish that it might as well be classified a separate language (similar to english, but only a quarter the information density). In th…

  12. comment
    Comment #16970711

    It might still be possible. The JVM and .NET both have their speed annihilated by their awful choice of memory model.

  13. comment
    Comment #16885978

    The secret to linear algebra is homogenous coordinates together the exterior algebra. plus matrices sprinkled in. If you use those for everything all your problems simply disappear…

  14. comment
    Comment #16754716

    I'm not talking about the fundamentally misguided memory-distributed computing stuff, I mean "improve flexibility enough that you can bolt some additional units on as offload" (add…

  15. comment
    Comment #16753310

    I've heard a few times that the Cell wasn't all that bad in terms of performance, just very difficult to program. Not sure how true that is, but ostensibly the useability is just a…

  16. comment
    Comment #16753218

    It'll change if someone can manage to take the "central" out of the CPU internals. You don't necessarily need software to see anything other than a monolithic core, but having to p…

  17. comment
    Comment #16753195

    Personally I'd predict the opposite (and current) pattern, creating generic chips which can replace many ASICs / less generic chips. If you can produce a chip which can replace 10 …

  18. comment
    Comment #16753148

    GaAs logic is probably happening at some point, just not yet. All improvements like that which would be incredibly expensive to develop will be held off on until all cheaper option…

  19. comment
    Comment #16752863

    Seems like most people here are bringing up speed of light problems, which are a concern, but it's not what stops you. The problem is that your yield goes down exponentially with d…

  20. comment
    Comment #16752827

    I think we're far from the ceiling on CPU performance so far, but we seem to have hit a (micro)architectural dead end. Currently a lot of time and transistors is spent simply shuff…

  21. comment
    Comment #16698459

    If they do, whatever issues they're occupied with finding would call for an exorcism.

  22. comment
    Comment #16696355

    This is what happens when you don't have a QA department.

  23. comment
    Comment #16689307

    Probably not gonna have as much luck with the transparency at those thicknesses.

  24. comment
    Comment #16687784

    It could potentially allow you to stack 3 infront of eachother to render color instead of needing alternating colored subpixels. Not sure if that would actually be useful for anyth…

  25. comment
    Comment #16655346

    My ass, mostly. I'm extrapolating based on monitor framerates and how accurately we can see the velocity of fast-moving objects, and that I can spot a timing difference of ~5ms rel…