Tobba_

27 ms·

1.
by Tobba_ 8y ago
"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 (so I'm sure the US military loves the idea)
2.
by Tobba_ 8y ago
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) scales with the area (scale^2), but your engine thrust
3.
by Tobba_ 8y ago
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 chokes out entirely when combined with the even more broken
4.
by Tobba_ 8y ago
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-bit).
5.
by Tobba_ 8y ago
Wouldn't code instrumentation be trivially bypassable using an eval construct? esp. something like []["constructor"]["constructor"]("while (true) { }")() Or does Nashorn have a mechanism for forcing
6.
by Tobba_ 8y ago
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 operation, and whether it can occur uncontrollably.
7.
by Tobba_ 8y ago
Good.
8.
by Tobba_ 8y ago
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 removed the ability to disable NCQ, so disk performance o
9.
by Tobba_ 8y ago
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 itself, so implementing subtraction by simply negating
10.
by Tobba_ 8y ago
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 safely allow changing both SS and SP without an
11.
by Tobba_ 8y ago
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 this case it seems they just didn't properly specify a pi
12.
by Tobba_ 8y ago
It might still be possible. The JVM and .NET both have their speed annihilated by their awful choice of memory model.
13.
by Tobba_ 8y ago
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.
by Tobba_ 8y ago
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" (address translation in this case would take some
15.
by Tobba_ 8y ago
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 tooling issue. Probably not a tooling issue that
16.
by Tobba_ 8y ago
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 plumb everything through one central exec
17.
by Tobba_ 8y ago
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 other low/medium-volume designs, economical s
18.
by Tobba_ 8y ago
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 options have been exhausted. It does seem to be slowly moving thou
19.
by Tobba_ 8y ago
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 die size, and binning them becomes a clusterfuck. The
20.
by Tobba_ 8y ago
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 shuffling data around the chip, or between the CPU and mem
21.
by Tobba_ 8y ago
If they do, whatever issues they're occupied with finding would call for an exorcism.
22.
by Tobba_ 8y ago
This is what happens when you don't have a QA department.
23.
by Tobba_ 8y ago
Probably not gonna have as much luck with the transparency at those thicknesses.
24.
by Tobba_ 8y ago
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 anything besides a density increase, but it could make color vect
25.
by Tobba_ 8y ago
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 reliably. Human eyes are almost comparable in terms of a
26.
by Tobba_ 8y ago
Yeah I'd be fairly concerned about them lying to or simply bribing the police too.
27.
by Tobba_ 8y ago
It essentially is. Even with that crappy autoexposure, she would probably be visible if the resolution and framerate wasn't terrible, and the compression hadn't taken out whatever detail remained.
28.
by Tobba_ 8y ago
If you wan't to compare against human "sample rate", it'd be equivalent to at least ~200 FPS (in order to get the same accuracy with a camera). Sure, the signal takes a moment to plumb its way through, but that's
29.
by Tobba_ 9y ago
For reference, VSM/4MSM are a set of shadow mapping techniques that don't suffer from acne, at the cost of suffering from bleeding problems that also need biasing. Shadows are probably one of the places where raytracing makes a lo
30.
by Tobba_ 9y ago
That's just because the industry is stuck using triangles in the art pipeline (and don't put in as much effort into the low-polys as they used to). If they were willing to use some variation of patch-based pipeline so that they co

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