pistachiopro

7 ms·

1.
by pistachiopro 2y ago
Something that set Baba is You apart for me compared to any other puzzle game I can remember playing is the puzzles themselves were actually "funny." Not like Portal, where you solved puzzles alongside a funny narrative, but in th
2.
by pistachiopro 3y ago
Take a relatively simple large language model like Llama 1. It has a context of 2048 tokens and each token can be one of 32,000 values. So the lookup table would need 32,000^2048 entries. That's not just impractically large, that'
3.
by pistachiopro 3y ago
Practically all materials behave nonlinearly when stretched or compressed a visible amount. For certain structural applications, though, if that happens we've already failed. Linear models work really well for designing big concrete st
4.
by pistachiopro 3y ago
LLMs are being trained on a smaller and smaller percentage of human prose. Right now it seems like code is the best source for the bulk of an LLM's diet, but it's also looking likely that synthetic math text will be even better. T
5.
by pistachiopro 3y ago
Chris Hecker and Jon Blow (among others) wrote good math and physics content for Game Developer Magazine, but the one I most associate with it is Jeff Lander. He's got copies of the articles he wrote throughout the years hosted on his
6.
by pistachiopro 3y ago
According to Wikipedia, 43% of the sun's energy at the surface of the earth is visible light ( https://en.m.wikipedia.org/wiki/Sunlight#Measurement ). So just blocking the other wavelengths would help, but I'm
7.
by pistachiopro 3y ago
You can publish an article with a title like this and probably not end up embarrassed. Room temperature and pressure super conductors seem hard enough to find that chances are any given paper claiming to have found one will end up with a mo
8.
by pistachiopro 3y ago
Have you looked into Small Step XPBD (introduced in the paper "Small Steps in Physics Simulation ")? It's the most efficient nonlinear dynamics integrator/solver I've come across, and luckily one of the simplest, to
9.
by pistachiopro 3y ago
Right, so for his nondeterministic path: r(t) = 0 ; t <= T r(t) = (1/144)(t-T)^4 ; t >= T We can see that r''''(T) is either 0 or 1/6, depending on if we go with the top or bottom eq
10.
by pistachiopro 3y ago
> That explains why XPDB moves away from "substepping" the physics Interestingly, XPBD has moved back to substepping! The relatively recent "Small Steps in Physics Simulation" from Nvidia goes into it, but I can outli
11.
by pistachiopro 3y ago
I'm not familiar with the implementation of Quake's physics, but my recollection of the PBD paper was that it was basically a "mathing up" of what was already a fairly common way of handling physics in games. Thomas Jako
12.
by pistachiopro 4y ago
Looks very interesting! I've been having trouble getting good SIMD performance from WASM. Are there any benchmarks posted anywhere comparing Highway's performance on various native targets vs WASM?
13.
by pistachiopro 4y ago
I think your question speaks to something deep and interesting about XPBD. All classical mechanics sims revolve on some level around "integrating" Newton's second law of motion: F=ma. Force equals mass times acceleration. XPB
14.
by pistachiopro 4y ago
Realtime fluid sim is making lots of progress, though full 3D sims still appear to be computationally out of reach, at least for games that aren't focused exclusively on them. Here are some fun fluid sim examples from members of the Te
15.
by pistachiopro 4y ago
Ten Minute Physics is a great resource! Matthias Mueller makes concise demos and explains them really well. (Though I think it would take someone without existing familiarity with the subject matter a lot longer than 10 minutes to digest th
16.
by pistachiopro 4y ago
Thanks for the link. By my reading, of the 8 incidents reported in the last 10 days for Airbus and Boeing aircraft, 7 were collisions with birds and one was: > AIRCRAFT LANDED AND POST FLIGHT INSPECTION REVEALED DAMAGE TO RIGHT LANDING G
17.
by pistachiopro 4y ago
Games generally don't use copy on write, but they do often explicitly pipeline processing to happen across multiple frames (usually by manually copying the necessary data from sim "owned" memory to render "owned" me
18.
by pistachiopro 4y ago
I believe all the major browser vendors now support the notion of "secure context," where you need to use TLS, <Cross-Origin-Opener-Policy: same-origin, Cross-Origin-Embedder-Policy: require-corp> headers, and maybe a couple
19.
by pistachiopro 4y ago
Having worked on a fairly popular .io game mostly played by kids on phones and chromebooks over wifi, I concur with everything you said. 1) We updated around 60Hz, and bandwidth was never an issue (everything was binary encoded and many val
20.
by pistachiopro 4y ago
As a longtime C++ programmer, my view is that that manual memory management is a discipline that you can learn somewhat easily and then you don't spend a lot of time thinking about it.* <-- Big Asterisk For many applications, alloca
21.
by pistachiopro 4y ago
Throwing in my data: for physics simulation code, WASM vs native was identical, provided the native code was compiled with automatic SIMD optimizations disabled. On the one hand, that speaks well of the idea of web assembly, on the other, d
22.
by pistachiopro 5y ago
Nvidia DLSS is an important part of how they achieved 30Hz at 4k resolution, but that's more of a shading assist and doesn't affect the animation. The facial animation will be compressed with Ziva's ML solution.
23.
by pistachiopro 5y ago
The geometry is fully pre-baked, but wrinkle and blood details respond in realtime to the pre-baked geometry.
24.
by pistachiopro 5y ago
Unity recently acquired Ziva, which specializes in the detailed animation of humans and other animals. They were known for their (not realtime) physics-based solutions, but now they have an ML model for faces, apparently. As far as I know,
25.
by pistachiopro 5y ago
This is indeed rendered in realtime, but one thing to note is it's a "4D" capture, more-or-less meaning each frame of the animation is its own asset. This makes it possible to reproduce subtle physics like the lips sticking t
26.
by pistachiopro 5y ago
I wonder if that's actually true. I mean, is the value of a Rolex retained in a world with true perfect replicas (like we can get with digital goods)? Right now, a good fake Rolex is still hundreds of dollars, and if someone does spot
27.
by pistachiopro 5y ago
Seems like the page background and text invert for OS dark mode, but the drawings don't.
28.
by pistachiopro 6y ago
I think your first point gets to the heart of it. Yes, I'd be happy to be able to live to 5000, but there are also plenty of other people in the world I'm truly glad don't get to live much past 90. Until we figure out a socie
29.
by pistachiopro 6y ago
It's still an interesting paper, but I was disappointed they were "just" concatenating an imagine generator with a language model. I'm really excited for when someone figures out concurrently trained models, say, alterna
30.
DeepSpeed: Extreme-scale model training for everyone(microsoft.com)
2 points by pistachiopro 6y ago|0 comments

More ›