a1k0n

8 ms·

1.
Scaffolding to Superhuman: How Curriculum Learning Solved 2048 and Tetris(kywch.github.io)
150 points by a1k0n 9mo ago|33 comments
2.
by a1k0n 9mo ago
CORDIC is more accurate, but takes as many iterations as you have bits of precision in your angle. Another demo called Warp in this contest used pipelined CORDIC to do atan2 on every pixel to create a tunnel, which is super impressive. htt
3.
by a1k0n 9mo ago
Yeah, it is exact in this specific circumstance. But yes, it's exactly the same trick; I also enjoyed that video in my Youtube recommender feed last week!
4.
by a1k0n 9mo ago
And this thread shows all of them on real hardware: https://x.com/i/status/1992802154370011595
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by a1k0n 9mo ago
Ah that's what I get for self hosting. What browser? https://youtu.be/7xPS-0nydms
6.
Pure Silicon Demo Coding: No CPU, No Memory, Just 4k Gates(a1k0n.net)
429 points by a1k0n 9mo ago|73 comments
7.
by a1k0n 2y ago
lmao! that was so cringe I unlisted it from the main index. who is "we"? part 3 is to find the secp256k1 private key for satoshi's bitcoins
8.
From ASCII to ASIC: Porting donut.c to a tiny slice of silicon(a1k0n.net)
162 points by a1k0n 2y ago|25 comments
9.
by a1k0n 3y ago
Yes, it has to in fact. If you have zero context to attend to in a transformer, and you try to predict the first token, you effectively are multiplying a zero-vector by the attention head, making all tokens equally likely in the final softm
10.
by a1k0n 4y ago
For finding interesting Ethereum addresses on the GPU (uses SHA3 instead of MD5) there's a tool called profanity. Amusingly the tool was archived by the author years ago, and just last year a stupid bug in the random initialization cod
11.
by a1k0n 4y ago
> If anyone has an idea why the TIA’s designers used LFSRs for this stuff, I’d love to hear about it. I'm guessing because a counter would have ripple carry (i.e. five extra gate delays when rolling over from 111111 to 000000) or ne
12.
by a1k0n 6y ago
https://github.com/a1k0n/asciitracing sort of combines those things also
13.
Localization with ceiling lights for fast indoor autonomous racing(a1k0n.net)
9 points by a1k0n 6y ago|0 comments
14.
by a1k0n 6y ago
I have to admit I stole the idea from this 256-byte demo (after it wiped the floor with the one I made at a demo party): http://www.pouet.net/prod.php?which=5327
15.
by a1k0n 6y ago
I tweeted a screenshot of the Jupyter Notebook session I used to create the code at the bottom: https://twitter.com/a1k0n/status/1301261285800030208
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by a1k0n 6y ago
Oh, yeah. I had to do that for the RISC-V port, too. I'll update the post, thanks.
17.
by a1k0n 6y ago
Yeah, that one wasn't too hard but it's nice to have it to check your work. I didn't go into it in the post, but the real power of SymPy is its cse() function, which I used to do all the common subexpression elimination for t
18.
by a1k0n 6y ago
Huh, it has 15 registers? AX, BX, CX, DX, SI, DI, BP, SP; CS, DS, ES, SS, IP, flags. What am I missing?
19.
by a1k0n 7y ago
i mv'd config to config~, then made a copy of it as config. the old file, now renamed to config~, is still read-only.
20.
by a1k0n 7y ago
yes yes, it is owned by me. i edited my username in the "screenshot".
21.
by a1k0n 7y ago
after updating to Catalina I was suddenly unable to edit my own ~/.ssh/config. I still can't figure out why not. I could rename it and make a copy, though, and the old one shows this: -rw-r--r--@ 1 aaaaaaa staff 2571 Sep 1
22.
by a1k0n 7y ago
I love @foone's content, but I had to unfollow him because his output is so prodigious my entire Twitter feed became just @foone. On second thought, having seen the rest of what Twitter has to offer, that's not such a bad thing...
23.
by a1k0n 8y ago
Maybe it's filtering by mod/xm and he only released S3Ms?
24.
An Interactive Introduction to Fourier Transforms(jezzamon.com)
230 points by a1k0n 8y ago|22 comments
25.
by a1k0n 8y ago
Heh, you can just click on it to see the result if you don't want to actually compile it.
26.
by a1k0n 8y ago
I'm aware of one paper which tries to fit a local polynomial model to the lateral dynamics, and they have a different model for different positions on the track (it requires really good localization to work): https://arxiv.o
27.
by a1k0n 8y ago
Nice! Are you doing probabilistic roll-outs, iLQR, or SQP, or what? What does your model look like? I've been struggling with this -- not sure how complex the tire dynamics model needs to be, for instance; do you need the whole Pacejka
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by a1k0n 8y ago
Yes, that's the current state of the car. It's constantly fighting for traction; there are some lower-level control systems trying to maintain yaw rate (which automatically does things like counter-steering in a drift). I'll
29.
by a1k0n 8y ago
The canvases are just some javascript code which draw to the 2d context after a requestAnimationFrame(): https://www.a1k0n.net/js/steering.js Sure, that sounds good!
30.
by a1k0n 8y ago
Yeah, come check it out, it's pretty fun! https://www.meetup.com/DIYRobocars/

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