Hacker News: logdahl

New comment by logdahl in "SeL4 security proofs now complete on AArch64"

logdahl — Mon, 24 Aug 2026 15:33:40 +0000

What about power draw? Maybe that doesn't count as a side channel (I'm not a security guy). Afaik, CMOS transistors mostly draw power on switching state, so a normal adder adding 0+0 or 1+1 is visible in the power draw.

I googled a bit and found Sense Amplifier-Based Logic (SABL). Super interesting :^)

New comment by logdahl in "A 3rd World Embedded Engineer Responds to "RISC-V They Should Have Known Better""

logdahl — Sun, 16 Aug 2026 21:17:25 +0000

I haven't seen this before, but this ReCAPTCHA required "mobile verification" from me, and asked me to download an app. Oh what a world we live in...

New comment by logdahl in "Corners Don't Look Like That: Regarding Screenspace Ambient Occlusion (2012)"

logdahl — Mon, 20 Jul 2026 15:44:33 +0000

I find this very interesting. I have implemented AO myself and understood that its physically inaccurate (it should really be radiosity presence, not ambient occlusion), but have believed the results to look realistic. Or rather; better than flatly lit, which makes geometry hard to understand.

Thank you for these photographs! It would be awesome to have a CG benchmark like this (geometry + light properties) that we could compare to. I'm sure this exists already but. Very neat!

New comment by logdahl in "Show HN: I replaced a $120k bowling center system with $1,600 in ESP32s"

logdahl — Sun, 19 Jul 2026 21:22:44 +0000

Really interesting stuff! If you're looking for bowling animations I'd look into https://youtu.be/ZXpETSoNWxY

Made me laugh.

New comment by logdahl in "Show HN: misa77 - a codec that decodes 2x faster than LZ4 (at better ratios)"

logdahl — Wed, 15 Jul 2026 17:32:01 +0000

Nice results, I will keep a watch on this! Would be interesting to see benchmarks vs Oodle compression, I think the most similar one is Selkie?

New comment by logdahl in "InfiniteDiffusion: Learned Procedural Open-World Terrain Generation"

logdahl — Tue, 14 Jul 2026 08:15:56 +0000

Apologies: I had to editorialize the title to make it fit. :^)

InfiniteDiffusion: Learned Procedural Open-World Terrain Generation

logdahl — Tue, 14 Jul 2026 08:15:14 +0000

Article URL: https://xandergos.github.io/terrain-diffusion/

Comments URL: https://news.ycombinator.com/item?id=48903653

Points: 2

# Comments: 1

New comment by logdahl in "Herdr: One terminal to rule them all"

logdahl — Tue, 07 Jul 2026 21:22:26 +0000

I was under the impression that "individual engineers ..." is basically implied always, if not just outright lies, I don't trust these listings very highly. Except when its clear that the companies are actually customers. Like; how do I even add my company to this list? Email them?

New comment by logdahl in "Rotman Lens"

logdahl — Tue, 07 Jul 2026 08:46:17 +0000

I found this one truly shocking!

Amy Lloyd, British neuroscientist who studied amyloid plaques associated with Alzheimer's disease[0]

[0] https://www.dundee.ac.uk/people/amy-lloyd

New comment by logdahl in "OpenPrinter"

logdahl — Sun, 05 Jul 2026 21:34:47 +0000

Would be interested in others take on this. Personally, I wonder:

- By rolling the paper, will it really stay flat after printing? - How easy / cheap will sourcing ink be?

New comment by logdahl in "OpenRA"

logdahl — Sat, 27 Jun 2026 12:42:04 +0000

I might suck but I found it really hard iirc :^(

New comment by logdahl in "Fintech Engineering Handbook"

logdahl — Sat, 27 Jun 2026 12:39:28 +0000

It may be a good idea to start the book with a really short "About the author" to state exactly this and your work experience. Otherwise looks well written to me, good job! :)

New comment by logdahl in "Anthropic surpasses OpenAI to become most valuable AI startup"

logdahl — Sat, 30 May 2026 15:59:50 +0000

A lot is changing. Like 9months ago, I was convinced Claude was best. I'm not so sure anymore :^)

New comment by logdahl in "On Rendering Diffs"

logdahl — Fri, 29 May 2026 20:03:07 +0000

Maybe an intended effect, but the header ascii art is suspiciously misaligned... :^)

New comment by logdahl in "We let AIs run radio stations"

logdahl — Mon, 18 May 2026 21:44:11 +0000

For me its 2 things. Firstly, I mean the posts are always a fun read but it feels like just that, not much deeper insight. Secondly, its very self promotion-y. This account is almost exclusively posting / interacting with Andon content, which afaik is against HN guidelines. These two in combination makes the content feel more like marketing than contribution to discussions. I feel like some other companies manage to share interesting work and market. But maybe its just my taste :^)

New comment by logdahl in "Scrcpy v4.0"

logdahl — Wed, 13 May 2026 05:41:43 +0000

I once dropped my phone like 40cm the 100th time and my screen went completely black. However, the touch still worked! After loads of time and comparing to another android phone, i managed to blindly navigate to that blind mode setting and enable it!

I have immense respect for those that are blind and need to interact this way. In the few days I used my phone this way I noticed multiple apps, especially my bank app with a keypad, had completely broken navigation and iirc not even numbered the actual buttons?! So it was a 'swipe right 9 times, double tap, swipe left 6 times' while the TTS was yelling nonsense!

New comment by logdahl in "Show HN: Needle: We Distilled Gemini Tool Calling into a 26M Model"

logdahl — Tue, 12 May 2026 20:36:47 +0000

I find this stuff super fascinating and been thinking about it myself. Maybe one could bootstrap tiny models on a rather 'pure' procedural data set. Neglecting [0] of course...

[0]: http://www.incompleteideas.net/IncIdeas/BitterLesson.html

New comment by logdahl in "Killswitch: Per-function short-circuit mitigation primitive"

logdahl — Sat, 09 May 2026 14:13:49 +0000

Super cool. Also, love reading high quality linux patches. I think many, myself previously included, are afraid to even read the kernel source as one thinks it must be super complex. Of course some parts really are. However, the code is honestly of such high quality. I also highly value that feeling of realizing something once thought 'arcane' was actually only made by other humans, and it is legal to go read it and learn from it.

New comment by logdahl in "Ask HN: How to solve the cold start problem for a two-sided marketplace?"

logdahl — Mon, 20 Apr 2026 17:25:45 +0000

Cool site, seems like a really useful tool!

New comment by logdahl in "Intuiting Pratt Parsing"

logdahl — Wed, 01 Apr 2026 10:58:26 +0000

Love Pratt parsing! Not a compiler guy, but I've spent way too many hours reflecting on parsing. I remember trying to get though the dragon book so many times and reading all about formal grammar etc. Until I landed on; recursive descent parsing + Pratt for expressions. Super simple technique, and for me is sufficient. I'm sure it doesn't cover all cases, but just for toy languages it feels like we can usually do everything with 2-token lookahead.

Not to step on anyone's toes, I just don't feel that formal grammar theory is that important in practice. :^)