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M8.7 earthquake in Western Pacific, tsunami warning issued

https://earthquake.usgs.gov/earthquakes/eventpage/us6000qw60/executive
418•jandrewrogers•3h ago•79 comments

Study mode

https://openai.com/index/chatgpt-study-mode/
748•meetpateltech•10h ago•520 comments

RIP Shunsaku Tamiya, the man who made plastic model kits a global obsession

https://JapaneseNostalgicCar.com/rip-shunsaku-tamiya-plastic-model-kits/
166•fidotron•6h ago•30 comments

URL-Driven State in HTMX

https://www.lorenstew.art/blog/bookmarkable-by-design-url-state-htmx/
110•lorenstewart•5h ago•41 comments

Launch HN: Hyprnote (YC S25) – An open-source AI meeting notetaker

158•yujonglee•11h ago•84 comments

Two Birds with One Tone: I/Q Signals and Fourier Transform

https://wirelesspi.com/two-birds-with-one-tone-i-q-signals-and-fourier-transform-part-1/
23•teleforce•4h ago•2 comments

USB-C for Lightning iPhones

https://obsoless.com/products/iph0n3-usb-c-protection-case
83•colinprince•3d ago•66 comments

Learning basic electronics by building fireflies

http://a64.in/posts/learning-basic-electronics-by-building-fireflies/
192•signa11•10h ago•55 comments

iPhone 16 cameras vs. traditional digital cameras

https://candid9.com/phone-camera/
150•sergiotapia•13h ago•195 comments

FoundationDB: From idea to Apple acquisition [video]

https://www.youtube.com/watch?v=C1nZzQqcPZw
125•zdw•4d ago•16 comments

Show HN: I built an AI that turns any book into a text adventure game

https://www.kathaaverse.com/
208•rcrKnight•11h ago•82 comments

How the brain increases blood flow on demand

https://hms.harvard.edu/news/how-brain-increases-blood-flow-demand
76•gmays•8h ago•35 comments

JavaScript decided my day starts at 9am

https://senhongo.com/blog/when-javaScript-decided-my-day-starts-at-9am
20•SenHeng•3d ago•21 comments

Dropbox Passwords discontinuation

https://help.dropbox.com/en-us/installs/dropbox-passwords-discontinuation
39•h1fra•7h ago•13 comments

A month using XMPP (using Snikket) for every call and chat (2023)

https://neilzone.co.uk/2023/08/a-month-using-xmpp-using-snikket-for-every-call-and-chat/
85•ColinWright•9h ago•52 comments

Show HN: Terminal-Bench-RL: Training long-horizon terminal agents with RL

https://github.com/Danau5tin/terminal-bench-rl
106•Danau5tin•16h ago•10 comments

Irrelevant facts about cats added to math problems increase LLM errors by 300%

https://www.science.org/content/article/scienceadviser-cats-confuse-ai
330•sxv•12h ago•160 comments

CodeCrafters (YC S22) is hiring first Marketing Person

https://www.ycombinator.com/companies/codecrafters/jobs/7ATipKJ-1st-marketing-hire
1•sarupbanskota•6h ago

ACM Transitions to Full Open Access

https://www.acm.org/publications/openaccess
130•pcvarmint•10h ago•12 comments

Microsoft Flight Simulator 2024: WebAssembly SDK

https://docs.flightsimulator.com/msfs2024/html/6_Programming_APIs/WASM/WebAssembly.htm
119•breve•3d ago•62 comments

Playing with more user-friendly methods for multi-factor authentication

https://tesseral.com/blog/i-designed-some-more-user-friendly-methods-for-multi-factor-authentication
50•noleary•1d ago•32 comments

Structuring large Clojure codebases with Biff

https://biffweb.com/p/structuring-large-codebases/
55•PaulHoule•13h ago•3 comments

Measuring Engineering

https://fffej.substack.com/p/measuring-engineering
21•mooreds•3d ago•3 comments

My 2.5 year old laptop can write Space Invaders in JavaScript now (GLM-4.5 Air)

https://simonwillison.net/2025/Jul/29/space-invaders/
467•simonw•14h ago•323 comments

Actual Size Online Ruler (Mm,Cm,Inches)

https://anruler.com/
4•artiomyak•2d ago•6 comments

Supervised fine tuning on curated data is reinforcement learning

https://arxiv.org/abs/2507.12856
42•GabrielBianconi•7h ago•14 comments

Maru OS – Use your phone as your PC

https://maruos.com/
206•fsflover•8h ago•144 comments

Observable Notebooks 2.0 Technology Preview

https://observablehq.com/notebook-kit/
189•mbostock•13h ago•45 comments

Elements of System Design

https://github.com/jarulraj/periodic-table
91•qianli_cs•10h ago•33 comments

More honey bees dying, even as antibiotic use halves

https://news.uoguelph.ca/2025/07/more-honey-bees-dying-even-as-antibiotic-use-halves/
159•pseudolus•8h ago•116 comments
Open in hackernews

Show HN: CUDA Fractal Renderer

https://github.com/tripplyons/cuda-fractal-renderer
42•tripplyons•4d ago

Comments

bsenftner•15h ago
Have you tried fractal volumes yet? A calculation worthy of cuda... Or even fractal animation? Fun awaits!
neomantra•14h ago
I have been very interested in fractal volumes using mesh shading to sample the isosurfaces. Some of the first mesh shader demos included Mandelbulbs, but AFAIK there's been no OSS tools/demos 7 years later?

Please comment if you know of one! Checking now, there appears to be recent (~3 years) graduate research papers on this topic , so a new reading list for me.

tripplyons•12h ago
I've experimented with fractals in higher dimensions, but not in CUDA yet. Seems like a good next step!
neomantra•14h ago
OP, great work on this. While I can't run it, I appreciate that it's pretty bite-sized and easy to inspect.

Dealing with volumes is a big change, but interpolation of the affine transforms is not far off. Expose the matrix to the CLI and then one can wrap it with an interpolation script; or you can build that interpolation in. Maybe note the generation time in your README?

I spent many weekends in the mid-00's doing GPGPU for ElectricSheep-style Iterated Function systems, instead of the distributed ElectricSheep network [1]. That was C++ and CUDA. Your implementation is much easier to make sense of, albeit it smaller scope.

[1] https://electricsheep.org

azath92•14h ago
The electric sheep always intrigued me so much! but was a bit before my time, and also felt so impenetrable. I appreciate you drawing the link between them and something like this which is so finite and understandable.

and to OP for making something so finite and understandable ofc.

monster_truck•14h ago
Electric Sheep still works great to this day. The lifetime membership is worth it if you want nice enough sheep with 0 effort, but there are countless HD packs on archiveorg and elsewhere
azath92•12h ago
cool to hear that the actual electric sheep project is still something you can interact with!

For those super new to it (like me), check out https://electricsheep.org/ og video we came across it with https://www.youtube.com/watch?v=O5RdMvgk8b0 (this was just the first I found when looking there are many on youtube) and the algorithm behind it https://flam3.com/ This is all AFAICT as someone who's only just skimmed the surface, but i find it amazing.

neomantra•13h ago
Porting the ElectricSheep AfterEffects Plugin from Windows to OSX was my true first open source contribution (1999?). And that only happened because my friend was friends with its author and it came up when he was showing off some fractals movies. Then I said, “Oh I can help you with that.”

That OSS plugin itself was riding on the OSS ElectricSheep. All collaboration and distribution was via tarballs, although is on GitHub now. It was a trip seeing some code I wrangled make its way into commercial media, just organically.

The ElectricSheep project weaves so many cool tech threads together. Only thing is was missing compared to modernity is decentralized genome propagation.

Scott Draves, its author, has some great artist content too. He also spearheaded Polyglot notebooks, early on in that kind of interface.

azath92•12h ago
I think the depth (in time, and community involvement) is one of the things that has drawn me to this project. It has the excellent vibe of a dedicated and yet accessible, IMO because of the beautiful and widely available visual output, internet community.

Thanks for sharing some of this rich history!

almostgotcaught•13h ago
tangential question: does anyone know a way to call/use CUDA from graphics code? like directx or opengl (or whatever). as opposed to this code which is named "renderer" but doesn't draw to the screen...
Ono-Sendai•13h ago
compute shaders?
corysama•10h ago
There are DX/GL interop functions in the CUDA API. But, they are a bit tricky. Unless you really have a strong, specific need for something only available in CUDA, you are better off using compute shaders.
dcanelhas•12h ago
Thanks for sharing. I don't see why there is an atomic add in the kernel there. It doesn't look like two separate threads should be able to modify the same pixel, based on the block/thread indices?
tripplyons•12h ago
Each block is for a different image, but each thread within the same block has a small chance of modifying the same pixel.
porphyra•12h ago
Writing CUDA in Python is so nice and elegant now. What a time to be alive! I love how wonderfully short the code is.
sestep•10h ago
Thank you for providing a uv.lock file! I spent a good chunk of last month trying to get graphics research projects working that only provided requirements.txt (or not even that, e.g. the original Gaussian splatting paper), and it was hell to figure out how to undo all the bitrot.