redcodenl

I am a developer.

And I'm surrounded by "vibe coders" and I'm starting to accept this new reality. Unburdened by knowledge and reading the code, they can produce output at an incredible pace.

But I can't be objective about vibed code...

However what I can do, vibe in a different field, mathematics.

I've made a visual walk through the machinery inside a large language model: from raw text, to tokens, to vectors, to attention, to the next token.

If you have any comments/questions/remarks/improvements, let me know!

That sounds like otter nonsense...

Roy van Rijn here, the guy that got an honerable mention for being “first”. Ended up 7th or something.

If you’re interested in even more in-depth tips and tricks that were used in this contest, I highly recommend this three hour (!) long deep dive I did with Thomas Wuerthinger (the winner of 1BRC):

https://youtu.be/_w4-BqeeC0k?si=p4NsRFPe6Jtq7HvA

There is so much valuable content in that talk, some things that I didn’t even realize until long after the contest was over.

It’s probably the best and most detailed conference talk I’ve ever done.

Last January a challenge was posted online by Gunnar Morling: How fast can you parse a file with one billion rows of weather data using Java? Little did I know this deceivingly simple question would lead me down a path that taught me all about: parallelism, memory mapped files, SWAR techniques (SIMD as a register), bit twiddling, branchless code, mechanical sympathy, Graal native compilation and finally... I even turned to the dark side: using sun.misc.Unsafe. Join me in this deep dive where I'll explain all the code changes and tricks that took me from the reference implementation which processes the billion records in less than 4 minutes, to processing everything in under two seconds. Who knew Java could be this fast?

I've experienced the same thing! We laughed so hard.

https://twitter.com/royvanrijn/status/1214162400666103808

It is caused by an electric EMI spike from gas lift office chair. There is even an official Dell issue about it:

https://support.displaylink.com/knowledgebase/articles/73861...

These fully customizable developers are powered by the advanced GPT-4 model. Digital Developers™ offer a cost-effective alternative to traditional Java developers, with a host of exceptional capabilities.

Or: Why is Python still growing and Java falling behind?

This happened to us at work: https://twitter.com/royvanrijn/status/1214162400666103808

He also did a couple of recordings/talk on YouTube about how it all works and also does a live demo:

https://youtu.be/T4PJoAh4X1g?t=1977

It even works to align/overlay music, which is really cool:

https://youtu.be/T4PJoAh4X1g?t=2136

Sure there is a lot of bad music in there, but the next top 40 song that tops the charts will likely also be in there, hidden away.

There are many ways to properly implement content-id, for example using fingerprinting (like Shazam does). These methods are able to detect matches even with a lot of noise and changes...

I hope they implement something like this, to make detecting duplicates and blocking "revenge porn" much easier and to have regression against re-uploading.

Explanation of Log4Shell, including demo of multiple RCE's and information leakage.

Some LEGENDARY eight-amulets:

  eiGHt EIgHT eIght eighT eight EIgHT EIgHT eIGHt eiGhT eIgHT - 8 :888888881a7402c0c8ba04e6fa2cbbd4aa5111af3fb2dce8c9d90b06ab13ed38
  EigHT EIGHT EIGhT EiGhT EighT EIGhT eIGhT eIGhT EIGHT eight - 8 :0888888885a04f80a17a45468c761c0e6a80b9b1309a408003b024a1b7ddfc3d
  EighT EigHt EighT eiGht EIGHt eiGHt EIGhT eIght eight Eight - 8 :985a2888888889d774f2c083b44bd5a87f86974295f6178bf40da5ac2bcd9d6e
  EigHt eigHt eighT eight EigHt eigHT eIgHT eight eiGHT eIgHT - 8 :06da1388888888b0fe865087da99839debe557e4a7d762d740d93d5eea6a683b
  EIgHt eIght EigHT eigHt EiGhT EigHt Eight eight eIGht eiGHT - 8 :fe9143429488888888c375251de2493913a07ffccd0e104810153085d27dfb04
  eiGHT eiGhT eIGHT eIGHt eigHT EiGht EIGht eiGhT EIGht eIGhT - 8 :91e10b15288c9888888884ca0082ce0ccfe4bfafcb13444bc36fcf30b19ca363
  eiGHT eIGht eIgHt EIGht EIGHt EIgHT eiGht EiGHT eIGHT eiGHt - 8 :fff5d81258a222b88888888b258ce415a1ae1b12b14535c09b9dcb19d70d4328
  EIghT EiGHT EIght EIGhT EigHt EIGHT eIghT eIGhT EighT EIGht - 8 :2b7de871ee1694892ddbf2937b688888888e99d37e5c920804424670a178a133
  EIGHt EIght eigHT eiGHt eiGHT eIGHT EigHT EIGht eigHT eiGHt - 8 :51670c25d4dab2d891cd18beed868888888870850a92e42887c62bd750a16c5f
  EIghT EIgHT eIgHT EIGHt eiGHT eight EigHt EIGHT eIght eIGHt - 8 :80b5c98d08eacad221f25bde009488888888b58dbb3aafaf617b0b364133e87b
  EIgHT EIGhT EIGHt EigHT eIGhT EIght EIgHT EIGhT eIgHT EIGHt - 8 :cd0b0fd7ef75fc8a37001bc87183d326aeba888888885cc2c48dbf48d38a7bfb
  eigHt eIGhT EighT eIgHT eigHT eIGHT EigHT EighT EIGht eigHt - 8 :8ecfe9ad597bad2e537beacce70464cb57c18f88888888fd105c8c31de75345e
  eiGHT eIGHt EIGhT EIghT EIghT EiGHT eiGHT eIghT eIGht EIgHT - 8 :e88f20df9f85114be9e95f88daeb57c94be3564e4c8688888888c0fbbc7e4e8c
  eigHT eIgHt EigHt EigHt EigHT EIGHt EiGht EigHT eIGHT EiGhT - 8 :bcab4227100078135599839a3d3b35c38b75e94e753e95a88888888a29616478

This one is even MYTHICAL:

  EIgHt EiGHT eIGhT eIght EIgHT EiGHt EiGHt eIGHT - 9 :6dcfd600d05e1249d6590aaee053793b792c60ff94513456b697888888888f67

Now how can someone (easily) put them on this blockchain?

Completely agree here, the entire 'solver' is a library there.

However, it does show how cool and versatile SAT solvers are for people who haven't used or seen them yet.

I wonder how much of that is programmed/automated and how much work is still being done manually...

Backtracking and eliminating numbers can be easily automated.

Regarding Conway's Law:

We have found that by changing our software/system architecture we have also inadvertently changed our organisation structure.

- Inverse Conway Law or just Roy's Law ;-)

Before we had four cross functional teams, working on a single application, everyone felt responsible for it, worked overtime to fix bugs etc, we had good communication between the teams.

But after we switched to microservices the teams became responsible for just a part of the system, their microservice(s). Whenever we had an outage, one team was left to fix it, the others just went home. They stopped talking to each other because they didn't share any code, no issues... they stopped having lunch together, some things got way worse in the organisation, all sparked by a 'simple' architectural change, moving to microservices.

And... its gone. Database error. :-(

Ah, just now noticed this: https://news.ycombinator.com/item?id=18802763

Given the maze on the website, what is the highest number you can get on a square when creating a maze?

This is a fun puzzle, I got up to 124:

https://imgur.com/a/L3OcJpA