LaurieWired

@lauriewired • 153,994 subscribers

researcher @google; serial complexity unpacker; https://t.co/Vl1seeNgYK ex @ msft & aerospace

Shorts

We take randomness for granted. Early PRNGs were BAD. Thousands of scientific papers used to rely on RANDU, created by IBM in the 1960s. In 1D space, it looks ok! Map in 3D…you start to see the issues. Now, there was a better solution...but it would cost you.

587,384 views

Every year shopify makes a website tracking the massive surge in compute on black friday. Right now they are tracking ~45+ million Kafka requests per second, and about 88,000 gigabytes of data per minute. (it's also just a really cool website)

237,579 views

hey! this might help you, you don’t have to FTP elf files and manually load them like that, you can use PS2link and push elfs directly across the network. I even have it setup where I have a virtual memory card that triggers FMCB to auto-load PS2Link, so you can rapidly iterate on real hardware

23,022 views

I promise this relates to RAM (you'll find out in my next video)

75,566 views

Modern tech tends to focus on “more”. More data. More bandwidth. More compute. The best software engineering happens in the “less” sphere; codec engineering. Listen to this stream with 90% packet loss. The Opus Encoder team is cracked:

242,600 views

Sharks love our undersea cables. Some suspect the weak, low-frequency fields attract sharks like distressed fish. Fiber optics are particularly tasty; AT&T expressed no incidents with “old [copper] cables”. In the 80s, telecoms called the incident Jaw's Syndrome.

203,188 views

It's hot out there today guys. Don't forget to keep your servers cool with a nice hose-down.

536,294 views

Absurd as it sounds, with smaller experiments it was completely worth it to: - Buy the book - Open a random page - Mark your starting point with a pen - Hand Type / Punch the data into cards

61,581 views

Is your compiler a boy or a MAN? Created by Donald Knuth, it’s a test to check if recursion is implemented properly. Originally written in ALGOL 60, a precursor to C, but can adapt to nearly any language. It really stresses the stack and heap, pushing insane call depths:

133,239 views

it's not every day you get to touch a Cray-2 supercomputer

64,993 views

Of course, that fits nicely in 32-bit hardware. Only a few instructions. Apple put it in CarbonLib, FreeBSD also used it, and for a few decades it was kind of everywhere. A few years later they discovered that 48271 was a little better. Specifically, a bit more even on spectral tests up to 6 dimensions. It’s kind of funny that so few listened. FreeBSD was still using 16807 in rand() all the way until 2021! So if you ever see that constant in disassembled code…well now you know :) (side note: most rand() implementations moved on to other LCGs, or mersenne twisters and such…but it’s arguable that 16807 is still quite ubiquitous!) Original Paper if you’d like to read:

21,874 views

Wanna know something wild? You can still reproduce a (similar) issue on modern systems. - Open a large file on notepad (not fullscreen) - Select text while scrolling down - Wiggle the mouse and notice the speed difference

79,564 views

This pokemon clone is stored inside a font. Yes, an actual font; think Times New Roman. As expected, it's playable anywhere you use fonts. A text document, code editor, etc. The full game takes about ~20 minutes to play, an hour if you find all the secrets. But how?

46,087 views

Videos

LIVE

1.2k

Anya Rossi

sweetdream.ai

SweetDream.ai•Sponsored•Livecam

Streaming Now

Watch Anya Live

Anya is streaming live right now! Join her private show and enjoy exclusive content.

HD live stream

Exclusive private shows

1.2k viewers online

Current Status

Live

Private Show

Join now for exclusive access

Free preview available • Premium content

0:58

Modern DRAM is based on a brilliant design from IBM. But, we're still paying for a latency penalty that's existed since the 60s! In this video, I'm introducing my research project (Tailslayer) that immensely reduces p99.99 latency on traditional RAM! By implementing a hedged read strategy taking advantage of (undocumented!) channel scrambling offsets, I've gotten as much as 15x reductions in tail latency. The technique works across Intel, AMD, Graviton, DDR4, DDR5, x86, ARM, you name it. Check out the C++ lib I wrote, watch the video, and try it yourself!

LaurieWired

860,059 views • 1 month ago

0:25

someone built a Linux CPU scheduler that makes scheduling decisions based on planetary positions and zodiac signs it actually works haha:

LaurieWired

1,655,296 views • 4 months ago

14:01

I love C++. It's the ultimate computer virus. Sometimes, Worse Is Better, New Jersey beats out MIT, and the dirt path always wins. The ghosts of these decisions still affect every operating system we use today! 00:00 The Dirt Path 01:00 A Third-Rate Computer Scientist 03:17 MIT vs New Jersey 05:49 The 100% Correctness Deathtrap 08:24 C++, the Ultimate Virus

LaurieWired

91,904 views • 8 days ago

0:58

Programming Isn't Math, It's Linguistics. Compilers and Humans have the same problem. We're all terrible at understanding each other. Join me for some formal language theory, a lot of C++, and some "recreational" insults.

LaurieWired

981,446 views • 7 months ago

2:21

You play doom with a CPU. I play doom with CPU usage. we are not the same

LaurieWired

3,619,811 views • 2 years ago

0:44

This...is Programming Like a Fighter Pilot. A single unhandled exception destroyed a $500 million rocket in seconds. The F-35 wasn't going to make the same mistake. By carefully slicing C++, engineers created one of the strictest coding standards ever written.

LaurieWired

376,895 views • 6 months ago

0:50

Gen Z doesn't Understand Filesystems. It's not their fault. Apple's early abstraction of mobile data storage has caused...confusion to say the least. But what does the real iOS filesystem look like? As a researcher myself; it's kind of insanely complicated:

LaurieWired

490,146 views • 9 months ago

0:24

Telephone Hold music sounds really bad. Mostly because it’s mapping complex instruments to a human throat. Many phone lines these days use CELP, Code-Excited Linear Prediction algorithms. Music breaks down in weird ways when you turn a piano into…speech.

LaurieWired

133,230 views • 2 months ago

0:58

Fading out audio is one of the most CPU-intensive tasks you can possibly do! When numbers get really small, the number of CPU operations can explode 100-fold. In this LaurieWired video, we'll explore the IEEE 754 standard, the fight between Intel and DEC, and more!

LaurieWired

403,177 views • 9 months ago

1:21

my 2025 predictions in computer science

LaurieWired

628,359 views • 1 year ago

18:14

ignore the rumors, computer science is still cool here's my predictions for 2026

LaurieWired

132,619 views • 3 months ago

0:32

Open Source isn't going to help. There's a way to invisibly compromise all software. A perfect, self-replicating "sin" passed down for generations of compilers. It's not just theoretical, and Ken Thompson showed us how.

LaurieWired

264,543 views • 7 months ago

0:35

Merry Christmas everyone!

LaurieWired

158,472 views • 5 months ago

0:24

One of the best glimpses of chip fabrication comes from a music video. Such Great Heights from The Postal Service has some incredibly rare footage of wafer handling in Skywork’s RF power-amplifier fab. Filming inside (real) cleanrooms almost never happens.

LaurieWired

160,658 views • 5 months ago

0:46

can you guess which one is me? (hint I'm always the shortest)

LaurieWired

110,452 views • 3 months ago

$What happens if we can't make another CPU...ever? How long would datacenters last? Does the Internet start to fracture? Of course, it's a hypothetical thought experiment. But it's interesting to think about:$

13:42

What happens if we can't make another CPU...ever? How long would datacenters last? Does the Internet start to fracture? Of course, it's a hypothetical thought experiment. But it's interesting to think about:

LaurieWired

200,606 views • 8 months ago

0:36

Just built an MCP for Ghidra. Now basically any LLM (Claude, Gemini, local...) can Reverse Engineer malware for you. With the right prompting, it automates a ton of tedious tasks. One-shot markups of entire binaries with just a click. Open source, on Github now.

LaurieWired

284,079 views • 1 year ago

0:40

This music video can crash your computer. It even has its own CVE number (CVE-2022-38392). Janet Jackson’s “Rhythm Nation” contains specific resonant frequencies that cause errors on certain 5400rpm hard drives. Play at your own risk.

LaurieWired

215,997 views • 10 months ago

0:20

pretty proud of how my DIY F16 MFD came out using it to demonstrate some C++ aircraft coding standards for my next video!

LaurieWired

126,428 views • 6 months ago

0:41

Dave Jones easy, mr. linux himself uses fedora

LaurieWired

92,020 views • 4 months ago

Live Cam

LaurieWired

Shorts

We take randomness for granted. Early PRNGs were BAD. Thousands of scientific papers used to rely on RANDU, created by IBM in the 1960s. In 1D space, it looks ok! Map in 3D…you start to see the issues. Now, there *was* a better solution...but it would cost you.

Every year shopify makes a website tracking the massive surge in compute on black friday. Right now they are tracking ~45+ million Kafka requests per second, and about 88,000 gigabytes of data per minute. (it's also just a really cool website)

hey! this might help you, you don’t have to FTP elf files and manually load them like that, you can use PS2link and push elfs directly across the network. I even have it setup where I have a virtual memory card that triggers FMCB to auto-load PS2Link, so you can rapidly iterate on real hardware

I promise this relates to RAM (you'll find out in my next video)

Modern tech tends to focus on “more”. More data. More bandwidth. More compute. The best software engineering happens in the “less” sphere; codec engineering. Listen to this stream with 90% packet loss. The Opus Encoder team is cracked:

Sharks love our undersea cables. Some suspect the weak, low-frequency fields attract sharks like distressed fish. Fiber optics are particularly tasty; AT&amp;T expressed no incidents with “old [copper] cables”. In the 80s, telecoms called the incident Jaw's Syndrome.

It's hot out there today guys. Don't forget to keep your servers cool with a nice hose-down.

Absurd as it sounds, with smaller experiments it was completely worth it to: - Buy the book - Open a random page - Mark your starting point with a pen - Hand Type / Punch the data into cards

Is your compiler a boy or a MAN? Created by Donald Knuth, it’s a test to check if recursion is implemented properly. Originally written in ALGOL 60, a precursor to C, but can adapt to nearly any language. It really stresses the stack and heap, pushing insane call depths:

it's not every day you get to touch a Cray-2 supercomputer

Wanna know something wild? You can still reproduce a (similar) issue on modern systems. - Open a large file on notepad (not fullscreen) - Select text while scrolling down - Wiggle the mouse and notice the speed difference

This pokemon clone is stored inside a font. Yes, an *actual* font; think Times New Roman. As expected, it's playable anywhere you use fonts. A text document, code editor, etc. The full game takes about ~20 minutes to play, an hour if you find all the secrets. But how?

Videos

Watch Anya Live

someone built a Linux CPU scheduler that makes scheduling decisions based on planetary positions and zodiac signs it actually works haha:

Programming Isn't Math, It's Linguistics. Compilers and Humans have the same problem. We're all terrible at understanding each other. Join me for some formal language theory, a lot of C++, and some "recreational" insults.

You play doom with a CPU. I play doom with CPU usage. we are not the same

This...is Programming Like a Fighter Pilot. A single unhandled exception destroyed a $500 million rocket in seconds. The F-35 wasn't going to make the same mistake. By carefully slicing C++, engineers created one of the strictest coding standards ever written.

Gen Z doesn't Understand Filesystems. It's not their fault. Apple's early abstraction of mobile data storage has caused...confusion to say the least. But what does the *real* iOS filesystem look like? As a researcher myself; it's kind of insanely complicated:

Telephone Hold music sounds really bad. Mostly because it’s mapping complex instruments to a human throat. Many phone lines these days use CELP, Code-Excited Linear Prediction algorithms. Music breaks down in weird ways when you turn a piano into…speech.

Fading out audio is one of the most CPU-intensive tasks you can possibly do! When numbers get really small, the number of CPU operations can explode 100-fold. In this LaurieWired video, we'll explore the IEEE 754 standard, the fight between Intel and DEC, and more!

my 2025 predictions in computer science

ignore the rumors, computer science is still cool here's my predictions for 2026

Open Source isn't going to help. There's a way to invisibly compromise all software. A perfect, self-replicating "sin" passed down for generations of compilers. It's not just theoretical, and Ken Thompson showed us how.

Merry Christmas everyone!

One of the best glimpses of chip fabrication comes from a music video. Such Great Heights from The Postal Service has some incredibly rare footage of wafer handling in Skywork’s RF power-amplifier fab. Filming inside (real) cleanrooms almost never happens.

can you guess which one is me? (hint I'm always the shortest)

What happens if we can't make another CPU...ever? How long would datacenters last? Does the Internet start to fracture? Of course, it's a hypothetical thought experiment. But it's interesting to think about:

Just built an MCP for Ghidra. Now basically any LLM (Claude, Gemini, local...) can Reverse Engineer malware for you. With the right prompting, it automates a *ton* of tedious tasks. One-shot markups of entire binaries with just a click. Open source, on Github now.

This music video can crash your computer. It even has its own CVE number (CVE-2022-38392). Janet Jackson’s “Rhythm Nation” contains specific resonant frequencies that cause errors on certain 5400rpm hard drives. Play at your own risk.

pretty proud of how my DIY F16 MFD came out using it to demonstrate some C++ aircraft coding standards for my next video!

Dave Jones easy, mr. linux himself uses fedora

We take randomness for granted. Early PRNGs were BAD. Thousands of scientific papers used to rely on RANDU, created by IBM in the 1960s. In 1D space, it looks ok! Map in 3D…you start to see the issues. Now, there was a better solution...but it would cost you.

Sharks love our undersea cables. Some suspect the weak, low-frequency fields attract sharks like distressed fish. Fiber optics are particularly tasty; AT&T expressed no incidents with “old [copper] cables”. In the 80s, telecoms called the incident Jaw's Syndrome.

This pokemon clone is stored inside a font. Yes, an actual font; think Times New Roman. As expected, it's playable anywhere you use fonts. A text document, code editor, etc. The full game takes about ~20 minutes to play, an hour if you find all the secrets. But how?

Gen Z doesn't Understand Filesystems. It's not their fault. Apple's early abstraction of mobile data storage has caused...confusion to say the least. But what does the real iOS filesystem look like? As a researcher myself; it's kind of insanely complicated:

Just built an MCP for Ghidra. Now basically any LLM (Claude, Gemini, local...) can Reverse Engineer malware for you. With the right prompting, it automates a ton of tedious tasks. One-shot markups of entire binaries with just a click. Open source, on Github now.