Maxime Chevalier @Love2Code Twitter profile

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Maxime Chevalier

3 years

NoiseCraft: a Browser-Based Visual Programming Language for Sound & Music

NoiseCraft: a Browser-Based Visual Programming Language for Sound & Music

I’ve recently resumed work on a side-project I started back in 2019 to create a browser-based visual programming language for sound synthesis and music. I was initially hoping to make this a …

pointersgonewild.com

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Maxime Chevalier

@Love2Code

5 years

When all you have is gradient descent, everything looks like a differentiable function.

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Maxime Chevalier

@Love2Code

1 year

Rust has strengths, but imo, the added cognitive overhead and syntactic noise of having to deal with things like Rc<RefCell<Box<MyType>>> and borrowing vs mutable borrowing are a huge step backwards in terms of usability. Completely sacrifice ergonomics to please the PLT gods.

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Maxime Chevalier

@Love2Code

5 months

Understanding C can genuinely help you understand how computers work on a deeper level. Is it the only way? No. But it's an effective way to deepen your understanding. There are fundamental concepts you may never grasp if you've never used a systems language, eg cache locality.

Glitchbyte

@0xglitchbyte

5 months

“You dont need to learn C, I didnt” Anyone telling you that is limiting you in favor of their ego Most of the worlds software is in C/C++ Operating systems, browsers, game engines, your favorite programming language Is most likely written in C/C++ It certainly helps to

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Maxime Chevalier

@Love2Code

3 years

My teammates and I are working on building a Ruby JIT compiler inside MRI at Shopify, and we're hiring. If that sounds interesting to you and you think you might like to work with me on this project, please reach out :) #compilers

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Maxime Chevalier

@Love2Code

2 years

Compiler design is like the plumbing of computer science. It's hard work and it's not a "sexy" trendy field but it will never stop being needed.

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Maxime Chevalier

@Love2Code

5 years

I've come to realize that feeling useful is a basic human need. When I don't feel like I'm contributing something worthwhile, working on something I truly believe in, I feel terrible. It may seem obvious to you, but I didn't realize this until I was past 30.

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Maxime Chevalier

@Love2Code

3 years

How Tesla trains its 100% pure vision self-driving car neural network - Andrej Karpathy at CVPR 2021 Workshop on Autonomous Vehicles - YouTube

Andrej Karpathy (Tesla): CVPR 2021 (see description for better...

Better quality version: https://youtu.be/g6bOwQdCJrc

www.youtube.com

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Maxime Chevalier

@Love2Code

1 year

Zig is working on implementing its own backend to replace LLVM 🤔 As someone with experience implementing a compiler backend, I think that getting an MVP working is not that hard, but beating LLVM's performance will take a lot of work.

make the main zig executable no longer depend on LLVM, LLD, and Clang libraries · Issue #16270 ·...

This issue is to fully eliminate LLVM, Clang, and LLD libraries from the Zig project. The remaining ties to these projects are as follows: #8726 #8727 #17749 #17751 #17750 LLVM #13265 C backend - 1...

github.com

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Maxime Chevalier

@Love2Code

4 months

An underrated performance advantage that systems languages have (vs say Java) is the ability to design tightly packed memory layouts. If your program needs to access lots of data, memory bandwidth and cache efficiency starts to matter. In C/Rust, you can make every bit count.

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Maxime Chevalier

@Love2Code

5 years

Zupiter: a Web-Based Modular Synthesizer

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Maxime Chevalier

@Love2Code

3 months

I hate it when languages try to be "smart" and return some weird type when I'm expecting an array/list. It's super awkward to have to deal with some LazyWeirdVoodooShitIterator or FunkyWeirdIterable that's not interchangeable with a normal f'ing list.

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Maxime Chevalier

@Love2Code

2 years

I'm really excited that our Ruby JIT compiler is now part of Ruby 3.2 & live in production, serving requests all across the world. Thanks Shopify, Ruby & Rails Infrastructure, and Ruby Core for the opportunity to lead a dream team and the support to make all of this possible!

tobi lutke

@tobi

2 years

All storefront requests are now served by the latest version of ruby with YJIT enabled! We are seeing ~10% speedups across the board. YJIT that has been developed by @Love2Code 's and team at Shopify.

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Maxime Chevalier

@Love2Code

2 years

The Tesla Semi according to #stablediffusion

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Maxime Chevalier

@Love2Code

3 months

Functional programming means algebraic thinking. Algebraic thinking requires types to be as interchangeable as possible. Interchangeable types means fewer types. Therefore, functional programming should by definition strive towards minimalism. Fewer types, less complexity.

Maxime Chevalier

@Love2Code

3 months

I hate it when languages try to be "smart" and return some weird type when I'm expecting an array/list. It's super awkward to have to deal with some LazyWeirdVoodooShitIterator or FunkyWeirdIterable that's not interchangeable with a normal f'ing list.

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Maxime Chevalier

@Love2Code

3 years

VSCode is becoming an operating system. It has a file browser, a package manager, auto updates, a privilege system (trusted windows) a weird shell (command palette) and the ability to connect to remote machines.

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Maxime Chevalier

@Love2Code

3 months

I will not fear. Fear is the code killer. Fear makes you a worse programmer - Julia Evans

Fear makes you a worse programmer

jvns.ca

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Maxime Chevalier

@Love2Code

1 month

The obsession with "memory safety" is annoying 1. How provably safe is your program if it's full of unsafe blocks? 2. There are many other kinds of safety besides "memory safety". Eg you can't claim that your system is "safe" if it can panic at any time

Therac-25 - Wikipedia

en.wikipedia.org

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Maxime Chevalier

@Love2Code

3 years

The idea that more data will automatically lead to deep learning outperforming humans is very much cargo cult IMO. Bigger scale isn't always the answer. It's possible that your model, because of its structure, can't make the inferences necessary to solve the problem effectively.

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Maxime Chevalier

@Love2Code

2 years

To those who write C++ on a regular basis, do you feel like the language has improved with recent additions or gotten worse? My (outside) impression is that C++ keeps getting more complex and it's not a good thing. AFAIK C++20 modules are still incomplete in GCC and Clang.

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Maxime Chevalier

@Love2Code

7 years

People like pseudoscience because contrarily to real science, it requires no effort to understand, and it has an answer to every question.

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Maxime Chevalier

@Love2Code

2 years

I'm coding a toy programming language in Rust. Just me and the code. It's nice to write code just for fun. It's going to have a top-down recursive descent parser that will parse a JS-like syntax directly into bytecode, without a lexer, and without building an AST.

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Maxime Chevalier

@Love2Code

7 days

Beating the L1 cache with value speculation

mazzo.li

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Maxime Chevalier

@Love2Code

7 years

"A scientist converts money into ideas. An engineer converts ideas into money." -- Dana Bookbinder

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Maxime Chevalier

@Love2Code

9 years

Free Type Theory, Programming Language and Functional Programming Books by steshaw #cs #plt

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Maxime Chevalier

@Love2Code

3 years

x86-bare-metal-examples: Dozens of minimal operating systems to learn x86 system programming. #osdev

GitHub - cirosantilli/x86-bare-metal-examples: Dozens of minimal operating systems to learn x86...

Dozens of minimal operating systems to learn x86 system programming. Tested on Ubuntu 17.10 host in QEMU 2.10 and real hardware. Userland cheat at: https://github.com/cirosantilli/linux-kernel-modu...

github.com

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Maxime Chevalier

@Love2Code

3 months

Sharing some thoughts to save younger programmers from falling into a common trap: The Alternative Implementation Problem

The Alternative Implementation Problem

In this post, I want to talk about a dynamic that I’ve seen play itself over and over again in the software world. In fact, I would venture a guess that this kind of situation probably happen…

pointersgonewild.com

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Maxime Chevalier

@Love2Code

5 years

An Introduction to Deep Reinforcement Learning (PDF book manuscript, Nov 2018)

An Introduction to Deep Reinforcement Learning

Deep reinforcement learning is the combination of reinforcement learning (RL) and deep learning. This field of research has been able to solve a wide range of complex decision-making tasks that...

arxiv.org

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Maxime Chevalier

@Love2Code

1 year

Memory, Pages, mmap, and Linear Address Spaces

We don’t always think of it this way, but on modern machines, memory and pointers are an abstraction. Today’s machines have virtual memory, divided in blocks called “pages”,…

pointersgonewild.com

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Maxime Chevalier

@Love2Code

5 years

Bought the audiobook "the 48 laws of power"... Then returned it. Had glowing reviews, but it's a book about how to subtly but efficiently fuck people over while always looking over your shoulder. I can't live my life like that. I don't think it's good for anyone's mental health.

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Maxime Chevalier

@Love2Code

2 years

Here's a personal story of how, growing up in poverty, the internet changed my life.

The Internet Changed My Life

I’ve seen multiple discussions online as to the negative effects of the internet on society. There’s definitely harmful content online. It makes me sad to see the internet being used as a tool to s…

pointersgonewild.com

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Maxime Chevalier

@Love2Code

8 years

Was hoping to get some verbose output from pkill, ran `pkill -9 -v process_name`. Ho boy.

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Maxime Chevalier

@Love2Code

9 months

Took me a while but I managed to get this working on my little VM. A grid that smoothly scrolls towards the camera, with perspective projection, and an HSL sky gradient, compiled by my toy C compiler to UVM's bytecode format, rendering at 160FPS :D Cue Tron Legacy - The Grid

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Maxime Chevalier

@Love2Code

3 years

YJIT: Building a New JIT Compiler Inside CRuby

The 1980s and 1990s saw the genesis of Perl, Ruby, Python, PHP and JavaScript: interpreted, dynamically-typed programming languages which favored ease of use and flexibility over performance. In ma…

pointersgonewild.com

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Maxime Chevalier

@Love2Code

9 months

Our paper on YJIT, the basic block versioning JIT compiler we built and merged into CRuby at @ShopifyEng is now freely available :)

YJIT: a basic block versioning JIT compiler for CRuby | Proceedings of the 13th ACM SIGPLAN...

dl.acm.org

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Maxime Chevalier

@Love2Code

7 years

New prototype of my LED wake up light. Gradually fades in. Controlled by an ESP8266 wifi microcontroller :)

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Maxime Chevalier

@Love2Code

8 months

@ylecun @cdossman You're making the wrong comparison. Genome encodes structure and initialization. The structure of an LLM is encoded by its source code, which can fit in only a few tens of kilobytes. Also, chimps may not have our language skills, but they're incredibly smart.

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Maxime Chevalier

@Love2Code

2 years

Tiny renderer or how OpenGL works: software rendering in 500 lines of code - Dmitry V. Sokolov -

Home

A brief computer graphics / rendering course. Contribute to ssloy/tinyrenderer development by creating an account on GitHub.

github.com

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Maxime Chevalier

@Love2Code

8 months

It's not just about peak performance. YJIT is the most memory-efficient Ruby JIT :)

YJIT Is the Most Memory-Efficient Ruby JIT

This year, the YJIT team and I have gotten a paper accepted at MPLR 2023 (Managed Programming Languages and Runtimes), which is now freely available through ACM open access. The paper, titled...

railsatscale.com

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Maxime Chevalier

@Love2Code

2 months

I've been getting the sense, talking to people, that users are updating to the latest Ruby so they can use YJIT and get associated performance gains. A few years ago, it was common to be several Ruby versions behind. Now big companies are on the latest. Performance is a feature!

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Maxime Chevalier

@Love2Code

1 year

I wrote a blog post/rant about Software Bugs That Cause Real-World Harm

Software Bugs That Cause Real-World Harm

Years ago, when I was an undergraduate student at McGill, I took a software engineering class, and as part of that class, I heard the infamous story of the Therac-25 computer-controlled radiotherap…

pointersgonewild.com

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Maxime Chevalier

@Love2Code

7 years

ZetaVM, my new compiler project

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Maxime Chevalier

@Love2Code

3 years

Nick Bostrom popularized a thought experiment where an AI is tasked to maximize production of paperclips, consumes the known universe in the process. ... Just replace paperclips with crypto. A huge chunk of the silicon produced by TSMC is going into GPUs for crypto mining.

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Maxime Chevalier

@Love2Code

6 years

Minimalism in Programming: how to Minimize Risk and Maximize Success

Minimalism in Programming

I’m 32, and I’ve been programming actively for over 16 years at this point. I don’t have a lifetime of experience doing this, but over the years, I’ve come to develop a cert…

pointersgonewild.com

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Maxime Chevalier

@Love2Code

8 years

Let's code a TCP/IP stack, 1: Ethernet & ARP #systems #networking

Let's code a TCP/IP stack, 1: Ethernet & ARP

Writing your own TCP/IP stack may seem like a daunting task. Indeed, TCP has accumulated many specifications over its lifetime of more than thirty years. The core specification, however, is seemingly...

www.saminiir.com

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Maxime Chevalier

@Love2Code

1 year

Thanks to the sustained hard work of my teammates on the YJIT team and in Ruby & Rails Infrastructure, we've been able to speed up end-to-end request times on Shopify's StoreFront Renderer (SFR) by as much as 17% on average, and even the p99 request time is faster! @ShopifyEng

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Maxime Chevalier

@Love2Code

3 years

Why that's exactly the kind of cable I need, a computer cable!

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Maxime Chevalier

@Love2Code

4 months

The idea that all programming will soon be automated by AI, so we don't need teach programming, or care about code complexity, fixing problems, etc... It's a bit like thinking, AI will soon be generating all content, so no need to write or learn critical thinking? Just consume.

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Maxime Chevalier

@Love2Code

3 years

When in doubt, use printf()

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Maxime Chevalier

@Love2Code

3 years

Excited to be giving a talk at @RubyConf in Denver next month!

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Maxime Chevalier

@Love2Code

5 years

Users keep reporting issues running my gridworld headlessly on clusters due to the PyQT dependency, so I'm building a renderer using NumPy only. No more PyQT, and no xvfb needed to produce an rgb array. Still 1200+ FPS with one thread 👌. #minimalism

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Maxime Chevalier

@Love2Code

3 years

I feel like there could be a market for a premium brand of Linux laptops. Slightly higher cost for high quality hardware, good battery life, with Linux and development tools preinstalled, known working drivers and config, no bloatware. Something pragmatic, for professional devs.

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Maxime Chevalier

@Love2Code

6 years

Code that I wrote on a machine with Python 3.5 doesn't run on machines with Python 3.4. They added new unpacking syntax in 3.5 which I had been relying on. Getting Python code to run reliably everywhere is an effing nightmare, and it's because of things like this.

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Maxime Chevalier

@Love2Code

1 year

During my PhD, there's one specific paper that got rejected 3 times before being accepted. Each iteration, me and my advisor spent 4 to 6 months working on. We worked hard, believed in our work, reviews seemed unfair. I cried every single time that paper got rejected.

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Maxime Chevalier

@Love2Code

6 years

Am I the only one who misses the more lighthearted sci-fi shows of the past (eg: Stargate, TNG)? Seems nowadays everything has to be dark, gritty and depressing. Me, I think there's enough drama in the real world, I don't really need fictional shit to worry about.

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Maxime Chevalier

@Love2Code

4 years

We have no way to inspect modern CPUs for hardware backdoors as they are way too small/complex, but I was thinking: if you could fab a simple 32-bit RISC-V chip with an older process, with a single silicon layer, it might be possible to inspect it with a plain microscope.

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Maxime Chevalier

@Love2Code

5 years

Seems to me unless you're pasting data from the same program you copied it from, "paste without formatting" should probably be the default. You should have users right-click for "paste with formatting" instead.

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Maxime Chevalier

@Love2Code

8 months

When it comes to interpreters/CPUs/VMs, I often see people mixing up the definition of "instruction" and "opcode". An opcode is the kind of operation you want to perform (e.g. add). An instruction includes an opcode and potentially multiple operands (arguments).

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Maxime Chevalier

@Love2Code

8 months

Yann LeCun fails to appreciate how much complexity can be encoded in a relatively small program. Needs to watch a few 64KB demos and come back:

the timeless - mercury | Revision 2014 | 64k

1st place in pc 64k compo at Revision 2014Credits:code: las, red, cupe, ursmusic: redvisuals: cupe, ursgfx: psykonMore info and download on Pouet:http://www....

www.youtube.com

Yann LeCun

@ylecun

8 months

@cdossman I'm not. There just isn't enough capacity in the genome. Your entire genome fits in 800MB (uncompressed). The difference between the human and chimp genomes is 1% of that, or 8MB. Not enough to encode a significant structure. For comparison, a small 7B LLM requires 14GB.

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Maxime Chevalier

@Love2Code

2 years

@tobi I was secretly hoping you'd publicly announce it so I could tell my friends and celebrate this a little bit during the holiday ^_^ Thanks for creating a culture that supports risky bets Tobi! :)

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Maxime Chevalier

@Love2Code

4 months

Arc and Mutex in Rust - It's all about the bit

Arc and Mutex in Rust

itsallaboutthebit.com

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Maxime Chevalier

@Love2Code

4 years

People act like the rise of locked-in computing ecosystems is inevitable. It's not inevitable if you do something about it. There will always be a need for open systems, both for developers, and for businesses who don't want vendor lock-in or price gouging.

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Maxime Chevalier

@Love2Code

8 years

Last week was one of the most stressful weeks of my life, but I've just completed an important step. I defended my thesis. I got my PhD!

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Maxime Chevalier

@Love2Code

8 years

Paper by Wu & Tian on a deep neural network that plays Doom (PDF) -

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Maxime Chevalier

@Love2Code

4 years

I'm working on a programming language slash IDE for sound synthesis (similar vein to csound/supercollider), and I was wondering if you guys could help me find a cool name for it. Please reply with ideas :)

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Maxime Chevalier

@Love2Code

6 years

Building a Simple Self-Driving Car Simulator

As part of my new job, I’ve been working with Professor Liam Paull and his students on building a simulator for Duckietown. This is a university course being taught at ETH Zurich, the Univers…

pointersgonewild.com

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Maxime Chevalier

@Love2Code

6 years

I’ve used this sound card for over 17 years. Bought it on September 11, 2001 and carried it from one computer upgrade to another. Sadly now switching to a motherboard that doesn’t have PCI slots! I hope the onboard sound on this one isn’t as noisy as it usually is.

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Maxime Chevalier

@Love2Code

2 years

Once we get to the point where machines can design machines, they're quickly going to evolve into something we can no longer understand (or troubleshoot). We'd better be god damn sure we didn't leave any bugs in the code... Good thing humans are so good at writing bug-free code.

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Maxime Chevalier

@Love2Code

7 years

The Matrix Cookbook - a collection of facts, identities, and approximations about matrices (PDF document)

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Maxime Chevalier

@Love2Code

3 years

Finally got this working OK. Beat detection with aubio running on a Raspberry Pi 4B, and an Enttec OpenDMX to control small RGBW fixtures :)

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Maxime Chevalier

@Love2Code

5 years

Robot based on Nvidia Jetson is now mobile!

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Maxime Chevalier

@Love2Code

6 years

Decided to buy a Tesla. This one was right in my price range!

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Maxime Chevalier

@Love2Code

3 years

Making CPUs happy :)

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Maxime Chevalier

@Love2Code

2 years

Many people seem to have this cynical attitude that if you can't immediately beat the state of the art, it's not worth doing. That attitude is completely idiotic and anti-progress.

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Maxime Chevalier

@Love2Code

4 years

A Deep Introduction to JIT Compilers: JITs are not very Just-in-time - Carol's Blog

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Maxime Chevalier

@Love2Code

7 years

How do #compilers optimize (integer) divisions? — fcd

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Maxime Chevalier

@Love2Code

5 years

Today’s accomplishment: getting a Jetson Nano to run stably off of lithium ion cells. Most of the buck converters I tried didn’t cut it. Chinese parts off ebay tend to exaggerate their specs.

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Maxime Chevalier

@Love2Code

6 years

x86-64 Assembly Language Programming with Ubuntu (free PDF textbook) #compilers

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Maxime Chevalier

@Love2Code

7 years

Crafting Interpreters - A handbook for making programming languages

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Maxime Chevalier

@Love2Code

8 months

The Danger of Atomic Operations - abseil #systems

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Maxime Chevalier

@Love2Code

2 years

I've been writing a toy C compiler for fun, and the Compiler Explorer tool is a godsend. Thanks @alanwusx for introducing me to this great tool! :)

Compiler Explorer

godbolt.org

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Maxime Chevalier

@Love2Code

3 years

Branch predictor: How many "if"s are too many? Including x86 and M1 benchmarks! - Cloudflare Blog

Branch predictor: How many "if"s are too many? Including x86 and M1 benchmarks!

Is it ok to have if clauses that will basically never be run? Surely, there must be some performance cost to that...

blog.cloudflare.com

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Maxime Chevalier

@Love2Code

7 years

I need a t-shirt that says "smooth operator", and has a plot of f(x) = tanh(x). Please someone design this if you have the time :)

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Maxime Chevalier

@Love2Code

6 months

Nobody should ever buy wifi-connected appliances.

Johnie

@Johnie

6 months

WTF! Why is my LG Washing Machine using 3.6GB of data/day?

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@Love2Code

5 years

Bought a stationary bike and was horrified to find after assembling it that you need to sign up for a paying monthly subscription to "activate" it. You can cancel after, but they make it hard, and they force you to enter your CC number to get the bike working. Scammy as fuck.

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Maxime Chevalier

@Love2Code

9 years

ASCII fluid dynamics demo - IOCCC2012 - endoh1.c - YouTube

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Maxime Chevalier

@Love2Code

6 years

Hacked this last night and thought it was pretty amusing: spreadsheet music, sequencing music with a spreadsheet editor ;)

(Spread)sheet Music: Live Jam using a Spreadsheet Program as a...

Just a little hack I made for fun. Using a CSV spreadsheet to sequence music. The code is written in Python and uses the mido package for MIDI output. The au...

www.youtube.com

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Maxime Chevalier

@Love2Code

9 years

Want to Write a Compiler? Just Read These Two Papers. - prog21 #compilers

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Maxime Chevalier

@Love2Code

4 years

My label printer kept killing batteries while not in use so I fixed that flaw with a hardware switch 👌

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Maxime Chevalier

@Love2Code

3 years

I'll be giving a talk about YJIT next month at the upcoming @rubykaigi 2021 virtual conference! @ShopifyEng

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Maxime Chevalier

@Love2Code

8 years

Shit. I won the auction. Now what the fuck am I going to do with this?

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Maxime Chevalier

@Love2Code

3 years

I used to be kind of addicted to YouTube, watching way too many videos everyday, but the recommendation algorithm is so terrible, always re-feeding you more of the same, that the problem seems to have taken care of itself. I open up the app and instantly feel bored.

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Maxime Chevalier

@Love2Code

4 years

I got an electrician to come do the wiring so I can have a permanently installed disco ball in my living room. There's a switch on the wall controlling the motor and an RGB LED projector. The motor is embedded into the ceiling 🕺💃

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Maxime Chevalier

@Love2Code

5 years

Google Maps keeps informing me that my daily walk to work is a 3 minute drive, with no traffic. I guess people in Mountain View can't imagine walking places.

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Maxime Chevalier

@Love2Code

2 years

How Atari 2600's Pitfall Game Represents its World with One Single Byte #gamedev

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Maxime Chevalier

@Love2Code

2 years

Why is Rosetta 2 fast? - Dougall J #systems

Why is Rosetta 2 fast?

Rosetta 2 is remarkably fast when compared to other x86-on-ARM emulators. I’ve spent a little time looking at how it works, out of idle curiosity, and found it to be quite unusual, so I figur…

dougallj.wordpress.com

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Maxime Chevalier

@Love2Code

9 years

Your idea, it's been done before, in Smalltalk or Lisp back in 1973, but unfortunately they lost magnetic tape the source code was on.

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Maxime Chevalier

@Love2Code

8 years

My PhD thesis is now online: On the Fly Type Specialization without Type Analysis (PDF) ^_^ #compilers

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Maxime Chevalier

@Love2Code

6 years

@ecuageek @InsideEVs @elonmusk "No, it's an electric car. The gasoline is just for the flamethrower."

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Maxime Chevalier

@Love2Code

3 months

@AgileJebrim I feel like this is terrible on multiple levels. This is not code that ever needs to be optimized for performance, and doing SIMD intrinsics by hand should be reserved for the most performance-critical kernels.

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