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Julia GPU
Lambdaclass's blog about distributed systems, machine learning, compilers, operating systems, security and cryptography.
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The latest blog posts to take off on Hacker News. 14,543 posts.
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Fast UTF-8 validation
One of the most common "data type" in programming is the text string. When programmers think of a string, they imagine that they are dealing with a list or an array of characters. It is often a "good enough" approximation, but reality is more complex. The characters must be encoded into bits in some way. Most ……
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Just Write the Parser
Tiark Rompf is an Associate Professor at Purdue University. Notes and blog posts on programming, research, CS, software systems.
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Assorted Thoughts on Zig and Rust
I've been using zig for ~4 months worth of side projects, including a toy text editor and an interpreter for a relational language . I've written ~10kloc.
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Better Git diff output for Ruby, Python, Elixir, Go
A small tweak to your Git config that will make the diff output smarter and more language aware
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Python For Feature Film
A look into how Python is used to bring your favorite movies to the big screen.
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Monospace: A JavaScript demo in 1021 bytes, winner of the demo competition
MONOSPACE: Flip dots with feelings, a JavaScript demo in 1021 bytes, winner of the 1024 bytes demo competition at Assembly 2020.
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Managing Technical Quality in a Codebase
If there’s one thing that engineers, engineering managers, and technology executives are likely to agree on, it’s that there’s a crisis of technical quality. One diagnosis and cure is easy to identify: our engineers aren’t prioritizing quality, and we need to hire better engineers or retrain the ones we have. Of…
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C++ still isn't cutting it
A blog about computer science, systems, technology, and sometimes vegan cooking.
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Object Detection at 1840 FPS with TorchScript, TensorRT and DeepStream
In this article we take performance of the SSD300 model even further, leaving Python behind and moving towards true production deployment technologies: TorchScript, TensorRT and DeepStream. We also identify and understand several limitations in Nvidia’s DeepStream framework, and then remove them by modifying how the…
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How Does a C Debugger Work? (2014)
Debugging, GNU± Linux and WebHosting and ... and ...
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Does C++ still deserve a bad rap?
Traditionally C++ has been seen by many (and you know who you are) as just plain bad: the code is unreadably verbose, error messages are und...
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Porn, Zen, and .vimrc
Vim is a customizable text editor geared towards writing code. But open-ended configuration possibilities lure users into wasting time while chasing after perceived minute gains in productivity. This article describes my Vim journey, starting from heavy personal customization and ending with a renewed love for…
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What if we had Local-First Software?
The path to an offline SaaS model
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Reverse Engineer Amazon's Whispersync
I am a big fan of my Kindle. This is the device I’d bring over to a desert island. I am also a fairly frequent user of the highlight feature where you can select a bit of text you like and save it. One thing is bothering me though: the lack of open API on the Kindle to retrieve the data about me. Amazon provides the…
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LDM: My Favorite ARM Instruction
LDM—or load multiple —is my favorite assembly instruction of the ARM instruction set. Here’s why.
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Unifying the Technical Interview
Aisha’s hands rattle you. They float gently in front of her shoulders, wrists cocked back. One sways cheerfully as she banters with the hiring manager—her lacquered nails a cyan mosaic over ochre palms. They flit, then hover momentarily as the two women arrange lunch. When the door closes, Aisha slaps her fingertips…
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Prefer Fakes over Mocks
The primary purpose of software testing is to detect any potential defects in a program before it reaches its intended consumers. This is typically achieved by establishing functional requirements which define supported user interactions as well as…
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14,000x Speedup (2015)
In my job as a scientific software developer, I tend to write a lot of code. And most people who haven’t been through a Computer Science degree tend to think that CS is “just” about slinging code at the screen and then running it. I have a good working relationship with many of my colleagues and co-workers with other…
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Towards Tactic Metaprogramming in Haskell
Isn’t it weird that we treat source code as text? That is, we have this extremely well-structured and strongly-typed object — the abstract syntax tree — that exists conceptually in our minds, and in actuality inside of our compiler, but for some reason we pretend it’s just a pile of bytes and edit it byte-by-byte…
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I Tried to Reduce Pylint Memory Usage
Through work I have to deal with a pretty huge codebase, and run Pylint on it during our continuous integration process. It's always been a bit slow, but recently I also noticed that it was consuming a lot of memory, causing OOM failures if we tried to run it too much in parallel.
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PyOxidizer 0.8
I am very excited to announce the 0.8 release of PyOxidizer , a modern Python application packaging tool. You can find the full changelog in the docs . First time user? See the Getting Started documentation.
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Basic Concepts in Unity for Software Engineers
Unity game development guide for software engineers. Start from first principles with scenes, game objects, components, and serialization.
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Rust After the Honeymoon
Two years ago, I had a blog entry describing falling in love with Rust . Of course, a relationship with a technology is like any other relationship: as novelty and infatuation wears off, it can get on a longer term (and often more realistic and subdued) footing – or it can begin to fray. So well one might ask: how is…
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Creating a Slack app that uses fewer resources
I recently created a macOS app called Slack Lite, which beats Slack's desktop app across a few performance metrics. Slack Lite uses Slack's official UI, so it's visually indistinguishable from the official client. Even so, Slack Lite uses 5x fewer threads, 3.5x less time to startup, and significantly less CPU. In the…
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Reversing the technical interview (2017)
If you want to get a job as a software witch, you’re going to have to pass a whiteboard interview. We all do them, as engineers–often as a part of our morning ritual, along with arranging a beautiful grid of xterms across the astral plane, and compulsively running ls in every nearby directory–just in case things have…