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My 2019 Mathematics a to Z: Linear Programming
Today’s A To Z term is another proposed by @aajohannas. I couldn’t find a place to fit this in the essay proper. But it’s too good to leave out. The simplex method, discussed with…
Top posts
Every blog post that took off on Hacker News, ranked by the votes of its best submission. 21,843 posts.
20612
Learn Multiplatform Z80 Assembly Programming with Vampires
Platform Specific Series - Lets learn how the hardware of the systems work, so we can get it to do what we want... Covers Amsrad CPC,MSX,ZX Spectrum, TI-83,Enterprise 128/64 and Sam Coupe! Lesson P1 - Basic Firmware Text functions Lesson P2 - More Text Functions, Improvements... and the Sam Coupe! Lesson P3 - Bitmap…
20613
This Week in Rust 499
Hello and welcome to another issue of This Week in Rust ! Rust is a programming language empowering everyone to build reliable and efficient software. This is a weekly summary of its progress and community. Want something mentioned? Tag us at @ThisWeekInRust on Twitter or @ThisWeekinRust on mastodon.social, or send us…
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JEP 515: Ahead-of-Time Method Profiling
Improve warmup time by making method-execution profiles from a previous run of an application instantly available, when the HotSpot Java Virtual Machine starts. This will enable the JIT compiler to generate native code immediately upon application startup, rather than having to wait for profiles to be collected.
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Semantic Image Segmentation with DeepLab in Tensorflow
Posted by Liang-Chieh Chen and Yukun Zhu, Software Engineers, Google ResearchSemantic image segmentation, the task of assigning a semantic label, s...
20618
Using JAX, numpy, and optimization techniques to improve separable image filters
By the end of this blog post, we aim to improve the results of my previous blog post of approximating circular bokeh with a sum of 4 separable filters and reducing its artifacts (left) through an o…
20619
Subclassing in Python Redux
The conflict between subclassing and composition is as old as object-oriented programming. The latest crop of languages like Go or Rust prove that you don’t need subclassing to successfully write code. But what’s a pragmatic approach to subclassing in Python, specifically?
20620
Cranelift, Part 3: Correctness in Register Allocation
This post is the last in a three-part series about Cranelift . In the first post , I covered overall context and the instruction-selection problem; in the second post , I took a deep dive into compiler performance via careful algorithmic design.
20621
How JavaScript works: The building blocks of Web Workers
PlaybookUX is an all-in-one software that allows you to recruit, conduct and analyze both qualitative and quantitative research, enhanced by AI.
20622
Monotonicity Types: Towards a Type System for Eventual Consistency
A few weeks back, we published a draft of an article entitled _Monotonicity Types_. In it, we describe a type system which we hope can aid the design of distributed systems by tracking monotonicity with types....
20623
Data Parallelism in Rust
Rust currently has very strong support for concurrency in the form of actors which exchange messages and do not share memory. However, there are many tasks for which actors are not a good fit. The unbounded lifetime of actors means that they cannot safely access stack-allocated memory from another task, even if it is…
20624
Programmer’s Guide to Performance Analysis and Tuning on Modern CPUs
They say “performance is king’… It was true a decade ago and it certainly is now. With more and more data the world generates each day, we need more and more computing power to process it. It used to be the case that some SW vendors preferred to wait for a new generation of HW to speed up their application and did not…
20625
F*dging up a Racket
Source code can be found at: https://github.com/dyoo/brainfudge . The latest version of this document lives in http://hashcollision.org/brainfudge .
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Portability of tar features
The tar format is one of the oldest archive formats in use. It comes as no surprise that it is ugly — built as layers of hacks on the older format versions to overcome their limitations. However, given the POSIX standarization in late 80s and the popularity of GNU tar, you would expect the interoperability problems to…
20628
Tailscale-rs: Official Rust library for embedding Tailscale
We've launched an experimental Rust library for Tailscale via tsnet. Help test tailscale-rs and shape it with your feedback.
20629
Emacs: Using SQLite as a Data Source
In this talk, Andrew Hyatt shows how to use SQLite to store and retrieve information using the triples package. Afterwards, he wil handle questions over BigBlueButton.
20630
Anatomy of a High-Performance Convolution
It's no surprise that modern deep-learning libraries have production-level, highly-optimized implementations of most operations. But just what is the black magic that these libraries use that we mere mortals don't? What exactly does one do to "optimize" or accelerate neural networks operations?
20631
Minimal Linux Bootloader debugging story
I maintain two builds of the Linux kernel, a linux/arm64 build for gokrazy, my Go appliance platform, which started out on the Raspberry Pi, and then a linux/amd64 one for router7, which runs on PCs. The update process for both of these builds is entirely automated, meaning new Linux kernel releases are automatically…
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Beginner's Guide to Attention Mechanisms and Memory Networks
SkyMind AI — humanoid robotics and the case for physical AI. Curated rather than complete: deliberate selection, checked content and clear structure…
20635
CamelCase vs. underscores revisited (2013)
It has been 2 years since I published “CamelCase vs underscores: Scientific showdown”, and it still is easily the most visited article on this blog. Yesterday alone it got 2,614 views t…
20636
We might have been slower to abandon StackOverflow if it wasn't a toxic hellhole
What the **** does that mean?
20637
OrmHate
Object-Relational Mappers get a lot of hate from people who misjudge the complexities of the task.
20638
Against Pair Programming
Pair programming is where two programmers work together on a single computer. One writes the code, while the other observes and offers suggestions. I'm not talking about debugging or brainstorming together, but this p...
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C++'s `noexcept` can sometimes help or hurt performance
Over the course of working on PSRayTracing (PSRT), I've been trying to find all sorts of tricks and techniques to squeeze out more performance from this C++ project. Most of it tends to be alternative algorithms, code rewriting, and adjusting data structures. I thought sprinkling the final keyword like an all purpose…