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…
Perhaps the most interesting part of the open RISC-V instruction set architecture (ISA) is the vector extension (RISC-V "V"). In contrast to the average single-instruction multipe-data (SIMD) instruction set, RISC-V vector instructions are vector length agnostic (VLA). Thus, a RISC-V "V" CPU is flexible in choosing a…
The Personal blog and musings of Chris Penner, a designer, developer and future opsimath.
A few months ago, I decided to implement set operations on curved regions. I had the the canonical textbook on computational geometry , which described approaches for polygons comprised of straight lines, and it seemed like other projects had extended these techniques to parametric curves . I figured it would take a…
My cofounder Joe and I recently finished SICP. It was a mind-bending experience: you start from just 3 concepts, and you recursively build up algebraic equation solvers, circuit simulators, 4 interpreters, and a compiler.
How do I synchronize application data between devices and people? That's the question I was unable to answer when thinking about ideas for new applications I could develop. I wanted the synchronization to be
Kenneth Iverson’s 1964 language, APL, won him the Turing Award. His award lecture, Notation as a Tool of Thought, argued that better notations would lead people to deeper insights about mathematics. He provided a number of examples ranging across linear algebra, arithmetic, probability, and logic. Unfortunately, most…
It’s largely known that counting commits and pull requests as a measure of engineering productivity is a bad idea.
And why I am trying to minimize my dependence on external libraries (whenever possible).
One of my favorite languages is the Go language. I love its simplicity. It is popular and useful in a cloud setting. Many popular tools are written in Go, and for good reasons. I gave a talk on Go last year and I was asked for a criticism of Go. I do not mind that … Continue reading The Go compiler needs to be smarter
My manager and I got off on a tangent in our most recent one-on-one on the subject of the durability of design mistakes in programming languages. A particular favourite of mine is the worst of the …
Mike Kohn's music, software, and electronics projects.
This post will give you a quick intro to the basics of GUI programming for SerenityOS.
I have been writing articles on this website for twelve years. If you were to look at the early versions , you would think it is a fresh-out-of-school project with icons drawn in Microsoft Paint. And that is exactly what it was. The site started in a world before smartphones and tablets at a time where Apple products…
I know that floating-point arithmetic is a bit crazy on modern computers. For example, floating-point numbers are not associative: 0.1+(0.2+0.3) == 0.599999999999999978 (0.1+0.2)+0.3 == 0.600000000000000089 But, at least, this is fairly consistent in my experience. You should simply not assume fancy properties like…
I concur so strongly not only because he writes about RSS, which I'm on record as supporting and using. I enjoy rolling my own simple software in almost any domain. Simple has a lot of advantages. Under my control has a lot of advantages. But the biggest advantage echoes what Dr. Drang says: Programming is often more…
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…
Trying to figure out how KVM-based virtual machine hosts work by implementing one from scratch.
As you all may know, I watched and posted my lecture notes of the whole MIT Introduction to Algorithms course. In this post I want to summarize all the topics that were covered in the lectures and point out some of the most interesting things in them. Actually, before I wrote this article, I had started writing an...
Here's a recipe you can follow when you want to add tests on Legacy Code, but you don't have much ti
A guide to effective pair-programming
