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PyTorch Internals: Ezyang's Blog
This post is a long form essay version of a talk about PyTorch internals, that I gave at the PyTorch NYC meetup on May 14, 2019.
Edward Z. Yang
In Code review as human alignment, in the era of LLMs , I talked about how we should approach code review with other team members, where you have a pre-existing relationship and care about building human-to-human alignment over time. However, popular open source projects also need to account for drive-by contributions…
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What Template Haskell gets wrong and Racket gets right
Why are macros in Haskell terrible, but macros in Racket great? There are certainly many small problems with GHC’s Template Haskell support, but I would say that there is one fundamental design point which Racket got right and Haskell got wrong: Template Haskell does not sufficiently distinguish between compile-time…
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Extremist Programming
Lazy evaluation is awesome. What if we made a PL where every data type was lazy?
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The fundamental problem of programming language package management
Why are there so many goddamn package managers? They sprawl across both operating systems (apt, yum, pacman, Homebrew) as well as for programming languages (Bundler, Cabal, Composer, CPAN, CRAN, CTAN, EasyInstall, Go Get, Maven, npm, NuGet, OPAM, PEAR, pip, RubyGems, etc etc etc). “It is a truth universally…
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How to read Haskell like Python
Have you ever been in the situation where you need to quickly understand what a piece of code in some unfamiliar language does? If the language looks a lot like what you’re comfortable with, you can usually guess what large amounts of the code does; even if you may not be completely familiar how all the language…
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Visualizing dynamic programming
I’ve always thought dynamic programming was a pretty crummy name for the practice of storing sub-calculations to be used later. Why not call it table-filling algorithms , because indeed, thinking of a dynamic programming algorithm as one that fills in a table is a quite good way of thinking about it.
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The convergence of compilers, build systems and package managers
Abstract. The traditional abstraction barriers between compiler, build system and package manager are increasingly ill-suited for IDEs, parallel build systems, and modern source code organization. Recent compilers like go and rustc are equipped with a fully-fledged build systems; semantic build systems like Bazel and…