RT @ezyang: LLM game changer for fixing build errors in OSS PRs on our internal build system.

A gem from Stephen Dolan, which proposes replacing the "generational hypothesis" that drives the design of generational GCs with a notion of lifetime dispersion as measured by the gini coefficient. Nice to see economics playing a role here! .

RT @davidbalbert: Today I asked o3-mini (Copilot Chat) to port a 100 line shell script to Python. Its first attempt was terrible. No amou….

RT @samth: Over the 10 days, I wrote a new Racket library for "expect testing", a style that @yminsky has advocated for in OCaml. https://t….

Which is fun, I think! You can follow along with the developments here in real time along with us. But also, it suggests you should expect a bit of a bumpy ride. .

A thing that people may not realize is how new some of the OxCaml extensions are. We are on the verge of rolling our very first data race free parallel program into production. Almost no one at Jane Street knows how to use this stuff yet!.

RT @shwestrick: OxCaml SIMD primitives are looking really nice 👀 . > [unboxed vector values] are passed between funcs in XMM registers, sto….

Now this is a good question!.

Indeed! OxCaml does have early versions of all of these ideas, though it's far from complete. But the talk gives you a good sense of where we're going.

RT @DazzlingHazlitt: @yminsky First the language committee, now this. Really exciting to see where JS takes the language. Graydon finally g….

And if you want to know a bit more, here's a blog post, announcing the release of OxCaml!.

RT @The_Numbat: We've been working on this for years📈.

But we're also interested in building adoption among enthusiasts and researchers who don't mind working with a language that is changing quickly under their feet. We think there's a ton to learn from the collaboration.

So why are we doing this? Our primary hope is to use this to build awareness about our work, and to help pave the way for getting these extensions upstreamed to mainline OCaml.

OxCaml is in an interesting spot. It's an experimental language, whose extensions will change quickly and mercilessly. But it's also a production quality compiler. Indeed it's the compiler we use in production everyday.

OxCaml's extensions make OCaml a better language for performance engineering. It also supports data race free parallel programming, and a bunch of other goodies. You can read more here:.

I'm pleased to announce OxCaml!. OxCaml is Jane Street's branch of OCaml. We've given it a new name and a snazzy logo, and done a bunch of work to make it easy for people to try.

I use no tools for the python at all Claude just wrote it. And then I asked Claude to convert it to OCaml, and it did. On the ocaml side I had to use Dune and the regular set of tools there.

RT @chiayong_: Learnt that Jane street has a awesome tool for perf monitoring. Tool that janestreet uses for at 10….

RT @chiayong_: @yminsky great talk btw! simple, entertaining and lots of learning lesson