Viewing profile — maxime_cb

Thanks :) I've made a couple of music apps over the years, including one of the oldest JS music apps on the web, that also does URL encoding: https://pointersgonewild.com/2012/04/2…

Hi there! Just wanted to share an open source music project I've been working on. There are already a number of web-based drum machines, but I think most of them are pretty basic (…

I gave a talk about ZJIT and the motivation for the change at RubyKaigi 2025 if people are curious. It's on YouTube.

Max Bernstein is now leading the team. He's also an excellent compiler engineer.

Thanks Ken. Apologies if I misunderstood the situation. I wish you all the best.

Ruby has the same unfortunate problem.

Instigator of YJIT, the CRuby JIT here. It's easy to dismiss our efforts, but Ruby is just as dynamic if not more than Python. It's also a very difficult language to optimize. I th…

YJIT is optimized primarily for web workloads. We look at rails performance a lot, but also at various other libraries that are used in that context. If you look at the headline be…

Yes, Marc Feeley was my PhD advisor. We came up with the original idea together. I also see it as a development of the work I did in my M.Sc. thesis on type-driven versioning of fu…

Hope you try again with 3.3. The improvements we've made to YJIT since Ruby 3.1 are massive.

It is enough iterations for these VMs to warm up on the benchmarks we've looked at, but the warm-up time is still on the order of minutes on some benchmarks, which is impractical f…

The article doesn't go into super deep details but we do touch on it in the paper we've recently published: https://dl.acm.org/doi/10.1145/3617651.3622982 And I went into some more…

Ruby 3.3 (coming this Christmas) will have a much faster and more memory efficient YJIT than 3.2. We've made major improvements this year.

YJIT tech lead here. On the flip side, YJIT is probably one of the most memory-efficient JIT compilers out there (for any language). I say this having spoken to other JIT implement…

And very crispy.

Looks pretty cool :)

Author here. If you've grown up in a "normal", functional family, with two loving parents, and you enjoy talking to them on the phone, you should consider yourself very lucky. I on…

> I was wondering what the author was smoking with the "ringtone & notifications" complaint. I don't remember seeing an Android phone that did not have separate volume slider for e…

Author here. The reason I tend to think it's a software bug is that it seems that the system to dispatch deliveries is automated. The subcontractors get their orders from some kind…

> However the Ruby community seem to want having their own JIT written in C more than they want performance. YJIT is written in Rust, not C, but it's also not just a matter of want…

Yes. Prior to that point we used to allocate a large chunk of executable memory upfront. We switched to mapping that memory on demand, and that alone was a huge improvement.

For anyone curious, we've been working to reduce the memory overhead and have added some stats to keep track of memory usage over time. On this graph, you can see a comparison with…

You're right that the peak performance could be on par (or even better), but, and I acknowledge that I'm biased since I'm tech lead of the YJIT team, my takeaway is: 1. Kokubun, wh…

Shameless plug: for something more approachable, I've created NoiseCraft, which runs in a web browser, has fewer primitives, and is designed to be easier for beginners to grasp: ht…