Max Slater
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thenumb.at
Max Slater
@thenumb.at
https://thenumb.at
Computer Graphics, Programming, Math, OxCaml, C++
Reposted by Max Slater
Then I dive into the tutorial we held about Oxidised OCaml, the performance-oriented fork at oxcaml.org that @yminsky.bsky.social announced earlier this summer. Try the tutorial in a convenient devcontainer, and take our quiz to help develop the language! @thenumb.at anil.recoil.org/notes/icfp25...
Holding an OxCaml tutorial at ICFP/SPLASH 2025
anil.recoil.org
October 23, 2025 at 1:12 PM
I'll be at ICFP/SPLASH if anyone wants to chat about OxCaml!
October 10, 2025 at 4:30 AM
Reposted by Max Slater
And if you’re interested in OxCaml, we have a tutorial on Sunday at ICFP walking through it conf.researchr.org/track/icfp-s... (materials will be online for anyone afterwards. Just the minor detail of finishing writing them first)
October 3, 2025 at 2:32 PM
Reposted by Max Slater
wave_tracer 0.1 released
wavetracer.dev

wave_tracer combines path tracing and wave optics in a novel way, for practical general-purpose wave simulations across a variety of EM modalities and applications.
August 30, 2025 at 3:23 PM
We've seen how to define and apply Monte Carlo integration, but there's a whole world of techniques for reducing variance.
Part five (thenumb.at/QMC) covers Quasi-Monte Carlo: negative correlation, stratified and adaptive sampling, and low-discrepancy sequences.
August 2, 2025 at 7:57 PM
Reposted by Max Slater
I had a lot of fun giving this talk in Singapore about the many-years-long saga of multicore OCaml, and in particular, the work over the least 2.5 years of getting it ready for production work within Jane Street's walls.

www.youtube.com/watch?v=XGGS...
The Saga of Multicore OCaml
YouTube video by Jane Street
www.youtube.com
July 24, 2025 at 9:29 PM
Reposted by Max Slater
I am getting increasingly excited by the runtime metaprogramming extensions coming into OxCaml. They deal with the fundamental non-portability of most of the modern vector extensions in CPUs (across all architectures), but don't expose any of their decision trees in the interface of the OCaml lib
July 21, 2025 at 4:18 PM
Reposted by Max Slater
Our #SIGGRAPH2025 paper "Augmented Vertex Block Descent" presents an extremely fast and stable physics solver with hard constraints for handling joints and collisions.

The project page has a 2D demo with source code and more details:
graphics.cs.utah.edu/research/pro...
June 23, 2025 at 3:43 AM
Reposted by Max Slater
Rendering nerds! Check out our latest work "Vector-Valued Monte Carlo Integration Using Ratio Control Variates" that has just gotten the best paper award at SIGGRAPH 2025. This paper presents a method that reduces variance of a wide range of rendering and diff. rendering tasks with negligible cost.
June 14, 2025 at 5:26 PM
We've been working on this for years 📈
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.
June 13, 2025 at 2:15 PM
Reposted by Max Slater
I have published my first new blog post in four years lexi-lambda.github.io/blog/2025/05...
A break from programming languages
lexi-lambda.github.io
May 29, 2025 at 4:25 PM
Reposted by Max Slater
Here is a new blog post of mine, where I dive deep into the theory and math behind ReSTIR GI.

Big thanks to Markus Kettunen for verifying the theory, reviewing the article, and catching a key detail I had missed.

agraphicsguynotes.com/posts/unders...
Understanding The Math Behind ReSTIR GI
Recently, I had the pleasure of contributing to Nvidia’s Zorah project, the flagship demo for the RTX 50 Series GPUs. My primary role was to provide technical support for light transport in Zorah, whi...
agraphicsguynotes.com
May 10, 2025 at 12:11 AM
Reposted by Max Slater
A thread on Monte Carlo integration, Sobol' sequences and our new awesome Siggraph paper "Sobol' Sequences with Guaranteed-Quality 2D Projections". by @dcoeurjo.bsky.social , J-C Iehl, V. Ostromoukhov and me. The tl;dr is our video: www.youtube.com/watch?v=8A4Z...
[1/16]
Sobol' Sequences with Guaranteed-Quality 2D Projections, supplementary video
YouTube video by Nicolas Bonneel
www.youtube.com
May 4, 2025 at 7:38 PM
Apologies for the delay of part 5...
May 4, 2025 at 3:52 PM
Monte Carlo has many uses, but path tracing is one of my favorites. Part four (thenumb.at/Rendering/) explores how Monte Carlo integration is used to simulate light transport.
April 19, 2025 at 7:39 PM
Monte Carlo methods require randomly sampling complicated domains, which can be difficult in of itself.
Part three (thenumb.at/Sampling/) discusses how to create samplers using rejection, inversion, and changes of coordinates.
April 12, 2025 at 7:36 PM
Reposted by Max Slater
Graphics Programming weekly - Issue 386 - April 6th, 2025 www.jendrikillner.com/post/graphic...
April 7, 2025 at 2:03 PM
Monte Carlo integration lets us integrate high-dimensional functions exponentially faster than traditional methods!
Part two (thenumb.at/Monte-Carlo/) explores how and why it works.
April 5, 2025 at 4:41 PM
Reposted by Max Slater
One thing I really like about this talk is that it talks both about what kind of language OCaml is now, and also what are the design goals for the kind of language we want to turn it into.

youtu.be/g3qd4zpm1LA?...
Making OCaml Safe for Performance Engineering
YouTube video by Jane Street
youtu.be
April 4, 2025 at 1:08 PM
I'm working on a series of posts about Monte Carlo methods!
The first (thenumb.at/Probability) is a review/overview of continuous probability, including random variables, distributions, expectation, variance, probability bounds, and the Dirac delta.
March 29, 2025 at 7:15 PM
Reposted by Max Slater
After many years of giving talks, I no longer get nervous.

Instead, I'm now nervous when my students give talks!

Fortunately, they do an amazing job.

Here's Mark Gillespie giving an extended talk on a new *harmonic* surface representation:

www.youtube.com/watch?v=9h13...
Ray Tracing Harmonic Functions (Extended Talk)
YouTube video by Mark Gillespie
www.youtube.com
February 11, 2025 at 3:36 PM
Reposted by Max Slater
This talk by Stephen Dolan has totally reshaped the way I think about the pareto frontier that Hindley-Milner sits on. Seriously worth watching.

www.youtube.com/watch?v=C1g_...
www.youtube.com
February 5, 2025 at 2:26 AM
Reposted by Max Slater
You cannot get physically-based rendering right without understanding radiometry. My new blog post explains it all, relying on familiar concepts from rendering algorithms as much as possible.
Part 2 will come next week.
momentsingraphics.de/Radiometry1B...
January 12, 2025 at 7:44 PM
Reposted by Max Slater
For those of you attending POPL'25: I will be giving a tutorial! Come join me on **Sunday, January 19** for a hands-on crash course:

MPL: Provably Efficient Parallel Programming

Two sessions; three hours total. A short description of the tutorial is available here: cs.nyu.edu/~shw8119/25/...
cs.nyu.edu
December 12, 2024 at 5:04 PM
Reposted by Max Slater
Here's a recording of my Tiny Glade presentation from the Graphics Programming Conference 2024:

www.youtube.com/watch?v=jusW...

It's an any% speedrun of our GPU-driven rendering, shadows, global illumination, water, and DoF, involving a few weird tricks.
Rendering Tiny Glades With Entirely Too Much Ray Marching
YouTube video by Graphics Programming Conference
www.youtube.com
December 5, 2024 at 2:19 AM