The inner workings of a paper mill: deevybee.blogspot.com/2025/11/the-...

the best things are also thanks to fluid dynamics!

𝗖𝗼𝗺𝗲𝘁 𝗿𝘂𝗻𝘀 𝗰𝗶𝗿𝗰𝗹𝗲𝘀 𝗮𝗿𝗼𝘂𝗻𝗱 𝗝𝘂𝗽𝘆𝘁𝗲𝗿 Friends, I watched an AI agent complete my students' coding exercises in real-time, and I'm shook 🤯 I tested Perplexity's Comet browser on a Jupyter notebook with eigenvalue problems I assigned to my class… (video at the bottom of this thread)

Slides for the talk avaliable here! b-fg.github.io/EFDC2_2025/m... I'm loving this quarto + reveal.js for creating html presentations. Now that's portable!

Tomorrow at noon, I will be presenting at EFDC2 in Dublin! I will talk about our new mesh-free SINDy framework, collaboration with M. Gao and N. Kutz, for system dynamics identification on unstructured, scarce, and noisy data 🗓️ Session: tinyurl.com/c7up564z 🔗 Preprint: arxiv.org/abs/2505.16058

Just noticed my "Julia for Machine Learning" course got 2^8 stars on GitHub, yay! 🎉 github.com/adrhill/juli...

Exciting talks, brilliant minds, and a community that keeps pushing the boundaries of what’s possible with Julia.#JuliaCon2025 #JuliaLang #OpenSource #ScientificComputing #DayOne #CommunityVibes #TechConference #JuliaCommunity

The WaterLily.jl article is now available on Computer Physics Comms! @gabrielweymouth.bsky.social and I review our CFD solver's design, performance, accuracy, and also show some very cool examples (like the one below). Check it out! 🔗 doi.org/10.1016/j.cpc.2025.109748 #CFD #GPU #HPC #JuliaLang

Want to see what the flow past a semi-infinite array of randomly shifted and scaled circles looks like? I did too! Code is modified from the examples here: github.com/WaterLily-jl... #JuliaLang

I am happy to share that I have been awarded a Dutch Research Council (NWO) Veni personal grant! www.nwo.nl/en/news/200-...

Today’s vibecode achievement using @gabrielweymouth.bsky.social WaterLily. We went from 10 cylinders to 100 in no time at all; all on a standard laptop #vibecoding #julia #waterlily

Makie v0.24 is out! One of the biggest architectural updates yet—bringing better performance, cleaner internals, and new plotting capabilities. A big step toward Makie 1.0. makie.org/website/blog... #JuliaLang #OpenSource #Visualization #Plotting #HPC #MakiePlots #WGLMakie #Makie

Dear #mathsky, if you repost this, it will let people see the article for free. Thanks! www.nytimes.com/interactive/...

making #quarto slides can be a bit painful, but the end result is amazing. Feels like #Beamer, but it comes with the benefits of #markdown and #html

LLMs with uncertainty quantification output with be nice too

New WaterLily version is out 🌀! github.com/WaterLily-jl... #JuliaLang #CFD #GPU #LES 1/2

Our latest preprint on "Mesh-free sparse identification of nonlinear dynamics" is out! In collaboration with Mars Gao and Nathan Kutz, we explore a novel SINDy framework to uncover dynamical systems from scarce, noisy, and non-uniformly sampled data. 🔗 arxiv.org/abs/2505.16058 #SINDy #PDE #SciML #ML

#Overleaf is down and some are freaking out about a deadline coming right up... The standard work-local & push-to-remote approach is clearly not as widespread as I thought!

How to make #autodiff user-friendly? What lies beyond the safety of Python-world? Why does it matter for scientific machine learning? All this, and more, in our latest preprint with @adrhill.bsky.social! Spoiler alert: it describes the most useful software I ever wrote. arxiv.org/abs/2505.05542

WaterLily and @makie.org make a great team! #CFD #JuliaLang #GPU #DataViz

Say goodbye to vendor lock-in in GPU programming! Learn how Julia + KernelAbstractions.jl make writing fast, portable GPU code across architectures easier than ever. youtu.be/QvlBmh1t9I4 #JuliaLang #GPU #HPC #AI #ML #CUDA #OpenCL #DeepLearning #OpenSource

:)

This seminar is now available in our YouTube channel. Check it out! 🔗 youtu.be/ly7mBFf8esM

Fellow #JuliaLang enthusiasts, here's your chance to shine: the call for proposals of JuliaCon Local Paris 2025 is finally open. Send us your coolest, nerdiest contributions and we'll prepare a scientific program for the ages! pretalx.com/juliacon-loc...

Reminder for today's seminar at 5pm CET!

using an explicit LES model and a central difference scheme for the convective flux, we match nicely experimental results from the 70s! (doi.org/10.1017/S002...) Results with N=64^3 cells and Smagorinsky-Lilly turbulence model

We would like to invite you to join the next Large-scale CFD online seminar by Dr. Francesc Verdugo (UV Amsterdam) on "Large-scale sparse linear algebra with PartitionedArrays" github.com/PartitionedA... Date: 27/03/2025, 5pm CET Seminar link: tinyurl.com/4hy47ezv #HPC #MPI #JuliaLang

S'ha quedat un bon divendres www.youtube.com/watch?v=RVZV...

Fellow #JuliaLang enthusiasts in Europe, I've got 4 words for you. JuliaCon Local Paris 2025 Yes, it's happening. Like the global @juliacon.bsky.social event, but with more croissants. Stay tuned!

Playing a bit with our WaterLily.jl #CFD #JuliaLang solver and homogeneous isotropic decaying turbulence 🌀 128^3 grid running on my local #GPU ⚡ visualizing in real-time with @makie.org github.com/WaterLily-jl...

Another great output from our DRL for active flow control team! Lead by Pol Suarez, in this paper we show how DRL helps to achieve significant drag reduction for flow around a cylinder at Re=3900 with reduced mass cost efficiency! #CFD #RL #DRL #turbulence 📎 doi.org/10.1007/s10494-025-00642-x

Part 2 of the collaboration with Terence Tao on the cosmic distance ladder is now out. It covers how we first learned the distances to planets, stars, and galaxies far, far away. youtu.be/hFMaT9oRbs4

#JuliaLang Pkg and #ArchLinux pacman are such great tools. The best package managers I have ever used.

I've often struggled to explain _why_, even as a novice, I enjoy #julialang so much, often falling back to "It just feels nice." Apparently, I should have just let the Julia developers explain it. Came across the following from "Why We Created Julia" from 2012-02 and it all makes more sense now.

One of my favorite tunes lately, by Tower of Power www.youtube.com/watch?v=QBMX...

I only realised during the second season of #Severance !

Tuesday next week (18th February, 5pm CET), Dr. Soledad Le Clainche from Universidad Politécnica de Madrid will present at the Large-scale CFD online seminar series: "From modal decompositions to machine learning: new tools and applications in fluid dynamics".

🆕 New paper by BSC researchers published in Nature Communications on a critical challenge in fluid dynamics: turbulence 💻The researchers investigated how #AI can improve active flow control to reduce turbulence. 🔗 www.nature.com/articles/s41...

Font et al. show a deep reinforcement learning-driven controller that cuts turbulent separation bubbles more effectively than periodic forcing. Trained on a coarser grid, it transfers smoothly to fine-grid simulations. www.nature.com/articles/s41...

We have succeeded in controlling a turbulent separation bubble at a high Reynolds number using deep reinforcement learning! The paper, published in @naturecomms.bsky.social (@natureportfolio.nature.com), can be accessed here: www.nature.com/articles/s41... #ML #DRL #CFD #LES

New video! Terence Tao on how we measure the cosmos: youtu.be/YdOXS_9_P4U

Getting excited about an upcoming numerical method paper... Here's a hint: This is the 𝐞𝐧𝐭𝐢𝐫𝐞 numerical domain!

You think Jacobian and Hessian matrices are prohibitively expensive to compute on your problem? Our latest preprint with @gdalle.bsky.social might change your mind! arxiv.org/abs/2501.17737 🧵1/8

Using higher order automatic differentiation to improve stiff ODE solvers? Using a third order Newton-like method (Halley's) inside the #sciml #julialang ODE solvers with Taylor-mode AD, ~25% faster. arxiv.org/abs/2501.16895

After 1-2 months of grant writing, I am happy to be coding again...

Ok, so can we get some cheap GPUs now - to, you know, play video games and all that?

changing the default downloads directory from ~/Downloads/ to /tmp/ is self-care

I compiled some of the learning resources I point out to students in this repo github.com/b-fg/learnin... These are free online books/articles/posts/webs/repos on #CFD, #ML, #HPC, and #academic writing. Very preliminary, but I will be adding some more as they come up. Please feel free to contribute!

There is only one week left to apply for this PhD position!

Merry Christmas 🎄