Philip Mocz

Computational Physics & AI | now at @twosigma. Previously @FlatironInst, @Livermore_Lab, @Princeton, @Harvard (PhD). Views are my own.

[Philip Mocz @PMocz]

Interested in scientific computing and astro/physics simulations? Follow me on Medium to explore college intro-level #Python tutorials https://t.co/eE1llD3G9U

[Philip Mocz @PMocz]

Orbitle #141
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https://t.co/eyWTQSA7iQ

[Philip Mocz @PMocz]

@yacineMTB Turbulence in 3D often cascades from large scales to small. Turbulence in 2D, it's the other way around

[Philip Mocz @PMocz]

@astro_magnetism This is amazing work, James! You may like Deitrich+Vautherin (1985) reformulation of compressible N.S. to nonlinear Schrodinger type eqn too! Rotational flow induces a guage field that resembles the MHD equations

[Philip Mocz @PMocz]

We live in an exciting new time where AI agents will be able to discover and optimize new engineering devices. I'm sharing a simple demo for tokamak design based on @karpathy 's autoresearch to illustrate the idea. Code here 👉 https://t.co/utSJpsASlv

[Philip Mocz @PMocz]

Try it in your browser: https://t.co/N8abn3T7Xg

[Philip Mocz @PMocz]

Try out the new Two-Button Calculator proposed in Odrzywołek (2026), interactive demo here: 👉🔴🟡https://t.co/eBCsrzOw4u

[Philip Mocz @PMocz]

@astro_magnetism @the_IAS Congrats, James! Excited to see what's next for you!

[Philip Mocz @PMocz]

Solving block tridiagonal matrices is a common bottleneck for physics solvers. Started prototyping a way to do this fast in #JAX w/ a parallel GPU/batched-LU algorithm: https://t.co/Z7pJclSp2A Already seeing huge gains over block Thomas (gpu) algo. @claudeai code is helping out

[Philip Mocz @PMocz]

LLMs can be an "Expert-In-The-Loop" for physics problems that require simulation. Here's a minimal example using #TextGrad (Automatic “Differentiation” via Text) solving a simple physics problem iteratively: https://t.co/6h4x9eUshz

@SimAI4Science #TesseractHackathon

[Philip Mocz @PMocz]

Here's a minimal example of how differentiable solvers can find blow-up solutions: https://t.co/iNePCDiome

#JAX #OptimizationOfDIscreteLoss

[Philip Mocz @PMocz]

Could AI solve a Millennium Prize Problem?
One of the outstanding math problems is Navier-Stokes: whether these fluid equations can have pathological blow-up solutions.
There are signs that...maybe they can. And AI might help find them. 🧵

[NeurIPS Europe Conference @EurIPSConf]

We are off to a great start with our first set of 9 #EurIPS workshops! the lecture rooms are buzzing and conversations are flowing at our three different workshop locations!

[Philip Mocz @PMocz]

Sharing a small codlet for how to create an end-to-end differentiable finite volume ALE fluid solver in #JAX : https://t.co/qYfyAd3mNE

[Philip Mocz @PMocz]

@cosmo_shirley @mikemccabe210 @PayelMukhopadh3 @__tm__157 @BrunoRegaldo @FrancoisRozet @PolymathicAI This looks incredible~!

[Philip Mocz @PMocz]

Having a lot of fun scaling up massive #Python / #JAX physics simulations on @ORNL's Frontier supercomputer with @AMD MI250X GPUs -- currently hitting 3 billion cell-updates/sec on a 2048³ run. 🚀 #HPC #Supercomputing #JAX

[Philip Mocz @PMocz]

I'm sharing a blog post going along with the code: https://t.co/jCCb59JwrQ

[Philip Mocz @PMocz]

I'm excited to share jaxion, a differentiable Python/JAX library for fuzzy dark matter (axions) + gas + stars, scalable on multiple GPUs

⭐️repo: https://t.co/zrNQGjFLxG
📚docs: https://t.co/6xOPonXzYe

Feedback + collaborations welcome!

[Philip Mocz @PMocz]

@AlbertEinstein Might have something to do with this ... (ref: https://t.co/zrNQGjFLxG)

[Philip Mocz @PMocz]

We're hiring Flatiron Research Fellows & Software Fellows at the @FlatironInst CCA. These independent postdoc positions offer outstanding opportunities for collaboration, computation, and scientific growth in NYC: https://t.co/YZJuQmC5N7 https://t.co/j2sqxxB25P

[Philip Mocz @PMocz]

I recently ran into errors where the @Google search bar gives me numerically incorrect answers for unit conversions or useless AI results. No idea what is causing the first issue. It used to be rock solid. With #vibecoding I could quickly create a new solution.

[Philip Mocz @PMocz]

I noticed Google search is no longer reliable for quick unit conversions & calculations.
So I built a simple online calculator
Give it a spin: https://t.co/Bvp6jiPEjN