Kristofer Gaudel

cs+math+lit @UWaterloo

[Kristofer Gaudel @krisgaudel]

For the love of the game

[Yash Bhalgat @ysbhalgat]

FYI this is John Urschel

he's a former NFL player, and currently an assistant professor of Mathematics at @MIT

[Kristofer Gaudel @krisgaudel]

@damian_b Can't dm :( but would love to showcase my skills: https://t.co/R16MEndaUo

In short:
- Research on a (patented) Elastic Circuit Breaker for Shopify (Semian)
- Research on formal verification of Kubernetes controllers
- Contributions to numerous open-source PL/systems projects

[wafer @wafer_ai]

rounding up my height on hinge call that quantization

[Kristofer Gaudel @krisgaudel]

@tianyin_xu @xu_dong_sun @AishwaryaGanlat @RamAlagappn Congratulations! @xu_dong_sun

[SIAM Activity Group on Dynamical Systems @DynamicsSIAM]

"What math means to me" (by Larry Guth): https://t.co/MRWI4sai96

"This is a personal essay about how I see math, what I value about it, and what it means to me."

[Kristofer Gaudel @krisgaudel]

@ZenanLii Great work! Now that GPU kernels can be written in native Rust, have you experimented with Rust verification tool chains like Verus but on the GPU?

[Rose Yu @yuqirose]

When agents move from thinking to doing, everyone is excited about the future of #AI.

When I see students doing without thinking, I get concerned about the future of humanity.

With over 60,000 submissions to #ICLR2027, how many are the results of deep thinking from authors?

[Arnesh @arnesh_11]

They need to get on Splitwise atp

[Cloudflare @Cloudflare]

100 TB of RAM, saved by shrinking a consistent hash ring. The last 90,000 hashes per server were buying 0.7% load balance improvement. Math said stop. We stopped.

https://t.co/76XojaaDQG

[Parimal @Fintech03]

Most people treat a zero-failure record as a flex. In computer science, there is a sharper perspective famously known as "Umeshisms."

During his PhD at UC Berkeley under quantum computing pioneer Umesh Vazirani, computer scientist Scott Aaronson noted an aphorism his advisor loved to repeat:

"If you have never missed a flight, you are spending too much time in airports."

The math logic is simple: a 0% miss rate often means you are overpaying in friction, prep time, and missed opportunity. Occasional failure is often the price of a better expected-value tradeoff.

Aaronson named these "Umeshisms" in a 2005 blog post and penned a few sequels in the same spirit:

- "If you have never been rejected, you are not asking enough."

- "If you never cut yourself while shaving, you are not shaving close enough."

The lesson is recognizing when extreme risk aversion costs you more than the risk itself.

[Kristofer Gaudel @krisgaudel]

@NVIDIAHPCDev Will this mean verified Rust/GPU kernels will be inevitable?

[Kristofer Gaudel @krisgaudel]

Formal methods 🤝 Agents

[Chi Wang @Chi_Wang_]

NVIDIA's OpenShell uses the Z3 theorem prover to verify agent actions. When denying a path, it returns the exact constraint adjustment needed.

Binary guardrails just halt the loop. Returning structured counterexamples turns a block into a solvable recovery step.

https://t.co/gFSTeSW22j

[Kristofer Gaudel @krisgaudel]

@ch3mson 👋 (CS/BBA -> CS/CO/AMATH)

[Tianyin Xu @tianyin_xu]

I've written 70+ recommendation letters for students applying graduate programs in my career. This is the saddest one I have to redo.

// A former undergrad student got denial of entrance with a 5-year ban, when flying to the US for PhD study. As usual, no reason was given. I can't imagine what he have gone through.

[Kristofer Gaudel @krisgaudel]

@mijovic988 Are there any open source efforts I could help with? I have experience with Rocq and Verus, but have wanted to try formal methods applied to contracts!

[Megan Reynolds 👩‍💻 @meganreyno]

WAL Street

[Kristofer Gaudel @krisgaudel]

@PatrickToulme Fully (perhaps, formally) verifiable you say? 👀

[Kristofer Gaudel @krisgaudel]

@paper1837 Safe travels back to Ottawa man 🫡

[Kristofer Gaudel @krisgaudel]

@DominikTornow @resonatehqio Formal methods 🤝 Rust

[Drew Hahn @drewhahn]

“the agent is working in the sandbox”

meanwhile the agent: