Melih Elibol

Sr. Research Scientist @NVIDIA. Building cuTile Rust: safe, data-race-free GPU kernels in Rust 🦀 Prev: Ray, NumS. Speaking @ RustConf 2026.

[Greg Brockman @gdb]

Rust is great.

We’re making a $600,000 commitment to the Rust Foundation:

[Charlie Marsh @charliermarsh]

At OpenAI, we're continuing to bet on Rust as the future of systems programming.

I'm proud to announce that we're making a $600,000 commitment to the Rust Foundation, which combines our Platinum membership with additional support for maintainer efforts across the Rust ecosystem.

[Charlie Marsh @charliermarsh]

I love Rust

[ayush🔮👨‍💻🔮 @ayushagarwal027]

NVIDIA researchers just brought Rust's ownership model to GPU kernels. 🦀

The paper: "Fearless Concurrency on the GPU" introduces cuTile Rust.

The problem: writing custom GPU kernels in Rust meant stepping outside Rust's safety guarantees entirely.

cuTile Rust fixes that : mutable outputs get split into disjoint pieces, kernel launches preserve ownership rules from host to device, with local opt-outs when you need raw control.

The performance holds up:
→ 7 TB/s for element-wise ops on NVIDIA B200
→ 2 PFlop/s for GEMM : 96% of cuBLAS
→ Matches cuTile Python within measurement noise

They also built Grout, an inference engine on top, running real models:
→ 171 tokens/s for Qwen3-4B on RTX 5090
→ 82 tokens/s for Qwen3-32B on B200
→ Competitive with vLLM and SGLang

Safe, idiomatic Rust at full CUDA performance. This is a big step for Rust in ML infra.

🔗 https://t.co/A5rN8ULiLl

#Rust #RustLang #GPU #CUDA #MachineLearning #SystemsProgramming #NVIDIA

[Charles 🎉 Frye @charles_irl]

CuTile-rs paper!

https://t.co/5zOOYfS8Pz

[Eric Buehler @ericlbuehler]

Excited to share cuTile Rust: bringing Rust's fearless concurrency to GPU kernel programming. Our paper "Fearless Concurrency on the GPU" is now on arXiv.

For me the best part is how fast you can iterate: high-performance CUDA kernels developed directly in Rust.

Huge thanks to my co-authors Melih Elibol, Jared Roesch, Isaac Gelado, and Michael Garland on this project.

[Nihal Pasham @npashi]

Finally able to talk about what I've been heads-down on for 6 months at @nvidia 🦀⚡

We just open-sourced cuda-oxide — an experimental rustc backend that lets you write CUDA kernels in pure Rust.

No DSLs. No FFI. No source-to-source step. Single source.

Short🧵👇

[Jared Roesch @roeschinc]

Fearless Concurrency on the GPU

For those interested @melibol just posted a paper on building a safe Rust kernel programming abstraction on top of Tile IR.

https://t.co/MMPxi4oOEg

A short teaser: but the safety is effectively free. On a B200, the safe GEMM is competitive with cuBLAS: about 2 PFlop/s 92% of the GPU's dense f16 roofline.

Read more in the paper or Melih's LinkedIn post (https://t.co/jyyfdC2Vc8)

He will also be giving a talk at RustConf in September, hopefully he will see you there!

[Jared Roesch @roeschinc]

I am giving a talk at ARRAY @ PLDI this week. If anyone is around Boulder for PLDI would love to catch up! see you all there!

[Matt @matt_dz]

cuTile Rust: a safe, tile-based kernel programming DSL for the Rust programming language
https://t.co/BfdGEJ969w
features a safe host-side API for passing tensors to asynchronously executed kernel functions

[Wanderu @GoWanderu]

Presenting Polina Raygorodskaya, Doctor of Laws 👏🎓 @polinatravels @babson

📸: Michael Chmura

[Eddy Wong @eddywongch]

A Wanderu Jedi heads West. Glen ... use the Force! @GoWanderu

[Wanderu @GoWanderu]

Team outing with the Wanderus!

[Eddy Wong @eddywongch]

@GoWanderu hosting the #graphdb BOS: whats new in #Neo4j? @melibol @0ffero @strataconf #cypher #graphtraversal

[Melih Elibol @melibol]

@NoelleFogg Tell me about it! I was melting at lunch time...

[Melih Elibol @melibol]

Curious about that one... Must be broke >.< #tweetcoding

[Melih Elibol @melibol]

Like this #tweetcoding http://twitter.com/milkisevil/status/1284627293

[Melih Elibol @melibol]

What else is there to do on twitter besides #tweetcoding? ^_^

[Melih Elibol @melibol]

One more with this gimme code - not sure if I will get another chance! "lost fish" #tweetcoding http://twitter.com/melibol/status/1276703078

[Melih Elibol @melibol]

for(g.clear();j=i++%300;ls(0))with(o[j]=o[j]?o[j]:new Matrix)mt(b,c),u=b-mouseX,v=c-mouseY,t=-m.pow(u*u+v*v,-.7)*r(),lt(b+=a+=u*t,c+=d+=v*t)