Seth Stadick

github.comGitHub - aardappel/goose: The Goose Programming LanguageThe Goose Programming Language. Contribute to aardappel/goose development by creating an account on GitHub.

github.com/aardappel/go... It’s like they took every pattern you try to stick to for performant code and just made it a first class language feature. Very cool language and idea.

We have done it. We've hit the high point of civilization. You can export as markdown from Word.

dev-null.sh/dev/null: a social network for developersA social network for developers. Sign in with GitHub, follow people who write code, and commit plain text to a shared log.

dev-null let's you create posts via your ssh keys: dev-null.sh/settings/ter... Behold, an automated posting of the nightly diff for Mojo! dev-null.sh/@sstadick/co...

matklad.github.io/2026/10/05/b...

matklad.github.ioBenchmark In MillisecondsHow long should a micro benchmark run? My rule of thumb is to tweak the input size until the benchmark takes about 300ms, for the following reasons:

dev-null.shSeth (@sstadick) on /dev/nullRust, Mojo, Bioinformatics.

Anyone else on /dev/null yet? It seems promising, but I don't know anyone there yet: dev-null.sh/@sstadick

github.com[mojo-lang] Add support for `while case`. · modular/modular@8f0c263This adds support for `while case` for completeness. A `while case` loop iteratively evaluates its condition until the match fails. Ref PRDT-304 MODULAR_ORIG_COMMIT_REV_ID: a7954a7f9581bcf4dfd680...

Mojo gets support for its equivalent of ‘if let’ and ‘while let’: github.com/modular/modu...

mojolang.orgMojo nightly | MojoThis version is still a work in progress.

Full nightly changlog, there’s cool stuff in progress: mojolang.org/releases/nig...

developer.nvidia.comIntroducing CUDA Rust: Two Tracks for Writing GPU Kernels | NVIDIA Technical BlogIn September 2026, NVIDIA announced it is leaning into native GPU programming in Rust. CUDA C++ and CUDA Python are mature, enterprise-grade toolchains, and NVIDIA will be growing and maturing CUDA…

9 Sept

GPU kernels in Rust! developer.nvidia.com/blog/introdu...

github.com[mojo-lang] Add the pattern matching + enum proposals, NFC · modular/modular@0bcbbfeThis checks in the proposals for pattern matching and enums, for community discussion on the forums. PRDT-304 MODULAR_ORIG_COMMIT_REV_ID: f55f28046b394f62f40eb122241df148b4dee88f

9 Sept

enums and match proposals for Mojo: github.com/modular/modu...

tmpout.shInterview: Doug McIlroy ~ tmp.0ut Staff

28 Aug

ls -transubstantiationalist That works. tmpout.sh/5/2.html

28 Aug

> I remember the director of that division once telling me, "we are the greatest users of computing at Bell Labs. We use more time than anybody else. We depend on it much more." And that was because they're using a macro-processor, which runs slow by about a factor of a hundred,

28 Aug

> rather than a regular compiler. He was just blissfully unaware that macros were great for defining a language, but once they had it, they should have built a compiler. ... sounds familiar

27 Aug

🔥🔥🔥

Matt Holt@holtjma.bsky.social

Our article introducing Aardvark for variant benchmarking is now published in Genome Biology! “Aardvark: sifting through differences in a mound of variants” DOI: doi.org/10.1186/s130... GitHub: github.com/PacificBiosc... Follow along for some highlights… 1/N

doi.orgClient Challenge

larsfaye.comAI Coding will Prevent Expertise | Lars FayeThe need for ongoing friction in long-term skill formation.

25 Aug

One of the most balanced articles I've read on how LLM usage and learning interact: larsfaye.com/articles/ai-... Well worth the 10 minutes to read it.

github.comGitHub - AnswerDotAI/xmojo: Experimental interactive Mojo environment built on Modular's ORC compiler stackExperimental interactive Mojo environment built on Modular's ORC compiler stack - AnswerDotAI/xmojo

24 Aug

Jupyter and REPL support for mojo via Jeremy Howard: github.com/AnswerDotAI/...

pythonspeed.comFaster floating point math with Rust’s new APICompilers have a hard time optimizing floating point math. Rust has a new API to fix this.

21 Aug

A good write up on how the new fast floating point arithmetic in rust v1.98.0 can be used pythonspeed.com/articles/fas... releases.rs/docs/1.98.0/ (the `algebraic_*` methods)

crates.iocrates.io: Rust Package Registrycrates.io serves as a central registry for sharing crates, which are packages or libraries written in Rust that you can use to enhance your projects

rust-lapper v2.0.0-beta.1 is published! This is a large update to mitigate the worst case scenario where there are large intervals that envelope many smaller intervals. It's a lot faster (more details below), and keeps the same api, as well as the BITS implementation. crates.io/crates/rust-...

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While the ideas were mine (and lean heavily on ideas from super-intervals), the implementation in this case was nearly 100% AI written. While I've reviewed it all, tested it all, etc, I still have mixed feelings about shipping AI generated code in a repo that was previously human-only.

biodatageeks.orgInterval operations benchmark — update September 2025 - polars-bio

Perf: This should generally be 1.5x faster than the original rust-lapper, and 76-90x faster on the worst case scenarios. Huge thank you to the bio-polars team that put out this blog post which inspired the second look at rust-lapper biodatageeks.org/polars-bio/b...

crates.iocrates.io: Rust Package Registrycrates.io serves as a central registry for sharing crates, which are packages or libraries written in Rust that you can use to enhance your projects

github.comAdd a portable SIMD block index for forward overlap queries by sstadick · Pull Request #27 · sstadick/rust-lapperA note on AI 🤖 I used agents extensively to benchmark possible implementations and explore different indexing methods. The two key ideas, the block-based index and the SIMD overlap masks, were, sur...

The main change is adding 32-interval block index that allows for skipping, as well as doing simd comparisons when there are some matches present, while maintaining forward ordered iteration on query. See the PR for details: github.com/sstadick/rus...

Why beta? This is a drastic change from the original rust-lapper, and while I've tested it every way I can think of, I'd still rather not pull the rug out on people who use this and don't have appropriate version guards set up.

github.comGitHub - microsoft/snmalloc: Message passing based allocatorMessage passing based allocator. Contribute to microsoft/snmalloc development by creating an account on GitHub.

19 Aug

github.com/microsoft/sn... There is a rust crate as well. tl;dr; Allocator that is great when allocations on one thread are freed by a different thread

cerebras.aiProduct - System - CerebrasThe Cerebras CS-3 delivers revolutionary AI performance, replacing hundreds of GPUs with a single wafer-scale chip. Accelerate AI workloads like never before.

19 Aug

These new chips (meaning all the Cerebras chips, not just this one) are so cool. I can’t wait till the older generation falls out of inference service so we can use it for other stuff

mr. TIM@timkellogg.me

Cerebras CS4 dropped and they’re talking about 1000 tok/s for 3T and even 10T models www.cerebras.ai/cs4

mojolang.orgMojoThe Mojo programming language

Now that it's open source, I can plug a few helper libraries I've been pulling along to 1.0! But first, the best spot to start is mojolang.org For looking for libraries: github.com/modular/modu...

Seth Stadick@ducktapeprogrammer.bsky.social

Mojo is now fully open source! www.modular.com/blog/mojo-op...

modular.comModular: Mojo🔥 is now open source!The Apache 2.0 license is the gold standard for programming languages and compilers, because it provides great flexibility to be used in all sorts of applications. The LLVM extensions to the license f...

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github.comGitHub - sstadick/mojopt: Structopt inspired command line arg parser in MojoStructopt inspired command line arg parser in Mojo - sstadick/mojopt

mojopt - A Mojo library for parsing CLI args based on the Rust Structopt crate. github.com/sstadick/moj...

pixi.prefix.devpixi-build-mojo - PixiPixi Documentation — Next-gen package manager for reproducible development setups

Lastly, I'm a contributor to the `pixi-build-mojo` backend, which is what @prefix.dev can use to build Mojo projects: pixi.prefix.dev/latest/build... And allows you to install dependencies directly from GitHub, which is really cool!

mojolang.orgMojoThe Mojo programming language

Now that it's open source, I can plug a few helper libraries I've been pulling along to 1.0! But first, the best spot to start is mojolang.org For looking for libraries: github.com/modular/modu...

Seth Stadick@ducktapeprogrammer.bsky.social

Mojo is now fully open source! www.modular.com/blog/mojo-op...

github.comGitHub - sstadick/hat: Thin wrapper over pixi to be used as a mojo build tool.Thin wrapper over pixi to be used as a mojo build tool. - sstadick/hat

hat - a thin wrapper for pixi for a more cargo like interface to working with mojo projects github.com/sstadick/hat

github.comGitHub - ExtraMojo/ExtraMojo: A library of nice to have things not found in the current mojo stdlibA library of nice to have things not found in the current mojo stdlib - ExtraMojo/ExtraMojo

extramojo - Things I missed in the Mojo stdlib, such as Rust-like Reader/Writer, BitVec, bstr, etc github.com/ExtraMojo/Ex... Docs site here: extramojo.github.io/ExtraMojo/ex...

Mojo is now fully open source! www.modular.com/blog/mojo-op...

github.commodular/KGEN at main · modular/modularThe Modular Platform (includes MAX & Mojo). Contribute to modular/modular development by creating an account on GitHub.

github.com/modular/modu... It really is there! 🔥

14 Aug

This is awesome

mr. TIM@timkellogg.me

Cerebras is kind of a strange programming model simple? foreign? dataflow? ya idk, would be fun to see how well i could do

13 Aug

"<new format> is easily readable in any spreadsheet software or text file editor" Why do we keep doing this to ourselves.

modular.comModular: Modular 26.5: Mojo 1.0 is here!Today, the Mojo language officially reaches 1.0: a milestone the language has been building toward since its first release in 2023. Mojo has grown into a general-purpose language with a vibrant develo...

11 Aug

Mojo 1.0 is out! www.modular.com/blog/modular... Compiler open sourcing still looks on track for sometime in the next few months.

mojolang.orgMojo roadmap | MojoA summary of our plans and priorities to improve the Mojo language.

11 Aug

Notably, phase 2 should start soon, which has the two things I'm most excited for: concurrency and pattern matching. mojolang.org/docs/roadmap...

Seth Stadick reposted

Rob Patro

@robp.bsky.social

29 July

New preprint🚨(*long* time coming)! We introduce seqproc: an efficient, flexible, and concise tool for describing and transforming sequencing-read geometry. The aim: make complex protocols easy to specify & transform without giving up speed or accuracy. www.biorxiv.org/content/10.6... 🧵

biodatageeks.orgInterval operations benchmark — update September 2025 - polars-bio

28 July

I have some large changes queued up for rust-lapper to address the worst-case in these benchmarks: biodatageeks.org/polars-bio/b... BUT, it's now a fundamentally different data structure. The API is the same for using it. Do I release as a v2 of rust-lapper, or release as a brand new crate?

28 July

The speedups roughly 1.5x faster on the general cases and ~76x faster on the worst case in that benchmark post. Lapper as an idea originates from @brent-p.bsky.social, and a large part of its uniqueness is how simple it is.

28 July

What I'm adding essentially a forward iterating version of super-intervals, where I have 32-interval blocks with forward skipping links, along with simd checks for all intervals in each block of 32. Substantially more complex than the original lapper sorted list+binary search.

scientificcomputing.rsScientific Computing in Rustthe Scientific Computing in Rust annual workshop and monthly newsletter.

27 July

July Scientific Computing in Rust scientificcomputing.rs/monthly/2026...

22 July

TIL `find` has an query opt level: -Olevel Enables query optimisation. The find program reorders tests to speed up execution while preserving the overall effect; that is, predicates with side effects are not reordered relative to each other. ...

codeberg.orgintroduce an actually memory safe (unlike Rust) compilation mode inspired by Fil-CBased on prior art: [Fil-C](https://fil-c.org/) Currently Zig has: ```zig pub const Optimize = enum { /// Safety checks enabled. Optimize for bug detection, accurate debug info, /// and compilation speed (in that order). debug, /// Safety checks enabled. Optimize for runtime per...

20 July

"Once this is implemented then, in a twist of fate, Zig will become one of the only toolchains capable of producing actually memory safe executables" At 1-6x performance penalty. BUT, still very cool and interesting way to do this. codeberg.org/ziglang/zig/...

15 July

... I think I actually liked writing all the stupid little glue scripts.

mattshlosberg.substack.comBiotech Is Entering Its Netflix EraAI Just Created a Bigger Problem Than Cancer

To be clear: I think this is cool because it means more money going into biotech related software. The same way companies are suddenly ready to pay to have good data storage practices and slap APIs on everything, they may now pay attention to their lab infrastructure.

Seth Stadick@ducktapeprogrammer.bsky.social

> AI changes this equation in the same way machine tools changed manufacturing or cloud computing changed software deployment: by collapsing the marginal cost of experimentation. mattshlosberg.substack.com/p/biotech-is...

purplesyringa.moeQuadrupling code performance with a "useless" ifSo I was optimizing a domain-specific compressor the other day, as one does. One important problem was chunking the input string and optimally choosing the most compact encoding for each chunk (differ...

purplesyringa.moe/blog/quadrup... I have not seen likely/unlikely used in order to allow the cpu to parallelize loop instructions before. Very cool.

mattshlosberg.substack.comBiotech Is Entering Its Netflix EraAI Just Created a Bigger Problem Than Cancer

Jess Smith@nanojess.io

This is pretty much spot-on and it make all these lab-in-the-loop companies look prescient. My experience from doing this sort of work is that it's the boring sample chain-of-custody and metadata tracking stuff that will widen/narrow the bottleneck

mattshlosberg.substack.comBiotech Is Entering Its Netflix EraAI Just Created a Bigger Problem Than Cancer

The article is about pharma, but I feel like it’s generally applicable to ideation in the bio space right now. Companies with the best infra will scale better.

Seth Stadick reposted

Ragnar {Groot Koerkamp}

@curiouscoding.nl

9 July

My secret 4th ALGO paper is out! We show a tight space lower on non-minimal k-perfect hash functions, generalize PtrHash into a non-minimal k-PHF, and then use it to develop a hash set implementation that is up to 1.6x faster than other hash sets! With Stefan {Hermann, Walzer} and Peter Sanders

arXiv cs.DS Data Structures and Algorithms@csds-bot.bsky.social

Ragnar Groot Koerkamp, Stefan Hermann, Peter Sanders, Stefan Walzer: Non-minimal k-perfect hashing: Tight lower bounds and an application to fast static hash tables https://arxiv.org/abs/2607.07257 https://arxiv.org/pdf/2607.07257 https://arxiv.org/html/2607.07257