Tony Van Eerd Anthony Williams JF Bastien Bryce Adelstein Lelbach I now (recently) believe the standard permits this overlap, but implementers should not do this. It's important to note that lock() isn't just an acquire load, it's an indeterminate number of acquire loads. Hanging in the balance are (practical) forward-progress guarantees.

Next stop launch

rr 5.9.0 released. The biggest improvement in this release is that users with kernel >= 6.10 mostly don't need to change the perf_event_paranoid setting anymore. github.com/rr-debugger/rr…

I actually have something to say about New Glenn now... youtu.be/Q4nSZNDRKW0

The `blake3` Rust crate just added a `hazmat` module: docs.rs/blake3/latest/…. The goal is to support advanced use cases like Iroh and Bao without requiring undocumented APIs or forking the crate. If you like library docs with scary warnings at the top, take a look.

There are two big rules for building secure tree hashes from an existing cryptographic hash. ("Domain separate your leaves and parents" and "domain separate your root".) I haven't seen these explained outside of academic papers, so here's a post: jacko.io/tree_hashing.h…

To support content-addressed data transfer in iroh, we have been relying on a BLAKE3-team fork for quite some time. Not anymore. Thanks to Jack O'Connor, there is now a nice new hazmat API that has exactly what we need, and more. For details: iroh.computer/blog/blake3-ha…

Blake3 is such a beautiful hash function. 80 gigabytes in ~3 seconds on M4 Max (unbinned). It's incredible, scales out near optimally. Outside of new cryptanalysis, I think it's the best hash function currently in production. thank you JP Aumasson.

What’s really interesting to me about AI: - Today’s capabilities, 10yrs ago, would have been declared AGI - BUT you also would have predicted they’d bring explosive GDP growth that could never be swamped by, like, some really bad tariffs

My latest talk: youtube.com/watch?v=LLAUzg…

Finally released Duct v1.0 in both Rust and Python: github.com/oconnor663/duc… github.com/oconnor663/duc…

Completely agree. LLMs being possible should feel like insane magic.

“This little girl is Achol Deng, 8, who likewise died when she lost access to antiretrovirals because of the U.S.A.I.D. freeze.”

I've been working on a new system called FOKS -- the federated open key service. There's a blog post that got picked up on hacker news discussing the launch: news.ycombinator.com/item?id=445000…