[celrod]

I was once a bit of a Julia performance expert, but moved toward c++ for hobby projects even while still using Julia professionally.

I wrote a blog post at the time with exactly that punchline (not explicitly stated, but just look at the code!): https://spmd.org/posts/multithreadedallocations/ The example was similar to a real production-critical hot path from work.

Maybe things changed since I left Julia, but that was December 2023, for years after this blog post.

[arbitrandomuser]

hey , what happened to LoopModels ?

[celrod]

I'm still working on it. I'm currently working on a cache tile-size optimization algorithm that should (a) handle trees (a set of loops can be merged at some cache levels and split at others, e.g. in an MLP it may carry an output through the L3 cache, while doing sub-operations in the L2/L1/registers) (b) converge reasonably quickly so compile times are acceptable.

This is the last step before I move to code generation and then generating a ton of test cases/debugging.

My goal is some form of release by the end of the year.

[arbitrandomuser]

oh , is it closed source now ? i couldnt find it on github anymore , github.com/LoopModels returns a 404.

[celrod]

Yeah, for now. I'd like it to be open, but I also want to potentially be able to make money/a living off of it. My dream would be that it can be open while hardware vendors pay me to optimize for their hardware. For how, being closed gives me more options. It's a lot easier to open in the future than to close, so it's just keeping options open.

I've thought a lot more about the engineering than any sort of marketing or businesses plan, so I just want to defer those.