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edunteman

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Show HN: BVisor – An Embedded Bash Sandbox, 2ms Boot, Written in Zig

github.com
24 points·by edunteman·5 tháng trước·9 comments

Just-in-Time Thanksgiving Cookbook

cookwithbutter.com
2 points·by edunteman·8 tháng trước·0 comments

Show HN: Butter – A Behavior Cache for LLMs

butter.dev
50 points·by edunteman·9 tháng trước·22 comments

The Messy World of Deterministic Agents

blog.butter.dev
3 points·by edunteman·9 tháng trước·0 comments

Show HN: Butter, a muscle memory cache for LLMs

docs.butter.dev
23 points·by edunteman·9 tháng trước·11 comments

comments

edunteman
·11 ngày trước·discuss
Nice work! Had to do similar serverside for stripping named entities and ended up burning way too much LLM cash
edunteman
·2 tháng trước·discuss
I hate to be that guy, but you can just choose to do these things. Learn to set SMART goals. Then set just one, so there's no excuses around priorities. Obviously, choose well. Make that goal your life.
edunteman
·4 tháng trước·discuss
I’ve been a big fan of “what’s the thinnest this could be” interpretations of sandboxes. This is a great example of that. On the other end of the spectrum there’s just-bash from the Vercel folks.
edunteman
·4 tháng trước·discuss
The llm detector in my brain went off too
edunteman
·5 tháng trước·discuss
Your repo was actually a major point of reference! Thank you for open sourcing it. Ironically when I first got into zig I built a similar generator for python bridging which your project reminded me of https://github.com/erik-dunteman/zigpy

Ultimate decision for not using a bindings generator was primarily to deeply understand NAPI.
edunteman
·5 tháng trước·discuss
Exactly, that’d be the intention. For compute-heavy or long running jobs you’d still probably want a dedicated VM like on E2B but for quick stuff, bVisor
edunteman
·5 tháng trước·discuss
Correct, your PATH resolves to your local tools as if it was unprotected bash, but syscalls are filtered/virtualized
edunteman
·5 tháng trước·discuss
Hell yeah, love to hear it! Happy to answer any questions or issues you run into
edunteman
·6 tháng trước·discuss
The part that most resonates with me is the lingering feeling of “oh but it must be my fault for underspecifying” which blocks the outright belief that models are just still sloppy at certain things
edunteman
·6 tháng trước·discuss
[dead]
edunteman
·9 tháng trước·discuss
Good question, I imagine you’d need to set up an ngrok endpoint to tunnel to local LLMs.

In those cases perhaps an open source (maybe even local) version would make more sense. For our hosted version we’d need to charge something, given storage requirements to run such a service, but especially for local models that feels wrong. I’ve been considering open source for this reason.
edunteman
·9 tháng trước·discuss
Ah yes that makes sense, have heard of those cases too but hadn’t put much thought into it. Thanks for pointing it out!
edunteman
·9 tháng trước·discuss
I’d love your opinion here!

Right now, we assume first call is correct, and will eagerly take the first match we find while traversing the tree.

One of the worst things that could currently happen is we cache a bad run, and now instead of occasional failures you’re given 100% failures.

A few approaches we’ve considered - maintain a staging tree, and only promote to live if multiple sibling nodes (messages) look similar enough. Decision to promote could be via tempting, regex, fuzzy, semantic, or LLM-judged - add some feedback APIs for a client to score end-to-end runs so that path could develop some reputation
edunteman
·9 tháng trước·discuss
Very, very common approach!

Wrote more on that here: https://blog.butter.dev/the-messy-world-of-deterministic-age...
edunteman
·9 tháng trước·discuss
Awesome to hear you’ve done similar. JSON artifacts from runs seem to be a common approach for building this in house, similar to what we did with the muscle mem. Detecting cache misses is a bit hard without seeing what the model sees, part of what inspired this proxy direction.

Thanks for the nice words!
edunteman
·9 tháng trước·discuss
I feel the same - we’ll use it as long as we can since it’s customer aligned but I wouldn’t be surprised if competitive or COGs costs force us to change in the future.
edunteman
·9 tháng trước·discuss
It’s bring-your-own-key, so any calls proxied to OpenAI just end up billing directly to your account as normal.

You’d only pay Butter for calls that don’t go to the provider. That’d be a separate billing account with butter.
edunteman
·9 tháng trước·discuss
I couldn’t see how it wouldn’t be, as it’s a free market opt-in decision to use Butter
edunteman
·9 tháng trước·discuss
I've got a blog on this from the launch of Muscle Mem, which should paint a better picture https://erikdunteman.com/blog/muscle-mem

Computer use agents (as an RPA alternative) is the easiest example to reach to: UIs change but not often, so the "trajectory" of click and key entry tool calls is mostly fixed over time and worth feeding to the agent as a canned trajectory. I discuss the flaws of computer use and RPA in the blog above.

A counterexample is coding agents: it's a deeply user-interractive workflow reading from a codebase that's evolving. So the set of things the model is inferencing on is always different, and trajectories are never repeated.

Hope this helps
edunteman
·9 tháng trước·discuss
Thanks! For langchain you can repoint your base_url in the client. Autogpt I'm not as familiar with. Closed loop robotics using LLMs may be a stretch for now, especially since vision is a heavy component, but theoretically the patterns baked into small language models running on-device or hosted LLMs at higher level planning loops, could be emulated by a butter cache if observed in high enough volume.