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Show HN: Running 104GB Qwen3.8-Flash-Next on 48GB Mac with at ~12 tok/s

https://github.com/carloslfu/slotstream
41•carloslfu•1h ago•37 comments

Show HN: Semantic Overlays – an NX bit for LLM prompt injection (live demo)

https://semantic-overlays.vercel.app/
3•joshua_s_penman•25m ago•0 comments

Show HN: Laser Graffiti

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246•con•3d ago•55 comments

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91•CoolNamesAllTkn•5d ago•23 comments

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https://openheim.io/
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https://github.com/axem-solutions/shaide
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https://mqlens.com/
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30•beerglass•21h ago•17 comments

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https://videoai.me/live
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Show HN: FnScribe – Open-source, offline dictation for macOS

https://github.com/AlgorithmicResearchGroup/fnscribe
36•modagent•4d ago•25 comments

Show HN: Serendipity – rediscover the web one interesting page at a time

https://serendipity.surf/
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https://www.seatlr.com/
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https://github.com/glukicov/slideops
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https://wilsonharper.net/projects/businesscard/
217•WilsonHarper•4d ago•30 comments

Show HN: I missed the moving blocks, so I built a real Linux disk defragmenter

https://github.com/gbin/defragger
96•gbin•6d ago•72 comments

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118•andrewww-dev•6d ago•47 comments

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https://generativeide.com/
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Show HN: Chaosword – A Crossword?

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2•ghosts_•16h ago•0 comments
Open in hackernews

Show HN: Running 104GB Qwen3.8-Flash-Next on 48GB Mac with at ~12 tok/s

https://github.com/carloslfu/slotstream
39•carloslfu•1h ago
I built slotstream, a way to run Qwen3.8-Flash-Next 4-bit on a low-memory mac starting from 16GB, a 125B parameter model that would need 100GB+ memory/RAM, thanks to expert-offloading/ssd-streaming. Easy to install/update, and mac-native using MLX and Swift.

It ships with auto-mode, which makes a good tradeoff between memory usage and speed. I'll be implementing and porting the MTP module for speculative decoding next

Comments

AmazingTurtle•1h ago
There are already a handful of repos doing essentially exactly this: `mlx-moe-offload`, `streamlx`, `mlx-moe`, `mlx-flash`, and `deepseek-v4-flash-mlx` - i.e. keep the resident parts of an MoE in unified memory and page/stream routed experts from SSD on Apple Silicon.

At this point I'd much rather see people collaborate on one of these implementations, benchmark against them, or upstream the useful bits into MLX/MLX-LM instead of producing yet another near-identical repo.

The local-LLM ecosystem really does not need every implementation idea rediscovered five times and wrapped in a new README. AI-assisted coding makes producing a new repo cheap; maintaining, benchmarking, and integrating one is the actually valuable part.

api•56m ago
> every implementation idea rediscovered five times and wrapped in a new README

That's open source since forever, unfortunately.

docheinestages•46m ago
It's what happens when you don't do market research.
carloslfu•44m ago
I'm sorry this makes it seem like I didn't do my research. I did a TON. To fix it I'll add a benchmark/comparison table. Also, I wouldn't call it market research since this is not commercial AT ALL.
EyMaddis•37m ago
Hey Carlos, thanks for sharing with the community! Appreciated
carloslfu•27m ago
thanks!
genxy•33m ago
Does a painter check to make sure that a portrait hasn't been painted? What a dismissive comment.
oceanplexian•26m ago
Half the people on here are using Ollama. No one is doing market research.
carloslfu•42m ago
I agree with the sentiment, but have you seen those videos in which all men say other men are gay? This feels like the same, so much AI paranoia!

I genuinely want to contribute. And hey! I was doing oss this since 2014 so waay before AI was cool.

Barbing•55m ago
Vouched especially since OP might have a perspective on this. And readers may want to look up those other repos and compare for themselves.
carloslfu•46m ago
Thanks for the feedback! I'll create a section with a benchmark and comparisons. This will hold the project accountable and speed things up imo
dofm•50m ago
AI NIH
carloslfu•45m ago
Sorry, I don't get "NIH". what's that?
noir_lord•42m ago
Not Invented Here.
carloslfu•28m ago
Ah! Yeah, I didn't invent anything (yet!). The goal is to see how far I can take it in terms of speed without consuming that much RAM.
dofm•18m ago
I'm only joking anyway — it's more a comment on the whole AI-accelerated trend of everyone having their own version of a thing.

I do agree that, ultimately, combining your efforts with others working in this whole area is probably really worth it, but I can see how there's an ease of pushing forward on your own these days.

I do not have fast internet so I am not sure when I'll really be able to download the weights but I do have an M1 Max to try this on, so I will at some point!

carloslfu•49m ago
I see your point. As an oss defender myself, I agree, however, the spirit of this is to see how fast I can make it. I'm sharing this with the community, which I think is aligned with the original oss spirit.

It's an experiment for myself but I am committing to maintain it. I've been an oss person for a loooong time, way before AI was a thing. Think about it as a new, from-scratch take at it, not as a re-reproduction.

kzrdude•44m ago
And there are `Mference` and `SwiftLM` too, I think they are doing the same use case.
genxy•35m ago
Why should they do that? For you? You could merge those projects and see if they get traction.
ErenayDev•42m ago
how much energy does it consume?
carloslfu•30m ago
Good one! I haven't measured this. I'll include it!
karmakaze•38m ago
It seems we could use a new kind of memory that streams the weight data in, like GDDR in reverse.
0x457•35m ago
High Bandwidth Flash? https://www.sandisk.com/company/newsroom/blogs/2025/scaling-...
carloslfu•25m ago
interesting!
carloslfu•26m ago
yes! I guess future hardware designs will have something like that!
drcongo•33m ago
"Disk is the gate that bites first"

AI;DR

drums8787•16m ago
The never ending gate bites.

How I have come to detest certain phrases.

embedding-shape•33m ago
> Hugging Face is the bottleneck, not your link.

README could clearly make use of a cleanup, seems to be more like a session log dump now than a good introduction to the project for a new user. Maybe try something like "Remove anything from the README.md that wouldn't be helpful to someone who sees this project with zero context, for the first time. Rewrite all paragraphs and sections to be concise and remove all fluff, leave only important details new users must know before using the project".

carloslfu•20m ago
thanks! I'll do!
Eufrat•18m ago
I hate this AI style writing because since it doesn’t really understand flow, it’s being inserted in irrelevant places and it is extremely irritating to read.
carloslfu•16m ago
I feel you! fix incomming
whartung•27m ago
I'm hoping to see progress in this space.

Folks talking about how 32G is not enough for local use, but then there's been work like this to empower it.

My hope is that the new 32G M6 will be "useful" locally, possibly because of work like this.

carloslfu•13m ago
yes! I'm bullish on this. there is a lot of work to do. I've been experimenting with pruning, distillation, and retraining too. I'm sure your 32gb m6 will run a badass local model!
prometheus1992•25m ago
It's hard to believe 16GB unified memory will give you 5 tok/sec unless you are ignoring the thermal warnings. I am running Qwen3.6-35B-A3B on my 16GB M3 and get 7-8 tokens/sec with all the optimizations while keeping the peak memory and thermal warnings at check. https://github.com/deepanwadhwa/samosa-chat