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a Tsinghua University lab just put a project on GitHub that replaces a $400,000 H100 rack with a single 24GB graphics card. it's called ktransformers, and the trick is almost stupidly simple: the experts you actually use stay on the gpu, the ones you don't sit on the cpu... show more
35 条评论

cool until the latency hits

thank you bro

So it isn't "a single 24GB graphics card." It's a 24GB GPU bolted to a dual-socket Xeon server with between 382GB and 1TB of DDR5. Roughly $6–15k of hardware, not $400k — a real and interesting result, but not the one claimed. It all in the report numbers

Doesn't llama.cpp already offload experts in a MOE model? Or is this designed to work with non-MOE models?

This is not a random university, is the best university of China and right now the best of the world on AI.
> lab just put a project on GitHub > looks at the actual commit history > 1.3k commits, 0.1.0 release on Jul 29, 2024 Every. Single. Time.

👀

1. latency 2. it is neat tho

But every layer is picking different experts for different tokens? You'd have to be loading and unloading those experts at absurdly high speeds.

That’s the prefetch-weights option discussed on GitHub for llama.cpp?

AirLLM copy

One more... This topology eliminates the need for global cache coherence and enables the construction of NPUs using 28nm chiplets, reducing manufacturing costs by 18x compared to 3nm nodes.

It requires a 24GB GPU (e.g., RTX 4090) plus substantial system RAM (typically 382GB–1TB DDR5 on a dual-socket Xeon server), not just a single graphics card, making it far cheaper than a $400k H100 rack but not purely consumer-desktop hardware.

is ktransformers real?

10 years to get an response lol

hardware efficiency is getting impressive

I doubt the 28x speed up very much

quite an interesting repo

thank you, bro

What is the throughput (tokens per second)?

Caveats for running locally. 1. Works on Linux with CUDA/x86 kernels (AMX/AVX) 2. On M2, llama.cpp is better optimized. 3. Best suited for trillion scale MoE models locally.

gpu poor era ending quietly

Holy @grok this can't be real, right ?

Would it be ported to Mac too?

That's very cool and very useful

moving cold experts to cpu while keeping hot ones on gpu is the kind of practical hack that actually democratizes access.

Just gave this to Hermes, let’s see what it thinks

@grok is this deceptive? He claims one GPU then claims you need 4 GPU.

Oh yeah finally someone turned MegaTrain into a Github repo 🙌🙌🙌🙌

I've noticed efficiency tricks are becoming just as exciting as bigger models. My take making powerful AI easier to run changes who gets to experiment.

28x speedup is wild for a single gpu setup

So, they basically turned a massive hardware spend into a clever software trick. It's just optimizing where the actual heavy lifting happens.

Bro I built this check my github I am working on same since 3 weeks 😭😭😭😭

h100 racks are more expensive than b300s? lmao

So I can run Kimi k3 on my Rpi5 cluster (cough, 2).
