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Consistency diffusion language models: Up to 14x faster, no quality loss

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Re: Consistency diffusion language models: Up to 14x faster, no quality loss

#11

Earlier quoted context omitted.

Diffusion language models seem poised to smash purely autoregressive models. I'm giving it 1-2 years.

Feels like the sodium ion battery vs lithium ion battery thing, where there are theoretical benefits of one but the other has such a head start on commercialization that it'll take a long time to catch up.

Same with digital vs analog

Re: Consistency diffusion language models: Up to 14x faster, no quality loss

#12
Releasing this on the same day as Taalas's 16,000 token-per-second acceleration for the roughly comparable Llama 8B model must hurt!

I wonder how far down they can scale a diffusion LM? I've been playing with in-browser models, and the speed is painful.

https://taalas.com/products/

Re: Consistency diffusion language models: Up to 14x faster, no quality loss

#13
post #12

Releasing this on the same day as Taalas's 16,000 token-per-second acceleration for the roughly comparable Llama 8B model must hurt! I wonder how far down they can scale a diffusion LM? I've been playing with in-browser models, and the speed is painful. https://taalas.com/products/

Nothing to do with each other. This is a general optimization. Taalas' is an ASIC that runs a tiny 8B model on SRAM.

But I wonder how Taalas' product can scale. Making a custom chip for one single tiny model is different than running any model trillions in size for a billion users.

Roughly, 53B transistors for every 8B params. For a 2T param model, you'd need 13 trillion transistor assuming scale is linear. One chip uses 2.5 kW of power? That's 4x H100 GPUs. How does it draw so much power?

If you assume that the frontier model is 1.5 trillion models, you'd need an entire N5 wafer chip to run it. And then if you need to change something in the model, you can't since it's physically printed on the chip. So this is something you do if you know you're going to use this exact model without changing anything for years.

Very interesting tech for edge inference though. Robots and self driving can make use of these in the distant future if power draw comes down drastically. 2.4kW chip running inside a robot is not realistic. Maybe a 150w chip.

Re: Consistency diffusion language models: Up to 14x faster, no quality loss

#14
post #12

Releasing this on the same day as Taalas's 16,000 token-per-second acceleration for the roughly comparable Llama 8B model must hurt! I wonder how far down they can scale a diffusion LM? I've been playing with in-browser models, and the speed is painful. https://taalas.com/products/

Just tried this. Holy fuck.

I'd take an army of high-school graduate LLMs to build my agentic applications over a couple of genius LLMs any day.

This is a whole new paradigm of AI.

Re: Consistency diffusion language models: Up to 14x faster, no quality loss

#16
post #3

Google is working on a similar line of research. Wonder why they haven't rolled out a GPT40 scaled version of this yet

Probably because it's expensive. But I wish there were more "let's scale this thing to the skies" experiments from those who actually can afford to scale things to the skies.

Scaling laws mean that there's not much need to actually scale things to the skies. Instead, you can run a bunch of experiments at small scale, fit the scaling law parameters, then extrapolate. If the predicted outcome is disappointing (e.g. it's unlikely to beat the previous scaled-to-the-sky model), you can save the really expensive experiment for a more promising approach.

It would certainly be nice though if this kind of negative result was published more often instead of leaving people to guess why a seemingly useful innovation wasn't adopted in the end.

Re: Consistency diffusion language models: Up to 14x faster, no quality loss

#19

I do wonder why diffusion models aren't used alongside constraint decoding for programming - surely it makes better sense then using an auto-regressive model.

Diffusion models need to infer the causality of language from within a symmetric architecture (information can flow forward or backward). AR forces information to flow in a single direction and is substantially easier to control as a result. The 2nd sentence in a paragraph of English text often cannot come before the first or the statement wouldn't make sense. Sometimes this is not an issue (and I think these are cases where parallel generation makes sense), but the edge cases are where all the money lives.

Re: Consistency diffusion language models: Up to 14x faster, no quality loss

#20

If this means there’s a 2x-7x speed up available to a scaled diffusion model like Inception Mercury, that’ll be a game changer. It feels 10x faster already…

Diffusion language models seem poised to smash purely autoregressive models. I'm giving it 1-2 years.

One appeal of it is for RL. If it ends up being a lot faster for generation, you'll be able to do a lot more RL.

If people can make RL scalable-- make it so that RL isn't just a final phase, but something which is as big as the supervised stuff, then diffusion models are going to have an advantage.

If not, I think autoregressive models will still be preferred. Diffusion models become fixed very fast, they can't actually refine their outputs, so we're not talking about some kind of refinement along the lines of: initial idea -> better idea -> something actually sound.

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