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Johannes Messner

@atomicflndr

🇪🇺 automating accounting. Prev. research @Aleph__Alpha
Berlin johannesmessner.com Joined December 2016
304 Following 320 Followers 413 Posts

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Johannes Messner @atomicflndr
The last thing I worked on at Aleph Alpha!
With @SohirMaskey Constantin Eichenberg @douglasahorr

tl;dr:
- Quantisation-aware training works really well
- If you have a fixed memory budget you should probably go many parameters - few bits
- k-means quant. is better than uniform
Graphcore Research Verified account @GCResearchTeam Mar 12
Would you rather use 1 million × 16-bit weights, 4 million × 4-bit weights, or even 16 million × 1-bit weights?

In joint work between Aleph Alpha Research and Graphcore, we asked this question of LLMs — the answer encouraged us to embrace the wonder ✨ of 1-bit weights, which can outperform 4-bit and 16-bit weights on a fixed weight memory budget.

In our work
- ⚖️ A scaling laws evaluation prompts us to consider very low-bit formats
- 📈 Scaled-up tests show the power of memory-matched models with 1-bit weights
- ⚡ Kernel benchmarking demonstrates their feasibility for autoregressive inference

Read all about it in our blog and paper (link below! ⬇️)

Massive thanks to our collaborators at Aleph Alpha Research!

Authors: @SohirMaskey, Constantin Eichenberg, @atomicflndr and @douglasahorr
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Johannes Messner @atomicflndr
Seeing this pushback a lot - and it‘s fair!

However, these models don’t have a fixed vocabulary, i.e. there are infinitely many words the model can operate over instead of a finite set of tokens.
I wouldn't really consider these to be tokenizer-free tbh.

Unlike Hnets, these models are word level. The sequence is turned into words (this is literally called tokenization).

Then, the bytes of these words are turned into embeddings, which are then processed by a model.
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