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add a notebook trying to reproduce chinchilla scaling laws. I can't get the numbers to be exactly right, have to look at more

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Andrej Karpathy 2023-01-04 00:59:34 +00:00
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@ -109,7 +109,10 @@ Features / APIs
Suspiciousness
- Current initialization (PyTorch default) departs from GPT-2. In a very quick experiment I found it to be superior to the one suggested in the papers, but that can't be right?
- I don't currently seem to need gradient clipping but it is very often used (?). Nothing is exploding so far at these scales but maybe I'm laeving performance on the table. Evaluate with/without.
- I am still not 100% confident that my GPT-2 small reproduction hyperparameters are good, if someone has reproduced GPT-2 I'd be eager to exchange notes ty
- I keep seeing different values cited for weight decay and AdamW betas, look into
- I can't exactly reproduce Chinchilla paper results, see [scaling_laws.ipynb](scaling_laws.ipynb) notebook
Results

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