Lightning-AI / Lightning-AI/litgpt
Automatically infer and download the tokenizer in pretrain?
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Description
Should we automatically infer and download the tokenizer config when no `--tokenizer_dir` is provided in `litgpt pretrain`?
I.e.,
```bash
litgpt download \
--repo_id EleutherAI/pythia-14m \
--tokenizer_only true
litgpt pretrain \
--model_name pythia-14m \
--data ... \
--tokenizer_dir checkpoints/EleutherAI/pythia-14m
```
becomes
```bash
litgpt pretrain \
--model_name pythia-14m \
--data ... \
```
(The tokenizer json is saved in the out put directory perhaps.)
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Research direction
Start with the `litgpt pretrain` command and its existing `--tokenizer_dir` handling, then trace how the `litgpt download --tokenizer_only true` flow stores tokenizer files. The work is complete when pretraining can infer and download the tokenizer without `--tokenizer_dir`, with the tokenizer JSON saved in the chosen output directory.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python
- Domain
- machine-learning
- Issue type
- Feature
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100