offline mode for firewalled envs (#10407)

* offline mode start

* add specific values

* fix fallback

* add test

* better values check and range

* test that actually works

* document the offline mode

* Apply suggestions from code review

Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>

* more strict check

* cleaner test

* pt-only test

* style

Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>
This commit is contained in:
Stas Bekman
2021-03-05 17:27:48 -08:00
committed by GitHub
parent 90ecc29656
commit 88a951e3cc
7 changed files with 111 additions and 5 deletions

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@@ -155,6 +155,31 @@ If you expect to be downloading large volumes of models (more than 1,000) from o
your CI setup, or a large-scale production deployment), please cache the model files on your end. It will be way
faster, and cheaper. Feel free to contact us privately if you need any help.
### Offline mode
It's possible to run 🤗 Transformers in a firewalled or a no-network environment.
Setting environment variable `TRANSFORMERS_OFFLINE=1` will tell 🤗 Transformers to use local files only and will not try to look things up.
Most likely you may want to couple this with `HF_DATASETS_OFFLINE=1` that performs the same for 🤗 Datasets if you're using the latter.
Here is an example of how this can be used on a filesystem that is shared between a normally networked and a firewalled to the external world instances.
On the instance with the normal network run your program which will download and cache models (and optionally datasets if you use 🤗 Datasets). For example:
```
python examples/seq2seq/run_seq2seq.py --model_name_or_path t5-small --dataset_name wmt16 --dataset_config ro-en ...
```
and then with the same filesystem you can now run the same program on a firewalled instance:
```
HF_DATASETS_OFFLINE=1 TRANSFORMERS_OFFLINE=1 \
python examples/seq2seq/run_seq2seq.py --model_name_or_path t5-small --dataset_name wmt16 --dataset_config ro-en ...
```
and it should succeed without any hanging waiting to timeout.
## Do you want to run a Transformer model on a mobile device?
You should check out our [swift-coreml-transformers](https://github.com/huggingface/swift-coreml-transformers) repo.