Specify model path for offline loading

[facebookresearch]

Specify model path for offline loading

[efwfe]

~/.cache is the cache path, after the translator download all the file. cioy the file to the offline same location can reload it.
Hope this may be helpful.

[jgwinnup]

Hi - I filed a similar issue on fairseq2 facebookresearch/fairseq2#6, looks like the issue is that I was specifying an absolute path with a leading slash (e.g. checkpoint: 'file:///foo/bar/model.pth') but was asked to just use two slashes (checkpoint: 'file://foo/bar/model.pth') and that worked.

[cndn]

Hey @jgwinnup - Good call, for now you could override path in asset cards e.g. https://github.com/facebookresearch/seamless_communication/blob/main/src/seamless_communication/assets/cards/seamlessM4T_large.yaml#L10, with a prefix "file://" to indicate local path.

Also paths are cached so you should only need to download it once anyway.

[jgwinnup]

Thanks for the pointer - when I specify a file:// URI I get the following error:

fairseq2.assets.card.AssetCardError: The value of the field 'checkpoint' of the asset card 'seamlessM4T_large' must be a valid URI, but is 'file:///foo/bar/seamless-m4t-large/multitask_unity_large.pt' instead.

I can work around this by starting up a python http.server and serve the file locally, but it would be nice to have proper file:// URI support.

[cndn]

Hey @jgwinnup double checking the logic here it should work https://github.com/facebookresearch/fairseq2/blob/main/src/fairseq2/assets/download_manager.py#L132. Could you print out pathname here and see if it's expected?