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Fix tf shared embedding #17730

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ArthurZucker
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@ArthurZucker ArthurZucker commented Jun 16, 2022

What does this PR do?

A hack was used to properly import the shared embedding weights, but it can be removed (removing it also is convenient for the sharding PR)

Found this while testing #17713. In HF's save_pretrained and load_pretrained the layer name is changed using name = "/".join(weight_name.split("/")[1:]). This was breaking for OPT as the layer name was 'decoder.embed_tokens/model.decoder.embed_tokens/weight:0' instead of 'tfopt_model/model/decoder/embed_tokens/weight:0'. The naming is strange and had to use a scope hack. The hack comes from BART

@ArthurZucker ArthurZucker self-assigned this Jun 16, 2022
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All the TF weights of OPT will need to be updated if this is approved. I think I can handle that along with #17713.

@patrickvonplaten patrickvonplaten marked this pull request as ready for review June 16, 2022 12:07
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@sgugger sgugger left a comment

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Thanks for fixing!

@@ -281,14 +281,14 @@ def test_inference_no_head(self):


@require_tf
@slow
# @slow
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Will need to be uncommented before merging.

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Think it's already fixed in the new commit

tests/models/opt/test_modeling_tf_opt.py Show resolved Hide resolved
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HuggingFaceDocBuilderDev commented Jun 16, 2022

The documentation is not available anymore as the PR was closed or merged.

@patrickvonplaten patrickvonplaten merged commit f44e2c2 into huggingface:main Jun 16, 2022
@ArthurZucker ArthurZucker deleted the fix_tf_shared_embedding branch June 16, 2022 12:31
sgugger pushed a commit that referenced this pull request Jun 16, 2022
* fix the naming

* from pt in test for now

* make style

* slow test and removed from_pt
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4 participants