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[T5] Fix load weights function #8528

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Merged
patrickvonplaten merged 2 commits into from
Nov 13, 2020
Merged

[T5] Fix load weights function #8528

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b1c70dd
fix load weights
patrickvonplaten Nov 13, 2020
05e41b9
delete line
patrickvonplaten Nov 13, 2020
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19 changes: 19 additions & 0 deletions src/transformers/modeling_t5.py
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Original file line number Diff line number Diff line change
Expand Up @@ -108,19 +108,38 @@ def load_tf_weights_in_t5(model, config, tf_checkpoint_path):
continue
pointer = model
array = tf_weights[txt_name]

for m_name in name:
if re.fullmatch(r"[A-Za-z]+_\d+", m_name):
scope_names = re.split(r"_(\d+)", m_name)
else:
scope_names = [m_name]
if scope_names[0] in ["kernel", "scale", "embedding"]:
pointer = getattr(pointer, "weight")
elif scope_names[0] == "self_attention":
pointer = getattr(pointer, "layer")
pointer = pointer[0]
elif scope_names[0] == "enc_dec_attention":
pointer = getattr(pointer, "layer")
pointer = pointer[1]
elif scope_names[0] == "dense_relu_dense":
pointer = getattr(pointer, "layer")
pointer = pointer[2]
elif scope_names[0] == "rms_norm":
if hasattr(pointer, "layer_norm"):
pointer = getattr(pointer, "layer_norm")
elif hasattr(pointer, "final_layer_norm"):
pointer = getattr(pointer, "final_layer_norm")
elif scope_names[0] == "scale":
pointer = getattr(pointer, "weight")
elif scope_names[0] == "output_bias" or scope_names[0] == "beta":
pointer = getattr(pointer, "bias")
elif scope_names[0] == "squad":
pointer = getattr(pointer, "classifier")
elif scope_names[0] == "decoder" and name[1] == "logits":
continue
elif scope_names[0] == "logits":
pointer = getattr(pointer, "lm_head")
else:
try:
pointer = getattr(pointer, scope_names[0])
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