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Support decoder-only arch in the factory #744

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Support decoder-only arch in the factory #744

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4 changes: 3 additions & 1 deletion xformers/factory/model_factory.py
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Original file line number Diff line number Diff line change
Expand Up @@ -292,6 +292,9 @@ def forward(

if not self.decoders:
return memory
else:
# Decoder-only
memory = src

# If decoder: either use the encoder ouput, or just decode, both options are possible
if len(self.decoders) > 0:
Expand All @@ -300,7 +303,6 @@ def forward(
for decoder in self.decoders:
tgt = decoder(
target=tgt,
# pyre-fixme[61]: `memory` is not always initialized here.
memory=memory,
input_mask=decoder_input_mask,
)
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