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[Fix] fix growing mem usage pytorch crnn #1357

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Oct 20, 2023
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5 changes: 1 addition & 4 deletions doctr/models/recognition/crnn/pytorch.py
Original file line number Diff line number Diff line change
Expand Up @@ -128,12 +128,9 @@ def __init__(
self.feat_extractor = feature_extractor

# Resolve the input_size of the LSTM
self.feat_extractor.eval()
with torch.no_grad():
with torch.inference_mode():
out_shape = self.feat_extractor(torch.zeros((1, *input_shape))).shape
lstm_in = out_shape[1] * out_shape[2]
# Switch back to original mode
self.feat_extractor.train()

self.decoder = nn.LSTM(
input_size=lstm_in,
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