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Catch exception from ONNX conversion #4034

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Aug 9, 2021
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Catch exception from ONNX conversion #4034

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5 changes: 4 additions & 1 deletion nni/retiarii/evaluator/pytorch/lightning.py
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Original file line number Diff line number Diff line change
Expand Up @@ -178,7 +178,10 @@ def validation_step(self, batch, batch_idx):
y_hat = self(x)

if not self._already_exported:
self.to_onnx(self.export_onnx, x, export_params=True)
try:
self.to_onnx(self.export_onnx, x, export_params=True)
except RuntimeError as e:
warnings.warn(f'ONNX conversion failed. As a result, you might not be able to use visualization. Error message: {e}')
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@chenbohua3 chenbohua3 Aug 6, 2021 •
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when fail to export onnx, does self._already_exported should be False?

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It shouldn't try to export again.

self._already_exported = True

self.log('val_loss', self.criterion(y_hat, y), prog_bar=True)
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