set model to training mode before starting training #215
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From
pytorch-lightning2.2 onwards, the models are not automatically set to train mode during training (see section "Improved Handling of Evaluation Mode" in the release notes). this affects e.g. loaded Huggingface transformer models.With this PR, we explicitly set the model into training mode via
model.train()before the actual training starts.To just partly train the model (e.g. only some layers), the user is advised to override the
train()method in their model.