31 lines
852 B
Python
31 lines
852 B
Python
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from abc import ABC
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from collections import OrderedDict
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class TrainingStepVariations(ABC):
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"""
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Houses all variations of training steps
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"""
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def training_step(self, batch, batch_idx, optimizer_idx=None):
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"""Lightning calls this inside the training loop"""
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# forward pass
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x, y = batch
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x = x.view(x.size(0), -1)
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y_hat = self(x)
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# calculate loss
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loss_val = self.loss(y, y_hat)
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# alternate possible outputs to test
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if self.trainer.batch_idx % 1 == 0:
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output = OrderedDict({
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'loss': loss_val,
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'progress_bar': {'some_val': loss_val * loss_val},
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'log': {'train_some_val': loss_val * loss_val},
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})
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return output
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if self.trainer.batch_idx % 2 == 0:
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return loss_val
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