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torch.nn.utils.clip_grad_norm_

torch.nn.utils.clip_grad_norm_(parameters, max_norm, norm_type=2)[source]

Clips gradient norm of an iterable of parameters.

The norm is computed over all gradients together, as if they were concatenated into a single vector. Gradients are modified in-place.

Parameters
  • parameters (Iterable[Tensor] or Tensor) – an iterable of Tensors or a single Tensor that will have gradients normalized

  • max_norm (float or int) – max norm of the gradients

  • norm_type (float or int) – type of the used p-norm. Can be 'inf' for infinity norm.

Returns

Total norm of the parameters (viewed as a single vector).

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