tf.global_norm(t_list, name=None)

tf.global_norm(t_list, name=None)

See the guide: Training > Gradient Clipping

Computes the global norm of multiple tensors.

Given a tuple or list of tensors t_list, this operation returns the global norm of the elements in all tensors in t_list. The global norm is computed as:

global_norm = sqrt(sum([l2norm(t)**2 for t in t_list]))

Any entries in t_list that are of type None are ignored.


  • t_list: A tuple or list of mixed Tensors, IndexedSlices, or None.
  • name: A name for the operation (optional).


A 0-D (scalar) Tensor of type float.


  • TypeError: If t_list is not a sequence.

Defined in tensorflow/python/ops/