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loss-landscapes's Issues

GPU support?

Hi,

It there any way to run loss_landscapes.random_plane on GPU? I tried to run it on Google's Colab with GPU but got an error "
RuntimeError: expected backend CUDA and dtype Float but got backend CPU and dtype Float"

Plotting optimizer path using PCA Directions

Hi

The paper "[Visualizing the loss landscape of neural nets]" also uses PCA Directions to plot the optimizer path. Which I think is not implemented here. It would be great if its implemented.

[bug?] bias in filter noramlize

Thank you for the beautiful implementation!
For the bias term in filter normalize, normalize is applied to filter wise multiple times in your implementation.ใ€€
I believe the following implementation is correct. What do you think?

    def filter_normalize_(self, ref_point: 'ModelParameters', order=2):
        """
        In-place filter-wise normalization of the tensor.
        :param ref_point: use this model's filter norms, if given
        :param order: norm order, e.g. 2 for L2 norm
        :return: none
        """
        for l in range(len(self.parameters)):
            # normalize one-dimensional bias vectors
            if len(self.parameters[l].size()) == 1:
                self.parameters[l] *= (ref_point.parameters[l].norm(order) / self.parameters[l].norm(order))
            else:
                # normalize two-dimensional weight vectors
                for f in range(len(self.parameters[l])):
                    self.parameters[l][f] *= ref_point.filter_norm((l, f), order) / (self.filter_norm((l, f), order))

your code

original implemention

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