


row_indices = [0, 1]
      >>> values = [[[1, 2], [3, 4]], [[5, 6], [7, 8]]]
      >>> torch.sparse_bsc_tensor(torch.tensor(ccol_indices, dtype=torch.int64),
      ...                         torch.tensor(row_indices, dtype=torch.int64),
      ...                         torch.tensor(values), dtype=torch.double)
      tensor(ccol_indices=tensor([0, 1, 2]),
             row_indices=tensor([0, 1]),
             values=tensor([[[1., 2.],
                             [3., 4.]],
                            [[5., 6.],
                             [7., 8.]]]), size=(2, 2), nnz=2, dtype=torch.float64,
             layout=torch.sparse_bsc)


