code: def gaussian_kernel(x, y, gamma):
      D = my_cdist(x, y)
      K = torch.zeros_like(D)
  
      K.add_(torch.exp(D.mul(-gamma)))
  
      return K
  
label_desc: Use image node_id 2 for calling a global function with example usage: gaussian_kernel(x, y, gamma) and returns: K