code: def setUp(self, max_abs_diff=1e-3, max_rel_diff=1, iters=7):
      self.max_abs_diff = max_abs_diff
      self.max_rel_diff = max_rel_diff
      self.iters = iters
      torch.manual_seed(9876)
  
imports: from itertools import product
  import random
  import unittest
  import torch
  import apex
label_desc: Use image node_id 1 for calling the TestFusedOptimizer obj's underlying member method code with example usage: obj.setUp(max_abs_diff, max_rel_diff, iters) without return types