code: def compare_gradients(self, module, traced, rtol=1e-3, atol=1e-3):
      ref_grad = {
          key: param.grad for key, param in module.named_parameters()
      }
      res_grad = {
          key: param.grad for key, param in traced.named_parameters()
      }
      self.assertTrue(
          self.compare_dict_tensors(
              ref_grad, res_grad, rtol=rtol, atol=atol
          )
      )
  
imports: import functools
  import unittest
  import torch
  import torch._inductor
  from torch._dynamo.test_case import run_tests, TestCase
  from torch._dynamo.utils import counters
  from torch.testing._internal.inductor_utils import HAS_CUDA
label_desc: Use image node_id 4 for calling the TestGroupBatchFusion obj's underlying member method code with example usage: obj.compare_gradients(module, traced, rtol, atol) without return types