code: def test_dynamic(self):
      def f(x):
          return x.cos()
  
      inp = (T(10),)
      self.assertNotZero(calculate_runtime(f, *inp))
  
imports: import torch
  from torch._inductor import metrics
  from torch._inductor.compile_fx import compile_fx, count_bytes_inner
  from torch.testing._internal.common_utils import TestCase
  from torch.testing._internal.inductor_utils import HAS_CUDA
label_desc: Use image node_id 4 for calling the MemoryBoundedTests obj's underlying member method code with example usage: obj.test_dynamic() and returns: x