message: Fix resnet inference block mem size
  Summary: The size increase is acceptable due to poplar changes.
  Test Plan: Test now ok
  Reviewers: #tensorflow, romand
diff: @@ -138,7 +138,7 @@ class Resnet18_No_Batchnorm(xla_test.XLATestCase):
  evts = ipu.utils.extract_all_events(out)
  size = ipu.utils.get_memory_size_from_events(evts)
  - self.assertTrue(size < 38750000)
  + self.assertTrue(size < 42000000)
  def testTraining(self):
  with self.session() as sess:
  