code: def test_layer_norm_half(
      self,
      batch_size,
      contiguous,
      elementwise_affine,
      mixed_fused,
      dtype,
      memory_efficient,
  ):
      self._test_fused_layer_norm(
          batch_size,
          contiguous,
          elementwise_affine,
          mixed_fused,
          dtype,
          memory_efficient,
          fwd_thresholds=dict(rtol=1e-3, atol=1e-3),
          bwd_thresholds=dict(rtol=1e-3, atol=1e-3),
      )
  
imports: import torch
  from apex.normalization import FusedLayerNorm
  from apex.normalization import FusedRMSNorm
  from apex.normalization import MixedFusedLayerNorm
  from apex.normalization import MixedFusedRMSNorm
  from torch.testing._internal import common_utils
  from torch.testing._internal.common_device_type import instantiate_device_type_tests
  from itertools import product
label_desc: Use image node_id 6 for calling the TestFusedLayerNorm obj's underlying member method code with example usage: obj.test_layer_norm_half(batch_size, contiguous, elementwise_affine, mixed_fused, dtype, memory_efficient) without return types