class_docstr: Tests parameter flattening and shard metadata logic.
docstr: Tests that numel is preserved after flattening when there are no shared
  parameters in the module.
code: def test_numel_without_shared_params(self):
      """
      Tests that numel is preserved after flattening when there are no shared
      parameters in the module.
      """
      self.run_subtests(
          {"half": [False, True]},
          self._test_numel_without_shared_params,
      )
  
imports: import sys
  import torch
  import torch.nn
  from torch import distributed
  from torch.distributed.fsdp import FullyShardedDataParallel
  from torch.distributed.fsdp._flat_param import FlatParamHandle, FlatParamShardMetadata, HandleShardingStrategy
  from torch.testing._internal.common_distributed import skip_if_lt_x_gpu
  from torch.testing._internal.common_fsdp import FSDPTest
  from torch.testing._internal.common_utils import run_tests, TEST_WITH_DEV_DBG_ASAN
label_desc: Use image node_id 11 for calling the TestFlattenParams obj's underlying member method code with example usage: obj.test_numel_without_shared_params() without return types