code: def test_meta_dtensor(self):
      device_mesh = self.build_device_mesh()
      dist_specs = [[Shard(0)], [Replicate()]]
      meta_tensor = torch.randn(1024, 2048, device="meta")
      for dist_spec in dist_specs:
          # Test distribute_tensor on meta tensor
          meta_dtensor = distribute_tensor(
              meta_tensor, device_mesh, dist_spec
          )
          self.assertTrue(meta_dtensor.is_meta)
          meta_dtensor = torch.empty_like(
              meta_dtensor, device=self.device_type
          )
          torch.nn.init.constant_(meta_dtensor, 1.2)
          value_tensor = torch.empty_like(
              meta_dtensor.to_local()
          ).fill_(1.2)
          self.assertFalse(meta_dtensor.is_meta)
          self.assertEqual(meta_dtensor.device.type, self.device_type)
          self.assertEqual(meta_dtensor.to_local(), value_tensor)
          # Test from_local on meta tensor
          meta_dtensor = DTensor.from_local(
              meta_tensor, device_mesh, dist_spec
          )
          meta_dtensor = torch.empty_like(
              meta_dtensor, device=self.device_type
          )
          torch.nn.init.constant_(meta_dtensor, 1.5)
          self.assertEqual(meta_dtensor.device.type, self.device_type)
          value_tensor = torch.empty_like(
              meta_dtensor.to_local()
          ).fill_(1.5)
          self.assertEqual(meta_dtensor.to_local(), value_tensor)
  
imports: import torch
  import torch.nn.functional
  from numpy.testing import assert_array_equal
  from torch.distributed._functional_collectives import AsyncCollectiveTensor
  from torch.distributed._tensor import DeviceMesh, distribute_tensor, DTensor, init_device_mesh
  from torch.distributed._tensor.placement_types import _Partial, Replicate, Shard
  from torch.distributed.tensor.parallel import ColwiseParallel, parallelize_module, RowwiseParallel
  from torch.testing._internal.common_utils import run_tests
  from torch.testing._internal.distributed._tensor.common_dtensor import DTensorTestBase, with_comms
label_desc: Use image node_id 2 for calling the DTensorTest obj's underlying member method code with example usage: obj.test_meta_dtensor() without return types