code: def test_inductor_reduce_scatter_tensor_coalesced(self):
      self._init_process_group()
  
      def func(args: List[torch.Tensor]) -> torch.Tensor:
          rs0 = torch.ops._c10d_functional.reduce_scatter_tensor_coalesced(
              args, "avg", self.world_size, "default"
          )
          rs0 = [
              torch.ops._c10d_functional.wait_tensor(out) for out in rs0
          ]
          return rs0
  
      args = [torch.rand(4, 4, device=self.device) for _ in range(4)]
      compiled = torch.compile(func)
      code = run_and_get_triton_code(compiled, args)
      (
          FileCheck()
          .check(
              "buf0 = torch.ops._c10d_functional.reduce_scatter_tensor_coalesced"
              ".default([arg0_1, arg1_1, arg2_1, arg3_1]"
          )
          .check("buf1 = buf0[0]")
          .check("buf2 = buf0[1]")
          .check("buf3 = buf0[2]")
          .check("buf4 = buf0[3]")
          .check("torch.ops._c10d_functional.wait_tensor.default(buf1")
          .check("torch.ops._c10d_functional.wait_tensor.default(buf2")
          .check("torch.ops._c10d_functional.wait_tensor.default(buf3")
          .check("torch.ops._c10d_functional.wait_tensor.default(buf4")
          # Expect no extra copy on return
          .check("return (buf1, buf2, buf3, buf4, )")
          .run(code)
      )
      out = compiled(args)
      correct = func(args)
      assert same(out, correct), f"{out} va {correct}"
  
      # Test aoti
      out = AOTIRunnerUtil.run("cuda", func, (args,))
      torch.cuda.synchronize()
  
imports: import unittest
  from typing import List
  import torch
  import torch.distributed
  from torch._C import FileCheck
  from torch._dynamo.utils import same
  from torch._inductor.utils import fresh_inductor_cache, run_and_get_triton_code
  from torch.testing._internal.common_distributed import MultiProcessTestCase, requires_nccl, skip_if_lt_x_gpu
  from torch.testing._internal.common_utils import run_tests
  from torch.utils._triton import has_triton
  import sys
label_desc: Use image node_id 21 for calling the C10DFunctionalNativeTest obj's underlying member method code with example usage: obj.test_inductor_reduce_scatter_tensor_coalesced() and returns: rs0