code: def test_scatter_tuple():
      ab = (torch.zeros(2, 1), torch.zeros(4, 2))
  
      a, b = scatter(ab, chunks=2)
  
      assert a.tensors[0].size() == (1, 1)
      assert b.tensors[0].size() == (1, 1)
      assert a.tensors[1].size() == (2, 2)
      assert b.tensors[1].size() == (2, 2)
  
file_path: fairscale/tests/nn/pipe/test_microbatch.py
imports: import pytest
  import torch
  import torch.cuda
  from fairscale.nn.pipe.microbatch import Batch, check, gather, scatter
label_desc: Use image node_id 10 for calling a global function with example usage: test_scatter_tuple() without return types