code: def test_mp2_gpu4_node1_zero1(self):
      test_config = {
          "mp": 2,
          "gpus": 4,
          "nodes": 1,
          "bs": 8,
          "steps": 1000,
          "layers": LAYERS,
          "hidden_size": HIDDEN_SIZE,
          "seq_length": SEQ_LEN,
          "heads": ATTN_HEADS,
          "deepspeed": False,
          "json": "ds_config_func_bs8_zero1.json",
      }
  
      succ = self.run_test(test_config, 0.01)
      self.assertTrue(succ)
  
imports: import unittest
  import os
  import re
  from .test_common import BaseTestCase
label_desc: Use image node_id 7 for calling the GPT2FuncTestCase obj's underlying member method code with example usage: obj.test_mp2_gpu4_node1_zero1() without return types