code: def test_mp2_gpu4_node1_without_zero(self):
      test_config = {
          "mp": 2,
          "gpus": 4,
          "nodes": 1,
          "bs": 8,
          "steps": 1100,
          "layers": LAYERS,
          "hidden_size": HIDDEN_SIZE,
          "seq_length": 256,
          "heads": ATTN_HEADS,
          "deepspeed": True,
          "zero": False,
          "other_args": "",
          "tag": "ds_without_zero",
          "checkpoint_name": "ckpt_mp4_gpu16_wo_zero",
          "checkpoint_interval": 1000,
          "json": "ds_config_func_bs8_no_zero.json",
      }
      succ = self.run_test(test_config, 0.01)
      self.assertTrue(succ)
  
imports: import unittest
  import subprocess
  import os
  import re
  from .test_common import BaseTestCase
label_desc: Use image node_id 19 for calling the GPT2CheckpointTestCase obj's underlying member method code with example usage: obj.test_mp2_gpu4_node1_without_zero() without return types