code: def get_cmd(self, environment, active_resources):
      total_process_count = sum(self.resource_pool.values())
  
      mpirun_cmd = [
          "mpirun",
          "-n",
          f"{total_process_count}",
          "-hostfile",
          f"{self.args.hostfile}",
          "--mca",
          "btl",
          "^openib",
          "--mca",
          "btl_tcp_if_include",
          "eth0",
      ] + split(self.args.launcher_args)
  
      export_cmd = []
      for k, v in self.exports.items():
          export_cmd += ["-x", "{}={}".format(k, v)]
  
      python_exec = []
      if not self.args.no_python:
          python_exec = [sys.executable, "-u"]
          if self.args.module:
              python_exec.append("-m")
  
      return (
          mpirun_cmd
          + export_cmd
          + python_exec
          + [self.user_script]
          + self.user_arguments
      )
  
imports: import os
  import sys
  import shutil
  import subprocess
  import warnings
  from shlex import split
  from abc import ABC, abstractmethod
  from ..utils import logger
  from .constants import PDSH_MAX_FAN_OUT, MVAPICH_TMP_HOSTFILE
label_desc: Use image node_id 5 for calling the OpenMPIRunner obj's underlying member method code with example usage: obj.get_cmd(environment, active_resources) and returns: unknown