code: def omp_barrier():
      import omp
      from time import sleep
  
      result1 = 0
      result2 = 0
      # omp parallel num_threads(4)
      if 1:
          use_omp = omp.in_parallel()
          rank = omp.get_thread_num()
          if rank == 1:
              sleep(0.5)
              result2 = 3
          # omp barrier
          if rank == 2:
              result1 = result2
      if use_omp:
          return result1 == 3
      else:
          return result1 == 0
  
label_desc: Use image node_id 1 for calling a global function with example usage: omp_barrier() and returns: unknown, unknown