class_docstr: Runs a graph with sub-graphs that need to run sequentially. Each sub-graph
  takes its inputs from the outputs of the previous sub-graph.
class_docstr_tok: ["Runs","a","graph","with","sub-graphs","that","need","to","run","sequentially",".","Each","sub-graph","takes","its","inputs","from","the","outputs","of","the","previous","sub-graph","."]
code: def __init__(self, *args, **kwargs):
      super(RunnerMultiGPU, self).__init__(*args, **kwargs)
      self.assert_inputs_outputs()
      self.next_vals = [None] * len(self.inputs)
  
imports: from collections import OrderedDict
label_desc: Use image node_id 1 to create a new RunnerMultiGPU object from inherited base classes: Runner with example: obj = RunnerMultiGPU()