The vart.RunnerExt Class example is show
below.
// create runner
runner = vart.RunnerExt.create_runner(subgraph, “run”)
// get input and output tensor buffers
input_tensor_buffers = runner.get_inputs()
output_tensor_buffers = runner.get_outputs()
// run graph runner
v = runner.execute_async(input_tensor_buffers, output_tensor_buffers)
runner.wait(v)
output_data = np.asarray(output_tensor_buffers[0])