Method prepend_model

src/utils/summary.cpp:434–437

}

std::string lbann_summary::prepend_model(const std::string tag, int model) const
{
  return "model" + std::to_string(model) + "/" + tag;
}

void lbann_summary::gather_scalar_summary(const std::vector<pending_op>& ops,
                                          std::vector<float>& scalars)