https://github.com/tensorflow/ngraph-bridge ngraph-bridge-0.22.0-rc4\logging\tf_graph_writer.*
直接用tensorflow\core\util\dump_graph.h的 方法
string DumpGraphToFile(const string& name, Graph const& graph, const FunctionLibraryDefinition* flib_def = nullptr, const string& dirname = "");
grep -v tensor_content tf_graph.pbtxt > tf_graph1.pbtxt
用于缩减模型文件大小
