Update seg_predictor.cpp

inference/predictor/seg_predictor.cpp

@@ -43,6 +43,8 @@ namespace PaddleSolution {
                 auto param_file = utils::path_join(model_dir, params_filename);
                 config.SetModel(prog_file, param_file);
                 config.SwitchUseFeedFetchOps(false);
+                config.SwitchSpecifyInputNames(true);
+                config.EnableMemoryOptim();
                 _main_predictor = paddle::CreatePaddlePredictor(config);
             }
             else {