update with comments

paddle/fluid/inference/tests/api/analyzer_resnet50_tester.cc

@@ -20,7 +20,7 @@ namespace paddle {
 namespace inference {
 namespace analysis {
 
-void SetConfig(AnalysisConfig *cfg, bool _use_mkldnn = FLAGS__use_mkldnn) {
+void SetConfig(AnalysisConfig *cfg) {
   cfg->param_file = FLAGS_infer_model + "/params";
   cfg->prog_file = FLAGS_infer_model + "/model";
   cfg->use_gpu = false;
@@ -28,7 +28,7 @@ void SetConfig(AnalysisConfig *cfg, bool _use_mkldnn = FLAGS__use_mkldnn) {
   cfg->enable_ir_optim = true;
   cfg->specify_input_name = true;
 #ifdef PADDLE_WITH_MKLDNN
-  cfg->_use_mkldnn = _use_mkldnn;
+  cfg->_use_mkldnn = FLAGS_use_MKLDNN;
 #endif
 }
 
@@ -96,9 +96,11 @@ TEST(Analyzer_resnet50, compare) {
   // since default config._use_mkldnn=true in this case,
   // we should compare analysis_outputs in config._use_mkldnn=false
   // with native_outputs as well.
+  FLAGS_use_MKLDNN = false;
   AnalysisConfig cfg1;
-  SetConfig(&cfg1, false);
+  SetConfig(&cfg1);
   CompareNativeAndAnalysis(cfg1, input_slots_all);
+  FLAGS_use_MKLDNN = true;
 #endif
 }
 

paddle/fluid/inference/tests/api/analyzer_vis_tester.cc

@@ -50,7 +50,7 @@ Record ProcessALine(const std::string &line) {
   return record;
 }
 
-void SetConfig(AnalysisConfig *cfg, bool _use_mkldnn = FLAGS__use_mkldnn) {
+void SetConfig(AnalysisConfig *cfg) {
   cfg->param_file = FLAGS_infer_model + "/__params__";
   cfg->prog_file = FLAGS_infer_model + "/__model__";
   cfg->use_gpu = false;
@@ -60,7 +60,7 @@ void SetConfig(AnalysisConfig *cfg, bool _use_mkldnn = FLAGS__use_mkldnn) {
   // TODO(TJ): fix fusion gru
   cfg->ir_passes.push_back("fc_gru_fuse_pass");
 #ifdef PADDLE_WITH_MKLDNN
-  cfg->_use_mkldnn = _use_mkldnn;
+  cfg->_use_mkldnn = FLAGS_use_MKLDNN;
 #endif
 }
 
@@ -129,9 +129,11 @@ TEST(Analyzer_vis, compare) {
   // since default config._use_mkldnn=true in this case,
   // we should compare analysis_outputs in config._use_mkldnn=false
   // with native_outputs as well.
+  FLAGS_use_MKLDNN = false;
   AnalysisConfig cfg1;
-  SetConfig(&cfg1, false);
+  SetConfig(&cfg1);
   CompareNativeAndAnalysis(cfg1, input_slots_all);
+  FLAGS_use_MKLDNN = true;
 #endif
 }
 

paddle/fluid/inference/tests/api/tester_helper.h

@@ -35,7 +35,7 @@ DEFINE_bool(test_all_data, false, "Test the all dataset in data file.");
 DEFINE_int32(num_threads, 1, "Running the inference program in multi-threads.");
 DEFINE_bool(use_analysis, true,
             "Running the inference program in analysis mode.");
-DEFINE_bool(_use_mkldnn, true,
+DEFINE_bool(use_MKLDNN, true,
             "Running the inference program with mkldnn library.");
 
 namespace paddle {