Change int8v2 CAPI unit test name and add log in the prediction stage (#18200)

* fix issue 18111;test=develop

* fix timer;test=develop

* refine code;test=develop

paddle/fluid/inference/tests/api/analyzer_int8_image_classification_tester.cc

@@ -138,7 +138,7 @@ void SetInput(std::vector<std::vector<PaddleTensor>> *inputs,
   }
 }
 
-TEST(Analyzer_int8_resnet50, quantization) {
+TEST(Analyzer_int8_image_classification, quantization) {
   AnalysisConfig cfg;
   SetConfig(&cfg);
 

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

@@ -336,14 +336,20 @@ void PredictionRun(PaddlePredictor *predictor,
 #ifdef WITH_GPERFTOOLS
   ProfilerStart("paddle_inference.prof");
 #endif
+  int predicted_num = 0;
   if (!FLAGS_zero_copy) {
-    run_timer.tic();
     for (int i = 0; i < iterations; i++) {
+      run_timer.tic();
       for (int j = 0; j < num_times; j++) {
         predictor->Run(inputs[i], &(*outputs)[i], FLAGS_batch_size);
       }
+      elapsed_time += run_timer.toc();
+
+      predicted_num += FLAGS_batch_size;
+      if (predicted_num % 100 == 0) {
+        LOG(INFO) << predicted_num << " samples";
+      }
     }
-    elapsed_time = run_timer.toc();
   } else {
     for (int i = 0; i < iterations; i++) {
       ConvertPaddleTensorToZeroCopyTensor(predictor, inputs[i]);
@@ -352,8 +358,14 @@ void PredictionRun(PaddlePredictor *predictor,
         predictor->ZeroCopyRun();
       }
       elapsed_time += run_timer.toc();
+
+      predicted_num += FLAGS_batch_size;
+      if (predicted_num % 100 == 0) {
+        LOG(INFO) << predicted_num << " samples";
       }
     }
+  }
+
 #ifdef WITH_GPERFTOOLS
   ProfilerStop();
 #endif