add cpp example inception to nightly test (#13534)

* add inception test

* fix max iter for mlp

* rename and add comment

* rename epoch num

Author: roywei

cpp-package/example/mlp.cpp

@@ -144,13 +144,13 @@ void MLP() {
                                grad_req_type, aux_states);
 
   std::cout << "Training" << std::endl;
-  int max_iters = 20000;
+  int max_epoch = 15000;
   mx_float learning_rate = 0.0001;
-  for (int iter = 0; iter < max_iters; ++iter) {
+  for (int epoch_num = 0; epoch_num < max_epoch; ++epoch_num) {
     exe->Forward(true);
-
-    if (iter % 100 == 0) {
-      std::cout << "epoch " << iter << std::endl;
+    // print accuracy every 100 epoch
+    if (epoch_num % 100 == 0) {
+      std::cout << "epoch " << epoch_num << std::endl;
       std::vector<NDArray>& out = exe->outputs;
       float* cptr = new float[128 * 10];
       out[0].SyncCopyToCPU(cptr, 128 * 10);

cpp-package/tests/ci_test.sh

@@ -36,6 +36,9 @@ cp ../../build/cpp-package/example/lenet_with_mxdataiter .
 cp ../../build/cpp-package/example/resnet .
 ./resnet 5
 
+cp ../../build/cpp-package/example/inception_bn .
+./inception_bn 5
+
 cp ../../build/cpp-package/example/mlp .
 ./mlp