diff --git a/dygraph/mobilenet/train.py b/dygraph/mobilenet/train.py
index fbf5d54beac044f76228076eb5d6f13e70e252af..16e27dc4fbc22675e2446dbc5ff146e1b6b5b909 100644
--- a/dygraph/mobilenet/train.py
+++ b/dygraph/mobilenet/train.py
@@ -128,6 +128,7 @@ def train_mobilenet():
         test_data_loader.set_sample_list_generator(test_reader, place)
 
         # 4. train loop
+        total_batch_num = 0  #this is for benchmark
         for eop in range(args.num_epochs):
             if num_trainers > 1:
                 imagenet_reader.set_shuffle_seed(eop + (
@@ -142,6 +143,8 @@ def train_mobilenet():
             # 4.1 for each batch, call net() , backward(), and minimize()
             for img, label in train_data_loader():
                 t1 = time.time()
+                if args.max_iter and total_batch_num == args.max_iter:
+                    return
                 label = to_variable(label.numpy().astype('int64').reshape(
                     int(args.batch_size // place_num), 1))
                 t_start = time.time()
@@ -185,6 +188,10 @@ def train_mobilenet():
                 total_sample += 1
                 batch_id += 1
                 t_last = time.time()
+               
+                # NOTE: used for benchmark
+                total_batch_num = total_batch_num + 1
+
             if args.ce:
                 print("kpis\ttrain_acc1\t%0.3f" % (total_acc1 / total_sample))
                 print("kpis\ttrain_acc5\t%0.3f" % (total_acc5 / total_sample))
diff --git a/dygraph/mobilenet/utils/utility.py b/dygraph/mobilenet/utils/utility.py
index 53678ebb72010c44e70a43b0b084ad54a72e6ca1..a7bc9c883edba2e6115d3fe96a61e569b5d7407a 100644
--- a/dygraph/mobilenet/utils/utility.py
+++ b/dygraph/mobilenet/utils/utility.py
@@ -117,6 +117,10 @@ def parse_args():
     add_arg('drop_connect_rate',        float,  0.2,                    "The value of drop connect rate")
     parser.add_argument('--step_epochs', nargs='+', type=int, default=[30, 60, 90], help="piecewise decay step")
 
+    # NOTE: used for benchmark
+    add_arg('max_iter',                 int,    0,                      "The number of total train max_iters.")
+
+
     # READER AND PREPROCESS
     add_arg('lower_scale',              float,  0.08,                   "The value of lower_scale in ramdom_crop")
     add_arg('lower_ratio',              float,  3./4.,                  "The value of lower_ratio in ramdom_crop")