fix mv3 batch size (#597)

configs/MobileNetV3/MobileNetV3_large_x1_0.yaml

@@ -17,7 +17,7 @@ image_shape: [3, 224, 224]
 LEARNING_RATE:
     function: 'Cosine'
     params:
-        lr: 2.6
+        lr: 1.3
         warmup_epoch: 5
 
 OPTIMIZER:
@@ -29,7 +29,7 @@ OPTIMIZER:
         factor: 0.00002
 
 TRAIN:
-    batch_size: 4096
+    batch_size: 2048
     num_workers: 4
     file_list: "./dataset/ILSVRC2012/train_list.txt"
     data_dir: "./dataset/ILSVRC2012/"