remove param --use_boxing_v2

Classification/cnns/config.py

@@ -50,14 +50,6 @@ def get_parser(parser=None):
         const=True,
         help='Whether to use use fp16'
     )
-    parser.add_argument(
-        '--use_boxing_v2',
-        type=str2bool,
-        nargs='?',
-        const=True,
-        help='Whether to use boxing v2'
-    )
-
     parser.add_argument(
         '--channel_last',
         type=str2bool,

Classification/cnns/of_cnn_train_val.py

@@ -34,10 +34,6 @@ model_dict = {
 flow.config.gpu_device_num(args.gpu_num_per_node)
 flow.config.enable_debug_mode(True)
 
-if args.use_boxing_v2:
-    flow.config.collective_boxing.nccl_fusion_threshold_mb(8)
-    flow.config.collective_boxing.nccl_fusion_all_reduce_use_buffer(False)
-
 
 def label_smoothing(labels, classes, eta, dtype):
     assert classes > 0