!13719 modified train.py in network

From: @shuzigood
Reviewed-by: 
Signed-off-by:

model_zoo/official/cv/yolov3_darknet53/train.py

@@ -135,6 +135,14 @@ def network_init(args):
     devid = int(os.getenv('DEVICE_ID', '0'))
     context.set_context(mode=context.GRAPH_MODE, enable_auto_mixed_precision=True,
                         device_target=args.device_target, save_graphs=False, device_id=devid)
+
+    profiler = None
+    if args.need_profiler:
+        from mindspore.profiler import Profiler
+        profiling_dir = os.path.join("profiling",
+                                     datetime.datetime.now().strftime('%Y-%m-%d_time_%H_%M_%S'))
+        profiler = Profiler(output_path=profiling_dir, is_detail=True, is_show_op_path=True)
+
     # init distributed
     if args.is_distributed:
         if args.device_target == "Ascend":
@@ -155,6 +163,7 @@ def network_init(args):
                                     datetime.datetime.now().strftime('%Y-%m-%d_time_%H_%M_%S'))
     args.logger = get_logger(args.outputs_dir, args.rank)
     args.logger.save_args(args)
+    return profiler
 
 
 def parallel_init(args):
@@ -169,10 +178,7 @@ def parallel_init(args):
 def train():
     """Train function."""
     args = parse_args()
-    network_init(args)
-    if args.need_profiler:
-        from mindspore.profiler import Profiler
-        profiler = Profiler(output_path=args.outputs_dir, is_detail=True, is_show_op_path=True)
+    profiler = network_init(args)
 
     loss_meter = AverageMeter('loss')
     parallel_init(args)