update hrnet.py

dygraph/models/hrnet.py

@@ -22,8 +22,10 @@ from paddle.fluid.dygraph.nn import Conv2D, Pool2D, Linear
 from paddle.fluid.initializer import Normal
 try:
     from paddle.fluid.dygraph import SyncBatchNorm as BatchNorm
+    print('using sync batch norm')
 except:
     from paddle.fluid.dygraph import BatchNorm
+    print('using batch norm')
 
 __all__ = [
     "HRNet_W18_Small_V1", "HRNet_W18_Small_V2", "HRNet_W18", "HRNet_W30",