mifan0208 commented on issue #19485:
URL: 
https://github.com/apache/incubator-mxnet/issues/19485#issuecomment-723452962


   @leezu I just changed the base network resnet152 or res101 which is as 
backbone in ssd.from second to fourth ,change 
   The original conv:
   nn.Conv2D(channels=out_channel,kernel_size=3,strides=stride,padding=1,
                           use_bias=False,in_channels=in_channel)
   
   changed conv:
   
gluon.contrib.cnn.ModulatedDeformableConvolution(channels=out_channel,kernel_size=3,strides=stride,
                                                                    
padding=1,use_bias=False,in_channels=in_channel)
   
   when I use DCNv2,until the time is larger than timeout,the dataloader will 
not work,,but when I use origin Conv,it will work normally.
   


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