Rainweic commented on issue #17164: net.Cast("float16") doesn't work: Check 
failed: (*in_type)[i] == dtype_param (2 vs. 0) : This layer requires uniform 
type. Expected 'float32' v.s. given 'float16' at 'gamma'
URL: 
https://github.com/apache/incubator-mxnet/issues/17164#issuecomment-569779616
 
 
   > This is a known issue with BatchNorm operator not supporting float16. It 
needs some work to support, not currently a bug but not-implemented feature
   > @mxnet-label-bot update [Feature ]
   
   Thank you! But I still doubt about it. BatchNorm doesn't support fp16, how 
can I train my model with fp16?

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