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Posted to commits@mxnet.apache.org by GitBox <gi...@apache.org> on 2019/02/12 07:24:02 UTC

[GitHub] eric-haibin-lin opened a new issue #14126: Safe accumulation type for nd.norm

eric-haibin-lin opened a new issue #14126: Safe accumulation type for nd.norm
URL: https://github.com/apache/incubator-mxnet/issues/14126
 
 
   For FP16, reduction operators tend to loss precision if the accumulation data type remains fp16. Instead, the accumulation dtype should be in fp32. i.e. 
   ```
   dtype = fp16 -> acc_type = fp32
   dtype = fp32 -> acc_type = fp64
   dtype = fp64 -> acc_type = fp64
   ```
   We should do it for the norm op. 
   
   Reference impl for softmax: https://github.com/apache/incubator-mxnet/pull/14098

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