leezu commented on issue #17047: Add build flag for x86 arch
URL: https://github.com/apache/incubator-mxnet/pull/17047#issuecomment-564830820
 
 
   > Yes, there is no need to set -msse3 explicitly if -march has a more 
advanced arch. But I keep -msse3 here as a gate keeper since we won't want to 
support lower end machines. @larroy
   
   Why do we need such gate keeper? How about defaulting to `march=native 
-mtune=native`?

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