leezu commented on issue #17468: Add -march=native -mtune=native to config/config.cmake URL: https://github.com/apache/incubator-mxnet/pull/17468#issuecomment-580056128 `cmake -C ../config.cmake` didn't exist previously, in that sense we don't break the default behavior. The config file is a new feature in MXNet 1.7 and we're free to set the defaults (IMO). You are right that there may be people that copy the `config.cmake` file, don't read it and run into this issue when copying `libmxnet.so` to a different computer. We can comment out the lines introduced by this PR by default to decrease the likelihood of running into the issue you describe. Even thene https://github.com/apache/incubator-mxnet/issues/14664 would mean that `libmxnet.so` would stop working on CPU without AVX. Would you recommend to comment out the `-march=native -mtune=native` by default?
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