1. 问题描述
The TensorFlow library wasn't compiled to use SSE4.2 instructions, but these are available on your machine and could speed up CPU computations.
2. 解决办法
Those are simply warnings. They are just informing you if you build TensorFlow from source it can be faster on your machine. Those instructions are not enabled by default on the builds available I think to be compatible with more CPUs as possible.
import os
os.environ['TF_CPP_MIN_LOG_LEVEL']='2'
import tensorflow as tf
or if you're on a Unix system simply do export TF_CPP_MIN_LOG_LEVEL=2.
TF_CPP_MIN_LOG_LEVEL is a TensorFlow environment variable responsible for the logs,
to silence INFO logs set it to 1,
to filter out WARNING 2 ,
to additionally silence ERROR logs (not recommended) set it to 3