title: What does this tensorflow message mean? Any side effect? Was the installation successful?
body: <p>I just installed tensorflow v2.3 on anaconda python. I tried to test out the installation using the python command below;</p>
  <pre><code>$ python -c &quot;import tensorflow as tf; x = [[2.]]; print('tensorflow version', tf.__version__); print('hello, {}'.format(tf.matmul(x, x)))&quot;
  </code></pre>
  <p>I got the following message;</p>
  <pre><code>2020-12-15 07:59:12.411952: I tensorflow/core/platform/cpu_feature_guard.cc:142] This TensorFlow binary is optimized with oneAPI Deep Neural Network Library (oneDNN)to use the following CPU instructions in performance-critical operations:  AVX AVX2
  To enable them in other operations, rebuild TensorFlow with the appropriate compiler flags.
  hello, [[4.]]
  </code></pre>
  <p>From the message, it seems that the installation was installed successfully. But what does <code>This TensorFlow binary is optimized with oneAPI Deep Neural Network Library (oneDNN)to use the following CPU instructions in performance-critical operations:  AVX AVX2</code> mean exactly?</p>
  <p>Am I using a tensorflow version with some limited features? Any side effects?</p>
  <p>I am using Windows 10.</p>