title: Optimize and batch byte file data into keras models
body: <p>I'm trying to feed my model.fit with chunked data since my entire dataset doesn't fit my memory.
  TF version is 2.4.</p>
  <p>I've optimized dataset stored in file saving it in byte, each col is 1 byte (0-255) but now I need to read it in chunk and start learning process of my network.</p>
  <p>Before this I was using .csv, loading dataset with numpy reshape and then give entire dataset to keras model.</p>
  <p>Should I use<code>.fit</code> for each chunk I load with <code>load_weight</code> from previus iteration?</p>