Keras does not utilize 100% cpu

Question

I build sequential model with keras and tensorflow backend. As you seen on picture, model uses all cores but none of them 100%. I would like to know, how to make keras+tf utilize every core by 100%.

I tried to build tensorflow from scratch and reinstall, but it didn't help.

Answer 1

It turned out, my model was too simple to utilize 100% cpu. After adding more neurons to the network, cpu utilization increased to almost 100%.

I dont know, why keras don't use availible cpu power to compute simple models faster.