What is the optimal time for warm-up ?

[kangskii]

Describe the Issue

As suggested, I warmed up for 10 times, and the prediction time dropped from 8s to 2s. And I changed the warm-up time to 50, however, the prediction time increased from 2 s to 3.68 s.

(1) Do you know the issue ?

(2) What is the meaning of warm up here ? I am confused what the prediction can be decreased by running the session.run() several time.

Steps to Reproduce

Hardware/Software Info

Please provide the following information about your Raspberry Pi setup:

• Raspberry Pi model: 3
• Operating System used: Raspbian
• Version of Python used: 2.7
• SD card memory size: 32G
• Size of USB/other device used as swap (if building from source):
• TensorFlow git commit hash (if building from source):

Relevant Console Output/Logs