Please clarify the below doubts

Here we are just mentioning tf config but how come tensor flow knows that config and If all the workers are created then it will start training but how does tf know whether all workers are created

@balaji.ambresh please help

Please open main.py to see the actual content of the file. %%writefile is used to create a file with the specified contents. The worker ip/port are specified under tf_config. You can see the output via json.dumps(tf_config) in an earlier cell.
Specifiy worker machine locations and let tensorflow take care of using the workers for you.

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