can't train and don't give a error

[ZhuXingJune]

when I run train.py through the command 'python run_job.py -n 5 -g 60 -c 12 --simulator_procs 10 --use_sync --name breakout --short', the program will be stuck here
'self.session_result = self.sess.run(self.train_op.op)'

I have checked the cpu use of a node, and it's almost 0. However, I don't get any error info.
Plus, my tensorflow is intel-tensorflow==1.12.0

I don't know where the problem is.