On ps0.example.com:
$ python trainer.py
–ps_hosts=ps0.example.com:2222,ps1.example.com:2222
–worker_hosts=worker0.example.com:2222,worker1.example.com:2222
–job_name=ps --task_index=0
On ps1.example.com:
$ python trainer.py
–ps_hosts=ps0.example.com:2222,ps1.example.com:2222
–worker_hosts=worker0.example.com:2222,worker1.example.com:2222
–job_name=ps --task_index=1
On worker0.example.com:
$ python trainer.py
–ps_hosts=ps0.example.com:2222,ps1.example.com:2222
–worker_hosts=worker0.example.com:2222,worker1.example.com:2222
–job_name=worker --task_index=0
On worker1.example.com:
$ python trainer.py
–ps_hosts=ps0.example.com:2222,ps1.example.com:2222
–worker_hosts=worker0.example.com:2222,worker1.example.com:2222
–job_name=worker --task_index=1