iPython cluster startup ipcluster vs ipcontroller/ipengine

ipcluster_ipcontroller.err

2015-10-21 16:17:22.983 [IPControllerApp] Using existing profile dir: u'/root/.ipython/profile_sge'
/opt/conda/lib/python2.7/site-packages/ipyparallel/controller/hub.py:261: UserWarning: get_default_value is deprecated: use the .default_value attribute
  scheme = TaskScheduler.scheme_name.get_default_value()
/opt/conda/lib/python2.7/site-packages/ipyparallel/apps/ipcontrollerapp.py:406: UserWarning: get_default_value is deprecated: use the .default_value attribute
  scheme = TaskScheduler.scheme_name.get_default_value()
2015-10-21 16:17:23.261 [scheduler] Scheduler started [leastload]

ipcluster_ipengine.err

2015-10-21 16:17:22.924 [IPEngineApp] Using existing profile dir: u'/root/.ipython/profile_sge'
2015-10-21 16:17:22.927 [IPEngineApp] Loading url_file u'/root/.ipython/profile_sge/security/ipcontroller-engine.json'
2015-10-21 16:17:22.943 [IPEngineApp] Registering with controller at tcp://172.17.20.0:49482
2015-10-21 16:18:22.995 [IPEngineApp] CRITICAL | Registration timed out after 60.0 seconds

qsub_ipcontroller.err

/opt/conda/lib/python2.7/site-packages/ipyparallel/controller/hub.py:261: UserWarning: get_default_value is deprecated: use the .default_value attribute
  scheme = TaskScheduler.scheme_name.get_default_value()
2015-10-21 16:33:22.505 [IPControllerApp] Hub listening on tcp://*:37502 for registration.
2015-10-21 16:33:22.506 [IPControllerApp] Hub using DB backend: 'SQLiteDB'
2015-10-21 16:33:22.765 [IPControllerApp] hub::created hub
2015-10-21 16:33:22.765 [IPControllerApp] writing connection info to /root/.ipython/profile_sge/security/ipcontroller-client.json
2015-10-21 16:33:22.765 [IPControllerApp] writing connection info to /root/.ipython/profile_sge/security/ipcontroller-engine.json
/opt/conda/lib/python2.7/site-packages/ipyparallel/apps/ipcontrollerapp.py:406: UserWarning: get_default_value is deprecated: use the .default_value attribute
  scheme = TaskScheduler.scheme_name.get_default_value()
2015-10-21 16:33:22.766 [IPControllerApp] task::using Python leastload Task scheduler
2015-10-21 16:33:22.766 [IPControllerApp] Heartmonitor started
2015-10-21 16:33:22.771 [IPControllerApp] Creating pid file: /root/.ipython/profile_sge/pid/ipcontroller.pid
2015-10-21 16:33:22.778 [scheduler] Scheduler started [leastload]
2015-10-21 16:33:22.781 [IPControllerApp] client::client '\x00\xd0\x8f{\xc2' requested u'connection_request'
2015-10-21 16:33:22.781 [IPControllerApp] client::client ['\x00\xd0\x8f{\xc2'] connected
2015-10-21 16:33:22.839 [IPControllerApp] client::client '\x00\xd0\x8f{\xc3' requested u'connection_request'
2015-10-21 16:33:22.839 [IPControllerApp] client::client ['\x00\xd0\x8f{\xc3'] connected
2015-10-21 16:37:22.454 [IPControllerApp] client::client 'cbb756fc-1b2f-42cb-a03d-44766d7184dd' requested u'registration_request'
2015-10-21 16:37:25.770 [IPControllerApp] registration::finished registering engine 0:cbb756fc-1b2f-42cb-a03d-44766d7184dd
2015-10-21 16:37:25.770 [IPControllerApp] engine::Engine Connected: 0
2015-10-21 16:37:26.073 [IPControllerApp] queue::client '\x00\xbeah\xf9' submitted request u'aec8956e-70ad-4c80-aa69-61fb6afd6428' to 0
2015-10-21 16:37:26.112 [IPControllerApp] queue::request u'aec8956e-70ad-4c80-aa69-61fb6afd6428' completed on 0

qsub_ipengine.err

2015-10-21 16:37:22.447 [IPEngineApp] Loading url_file u'/root/.ipython/profile_sge/security/ipcontroller-engine.json'
2015-10-21 16:37:22.453 [IPEngineApp] Registering with controller at tcp://127.0.0.1:37502
2015-10-21 16:37:22.495 [IPEngineApp] Starting to monitor the heartbeat signal from the hub every 3010 ms.
2015-10-21 16:37:22.498 [IPEngineApp] Completed registration with id 0