我正在尝试使用 ipyparallel 训练多个 RandomForest 分类器。我的设计是嵌套的 CV 循环外部 CV，用于消除方差，内部 GridSearchCV 内置 ( n_jobs = -1 ( 为随机森林找到最佳估计器(# 森林，森林中的 #trees(，并使用 ipyparallel 与 sge 训练每个组合(拟合函数((训练森林是最内在的步骤(。
如果我用n_jobs = 1运行GridSearchCV，一切都运行顺利，而且很慢。但是如果我做n_jobs > 1，在外部 CV 循环的第一次迭代(非常快(之后，我会收到 HubConnectionTimeout 错误。
我已经附上了代码。还有错误。
CV 循环：
kf = cross_validation.StratifiedKFold(Y, n_folds=k, shuffle=shuffle)
for train_index, test_index in kf:
X_train, X_test = X[train_index], X[test_index]
Y_train, Y_test = Y[train_index], Y[test_index]
rusCV = GridSearchCV(RUSRandomForestClassifier(n_Forests=100, n_TreesInForest=300), tune_params, cv=20, n_jobs = -1)
# do work
ipyparallel ：(适合RUSRandomForestClassifier( - 由GridSearchCV从上面调用
c = Client(profile='sge', timeout=300)
view = c.direct_view()
forests = view.map_async(__trainForest, dataTupleList)
forests.get()
c.purge_everything()
c.close(linger=True)
错误：
multiprocessing.pool.RemoteTraceback:
"""
Traceback (most recent call last):
File "/home/sulantha/anaconda3/lib/python3.4/site-packages/sklearn/externals/joblib/parallel.py", line 130, in __call__
return self.func(*args, **kwargs)
File "/home/sulantha/anaconda3/lib/python3.4/site-packages/sklearn/externals/joblib/parallel.py", line 72, in __call__
return [func(*args, **kwargs) for func, args, kwargs in self.items]
File "/home/sulantha/anaconda3/lib/python3.4/site-packages/sklearn/externals/joblib/parallel.py", line 72, in <listcomp>
return [func(*args, **kwargs) for func, args, kwargs in self.items]
File "/home/sulantha/anaconda3/lib/python3.4/site-packages/sklearn/cross_validation.py", line 1531, in _fit_and_score
estimator.fit(X_train, y_train, **fit_params)
File "/home/sulantha/PycharmProjects/TwoStepArticle/Python/RUSRandomForest/RUSRandomForestClassifier.py", line 43, in fit
self.trainJungle(X, Y)
File "/home/sulantha/PycharmProjects/TwoStepArticle/Python/RUSRandomForest/RUSRandomForestClassifier.py", line 46, in trainJungle
c = Client(url_file='/home/sulantha/.ipython/profile_sge/security/ipcontroller-client.json', profile='sge', profile_dir='/home/sulantha/.ipython/profile_sge/', timeout=300)
File "/home/sulantha/anaconda3/lib/python3.4/site-packages/ipyparallel/client/client.py", line 478, in __init__
self._connect(sshserver, ssh_kwargs, timeout)
File "/home/sulantha/anaconda3/lib/python3.4/site-packages/ipyparallel/client/client.py", line 598, in _connect
raise error.TimeoutError("Hub connection request timed out")
ipyparallel.error.TimeoutError: Hub connection request timed out
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/home/sulantha/anaconda3/lib/python3.4/multiprocessing/pool.py", line 119, in worker
result = (True, func(*args, **kwds))
File "/home/sulantha/anaconda3/lib/python3.4/site-packages/sklearn/externals/joblib/parallel.py", line 143, in __call__
raise TransportableException(text, e_type)
sklearn.externals.joblib.my_exceptions.TransportableException: TransportableException
___________________________________________________________________________
TimeoutError Mon Feb 15 13:29:45 2016
PID: 30122 Python 3.4.4: /home/sulantha/anaconda3/bin/python
...........................................................................
/home/sulantha/PycharmProjects/TwoStepArticle/Python/RUSRandomForest/RUSRandomForestClassifier.py in fit(self=RUSRandomForestClassifier(n_Forests=10, n_TreesInForest=50), X=array([[ 66.14246575, 2. , 1. ...1.63758022,
1.44694768, 1.36380531]]), Y=array([1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,...0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0,
0, 0]))
38 return finalRUSX, finalRUSY
39
40
41
42 def fit(self, X, Y):
---> 43 self.trainJungle(X, Y)
self.trainJungle = <bound method RUSRandomForestClassifier.trainJun...restClassifier(n_Forests=10, n_TreesInForest=50)>
X = array([[ 66.14246575, 2. , 1. ...1.63758022,
1.44694768, 1.36380531]])
Y = array([1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,...0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0,
0, 0])
44
45 def trainJungle(self, X, Y):
46 c = Client(url_file='/home/sulantha/.ipython/profile_sge/security/ipcontroller-client.json', profile='sge', profile_dir='/home/sulantha/.ipython/profile_sge/', timeout=300)
47 view = c.direct_view()
...........................................................................
/home/sulantha/PycharmProjects/TwoStepArticle/Python/RUSRandomForest/RUSRandomForestClassifier.py in trainJungle(self=RUSRandomForestClassifier(n_Forests=10, n_TreesInForest=50), X=array([[ 66.14246575, 2. , 1. ...1.63758022,
1.44694768, 1.36380531]]), Y=array([1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,...0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0,
0, 0]))
41
42 def fit(self, X, Y):
43 self.trainJungle(X, Y)
44
45 def trainJungle(self, X, Y):
---> 46 c = Client(url_file='/home/sulantha/.ipython/profile_sge/security/ipcontroller-client.json', profile='sge', profile_dir='/home/sulantha/.ipython/profile_sge/', timeout=300)
c = undefined
47 view = c.direct_view()
48 def __trainForest(xyTuple):
49 (X, Y) = xyTuple
50 rf = RandomForestClassifier(n_estimators=self.n_TreesInForest, verbose=0, class_weight='auto')
...........................................................................
/home/sulantha/anaconda3/lib/python3.4/site-packages/ipyparallel/client/client.py in __init__(self=<ipyparallel.client.client.Client object>, url_file='/home/sulantha/.ipython/profile_sge/security/ipcontroller-client.json', profile='sge', profile_dir='/home/sulantha/.ipython/profile_sge/', ipython_dir=None, context=<zmq.sugar.context.Context object>, debug=False, sshserver='', sshkey=None, password=None, paramiko=None, timeout=300, cluster_id=None, **extra_args={'key': b'3bf859ee-882a-4929-882a-be1edaa9e0c9', 'packer': 'json', 'signature_scheme': 'hmac-sha256', 'unpacker': 'json'})
473 }
474 self._queue_handlers = {'execute_reply' : self._handle_execute_reply,
475 'apply_reply' : self._handle_apply_reply}
476
477 try:
--> 478 self._connect(sshserver, ssh_kwargs, timeout)
self._connect = <bound method Client._connect of <ipyparallel.client.client.Client object>>
sshserver = ''
ssh_kwargs = {'keyfile': None, 'paramiko': None, 'password': None}
timeout = 300
479 except:
480 self.close(linger=0)
481 raise
482
...........................................................................
/home/sulantha/anaconda3/lib/python3.4/site-packages/ipyparallel/client/client.py in _connect(self=<ipyparallel.client.client.Client object>, sshserver='', ssh_kwargs={'keyfile': None, 'paramiko': None, 'password': None}, timeout=300)
593 poller = zmq.Poller()
594 poller.register(self._query_socket, zmq.POLLIN)
595 # poll expects milliseconds, timeout is seconds
596 evts = poller.poll(timeout*1000)
597 if not evts:
--> 598 raise error.TimeoutError("Hub connection request timed out")
599 idents,msg = self.session.recv(self._query_socket,mode=0)
600 if self.debug:
601 pprint(msg)
602 content = msg['content']
TimeoutError: Hub connection request timed out
___________________________________________________________________________
"""
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "/home/sulantha/anaconda3/lib/python3.4/site-packages/sklearn/externals/joblib/parallel.py", line 731, in retrieve
self._output.extend(job.get())
File "/home/sulantha/anaconda3/lib/python3.4/multiprocessing/pool.py", line 608, in get
raise self._value
sklearn.externals.joblib.my_exceptions.TransportableException: TransportableException
___________________________________________________________________________
TimeoutError Mon Feb 15 13:29:45 2016
PID: 30122 Python 3.4.4: /home/sulantha/anaconda3/bin/python
...........................................................................
/home/sulantha/anaconda3/lib/python3.4/site-packages/sklearn/externals/joblib/parallel.py in __call__(self=<sklearn.externals.joblib.parallel.BatchedCalls object>)
67 def __init__(self, iterator_slice):
68 self.items = list(iterator_slice)
69 self._size = len(self.items)
70
71 def __call__(self):
---> 72 return [func(*args, **kwargs) for func, args, kwargs in self.items]
self.items = [(<function _fit_and_score>, (RUSRandomForestClassifier(n_Forests=10, n_TreesInForest=50), array([[ 82.15616438, 1. , 0. ...1.63758022,
1.44694768, 1.36380531]]), array([0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0,...0, 0, 0,
0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0]), <function _passthrough_scorer>, array([ 9, 10, 11, 12, 13, 14, 15, 16, ..., 164,
165, 166, 167, 168, 169, 170, 171]), array([0, 1, 2, 3, 4, 5, 6, 7, 8]), 0, {'n_Forests': 10, 'n_TreesInForest': 50}, {}), {'error_score': 'raise', 'return_parameters': True})]
73
74 def __len__(self):
75 return self._size
76
...........................................................................
/home/sulantha/anaconda3/lib/python3.4/site-packages/sklearn/externals/joblib/parallel.py in <listcomp>(.0=<list_iterator object>)
67 def __init__(self, iterator_slice):
68 self.items = list(iterator_slice)
69 self._size = len(self.items)
70
71 def __call__(self):
---> 72 return [func(*args, **kwargs) for func, args, kwargs in self.items]
func = <function _fit_and_score>
args = (RUSRandomForestClassifier(n_Forests=10, n_TreesInForest=50), array([[ 82.15616438, 1. , 0. ...1.63758022,
1.44694768, 1.36380531]]), array([0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0,...0, 0, 0,
0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0]), <function _passthrough_scorer>, array([ 9, 10, 11, 12, 13, 14, 15, 16, ..., 164,
165, 166, 167, 168, 169, 170, 171]), array([0, 1, 2, 3, 4, 5, 6, 7, 8]), 0, {'n_Forests': 10, 'n_TreesInForest': 50}, {})
kwargs = {'error_score': 'raise', 'return_parameters': True}
73
74 def __len__(self):
75 return self._size
76
...........................................................................
/home/sulantha/anaconda3/lib/python3.4/site-packages/sklearn/cross_validation.py in _fit_and_score(estimator=RUSRandomForestClassifier(n_Forests=10, n_TreesInForest=50), X=array([[ 82.15616438, 1. , 0. ...1.63758022,
1.44694768, 1.36380531]]), y=array([0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0,...0, 0, 0,
0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0]), scorer=<function _passthrough_scorer>, train=array([ 9, 10, 11, 12, 13, 14, 15, 16, ..., 164,
165, 166, 167, 168, 169, 170, 171]), test=array([0, 1, 2, 3, 4, 5, 6, 7, 8]), verbose=0, parameters={'n_Forests': 10, 'n_TreesInForest': 50}, fit_params={}, return_train_score=False, return_parameters=True, error_score='raise')
1526
1527 try:
1528 if y_train is None:
1529 estimator.fit(X_train, **fit_params)
1530 else:
-> 1531 estimator.fit(X_train, y_train, **fit_params)
estimator.fit = <bound method RUSRandomForestClassifier.fit of R...restClassifier(n_Forests=10, n_TreesInForest=50)>
X_train = array([[ 66.14246575, 2. , 1. ...1.63758022,
1.44694768, 1.36380531]])
y_train = array([1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,...0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0,
0, 0])
fit_params = {}
1532
1533 except Exception as e:
1534 if error_score == 'raise':
1535 raise
...........................................................................
/home/sulantha/PycharmProjects/TwoStepArticle/Python/RUSRandomForest/RUSRandomForestClassifier.py in fit(self=RUSRandomForestClassifier(n_Forests=10, n_TreesInForest=50), X=array([[ 66.14246575, 2. , 1. ...1.63758022,
1.44694768, 1.36380531]]), Y=array([1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,...0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0,
0, 0]))
38 return finalRUSX, finalRUSY
39
40
41
42 def fit(self, X, Y):
---> 43 self.trainJungle(X, Y)
self.trainJungle = <bound method RUSRandomForestClassifier.trainJun...restClassifier(n_Forests=10, n_TreesInForest=50)>
X = array([[ 66.14246575, 2. , 1. ...1.63758022,
1.44694768, 1.36380531]])
Y = array([1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,...0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0,
0, 0])
44
45 def trainJungle(self, X, Y):
46 c = Client(url_file='/home/sulantha/.ipython/profile_sge/security/ipcontroller-client.json', profile='sge', profile_dir='/home/sulantha/.ipython/profile_sge/', timeout=300)
47 view = c.direct_view()
...........................................................................
/home/sulantha/PycharmProjects/TwoStepArticle/Python/RUSRandomForest/RUSRandomForestClassifier.py in trainJungle(self=RUSRandomForestClassifier(n_Forests=10, n_TreesInForest=50), X=array([[ 66.14246575, 2. , 1. ...1.63758022,
1.44694768, 1.36380531]]), Y=array([1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,...0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0,
0, 0]))
41
42 def fit(self, X, Y):
43 self.trainJungle(X, Y)
44
45 def trainJungle(self, X, Y):
---> 46 c = Client(url_file='/home/sulantha/.ipython/profile_sge/security/ipcontroller-client.json', profile='sge', profile_dir='/home/sulantha/.ipython/profile_sge/', timeout=300)
c = undefined
47 view = c.direct_view()
48 def __trainForest(xyTuple):
49 (X, Y) = xyTuple
50 rf = RandomForestClassifier(n_estimators=self.n_TreesInForest, verbose=0, class_weight='auto')
...........................................................................
/home/sulantha/anaconda3/lib/python3.4/site-packages/ipyparallel/client/client.py in __init__(self=<ipyparallel.client.client.Client object>, url_file='/home/sulantha/.ipython/profile_sge/security/ipcontroller-client.json', profile='sge', profile_dir='/home/sulantha/.ipython/profile_sge/', ipython_dir=None, context=<zmq.sugar.context.Context object>, debug=False, sshserver='', sshkey=None, password=None, paramiko=None, timeout=300, cluster_id=None, **extra_args={'key': b'3bf859ee-882a-4929-882a-be1edaa9e0c9', 'packer': 'json', 'signature_scheme': 'hmac-sha256', 'unpacker': 'json'})
473 }
474 self._queue_handlers = {'execute_reply' : self._handle_execute_reply,
475 'apply_reply' : self._handle_apply_reply}
476
477 try:
--> 478 self._connect(sshserver, ssh_kwargs, timeout)
self._connect = <bound method Client._connect of <ipyparallel.client.client.Client object>>
sshserver = ''
ssh_kwargs = {'keyfile': None, 'paramiko': None, 'password': None}
timeout = 300
479 except:
480 self.close(linger=0)
481 raise
482
...........................................................................
/home/sulantha/anaconda3/lib/python3.4/site-packages/ipyparallel/client/client.py in _connect(self=<ipyparallel.client.client.Client object>, sshserver='', ssh_kwargs={'keyfile': None, 'paramiko': None, 'password': None}, timeout=300)
593 poller = zmq.Poller()
594 poller.register(self._query_socket, zmq.POLLIN)
595 # poll expects milliseconds, timeout is seconds
596 evts = poller.poll(timeout*1000)
597 if not evts:
--> 598 raise error.TimeoutError("Hub connection request timed out")
599 idents,msg = self.session.recv(self._query_socket,mode=0)
600 if self.debug:
601 pprint(msg)
602 content = msg['content']
TimeoutError: Hub connection request timed out
___________________________________________________________________________
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/home/sulantha/PycharmProjects/TwoStepArticle/Python/RUSRandomForest/runClassificationHAI2016.py", line 191, in <module>
main()
File "/home/sulantha/PycharmProjects/TwoStepArticle/Python/RUSRandomForest/runClassificationHAI2016.py", line 163, in main
result = doRUSRFC(itemList[0])
File "/home/sulantha/PycharmProjects/TwoStepArticle/Python/RUSRandomForest/runClassificationHAI2016.py", line 77, in doRUSRFC
shuffle=True, print_v=True, k=10, tune_params=tune_params, ext_x_test=analysisDict['X_test'])
File "/home/sulantha/PycharmProjects/TwoStepArticle/Python/RUSRandomForest/runClassificationHAI2016.py", line 44, in CVJungle
rusCV.fit(X_train, Y_train)
File "/home/sulantha/anaconda3/lib/python3.4/site-packages/sklearn/grid_search.py", line 804, in fit
return self._fit(X, y, ParameterGrid(self.param_grid))
File "/home/sulantha/anaconda3/lib/python3.4/site-packages/sklearn/grid_search.py", line 553, in _fit
for parameters in parameter_iterable
File "/home/sulantha/anaconda3/lib/python3.4/site-packages/sklearn/externals/joblib/parallel.py", line 812, in __call__
self.retrieve()
File "/home/sulantha/anaconda3/lib/python3.4/site-packages/sklearn/externals/joblib/parallel.py", line 762, in retrieve
raise exception
sklearn.externals.joblib.my_exceptions.JoblibTimeoutError: JoblibTimeoutError
___________________________________________________________________________
---------------------------------------------------------------------------
Sub-process traceback:
---------------------------------------------------------------------------
TimeoutError Mon Feb 15 13:29:45 2016
PID: 30122 Python 3.4.4: /home/sulantha/anaconda3/bin/python
...........................................................................
/home/sulantha/anaconda3/lib/python3.4/site-packages/sklearn/externals/joblib/parallel.py in __call__(self=<sklearn.externals.joblib.parallel.BatchedCalls object>)
67 def __init__(self, iterator_slice):
68 self.items = list(iterator_slice)
69 self._size = len(self.items)
70
71 def __call__(self):
---> 72 return [func(*args, **kwargs) for func, args, kwargs in self.items]
self.items = [(<function _fit_and_score>, (RUSRandomForestClassifier(n_Forests=10, n_TreesInForest=50), array([[ 82.15616438, 1. , 0. ...1.63758022,
1.44694768, 1.36380531]]), array([0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0,...0, 0, 0,
0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0]), <function _passthrough_scorer>, array([ 9, 10, 11, 12, 13, 14, 15, 16, ..., 164,
165, 166, 167, 168, 169, 170, 171]), array([0, 1, 2, 3, 4, 5, 6, 7, 8]), 0, {'n_Forests': 10, 'n_TreesInForest': 50}, {}), {'error_score': 'raise', 'return_parameters': True})]
73
74 def __len__(self):
75 return self._size
76
...........................................................................
/home/sulantha/anaconda3/lib/python3.4/site-packages/sklearn/externals/joblib/parallel.py in <listcomp>(.0=<list_iterator object>)
67 def __init__(self, iterator_slice):
68 self.items = list(iterator_slice)
69 self._size = len(self.items)
70
71 def __call__(self):
---> 72 return [func(*args, **kwargs) for func, args, kwargs in self.items]
func = <function _fit_and_score>
args = (RUSRandomForestClassifier(n_Forests=10, n_TreesInForest=50), array([[ 82.15616438, 1. , 0. ...1.63758022,
1.44694768, 1.36380531]]), array([0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0,...0, 0, 0,
0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0]), <function _passthrough_scorer>, array([ 9, 10, 11, 12, 13, 14, 15, 16, ..., 164,
165, 166, 167, 168, 169, 170, 171]), array([0, 1, 2, 3, 4, 5, 6, 7, 8]), 0, {'n_Forests': 10, 'n_TreesInForest': 50}, {})
kwargs = {'error_score': 'raise', 'return_parameters': True}
73
74 def __len__(self):
75 return self._size
76
...........................................................................
/home/sulantha/anaconda3/lib/python3.4/site-packages/sklearn/cross_validation.py in _fit_and_score(estimator=RUSRandomForestClassifier(n_Forests=10, n_TreesInForest=50), X=array([[ 82.15616438, 1. , 0. ...1.63758022,
1.44694768, 1.36380531]]), y=array([0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0,...0, 0, 0,
0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0]), scorer=<function _passthrough_scorer>, train=array([ 9, 10, 11, 12, 13, 14, 15, 16, ..., 164,
165, 166, 167, 168, 169, 170, 171]), test=array([0, 1, 2, 3, 4, 5, 6, 7, 8]), verbose=0, parameters={'n_Forests': 10, 'n_TreesInForest': 50}, fit_params={}, return_train_score=False, return_parameters=True, error_score='raise')
1526
1527 try:
1528 if y_train is None:
1529 estimator.fit(X_train, **fit_params)
1530 else:
-> 1531 estimator.fit(X_train, y_train, **fit_params)
estimator.fit = <bound method RUSRandomForestClassifier.fit of R...restClassifier(n_Forests=10, n_TreesInForest=50)>
X_train = array([[ 66.14246575, 2. , 1. ...1.63758022,
1.44694768, 1.36380531]])
y_train = array([1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,...0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0,
0, 0])
fit_params = {}
1532
1533 except Exception as e:
1534 if error_score == 'raise':
1535 raise
...........................................................................
/home/sulantha/PycharmProjects/TwoStepArticle/Python/RUSRandomForest/RUSRandomForestClassifier.py in fit(self=RUSRandomForestClassifier(n_Forests=10, n_TreesInForest=50), X=array([[ 66.14246575, 2. , 1. ...1.63758022,
1.44694768, 1.36380531]]), Y=array([1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,...0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0,
0, 0]))
38 return finalRUSX, finalRUSY
39
40
41
42 def fit(self, X, Y):
---> 43 self.trainJungle(X, Y)
self.trainJungle = <bound method RUSRandomForestClassifier.trainJun...restClassifier(n_Forests=10, n_TreesInForest=50)>
X = array([[ 66.14246575, 2. , 1. ...1.63758022,
1.44694768, 1.36380531]])
Y = array([1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,...0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0,
0, 0])
44
45 def trainJungle(self, X, Y):
46 c = Client(url_file='/home/sulantha/.ipython/profile_sge/security/ipcontroller-client.json', profile='sge', profile_dir='/home/sulantha/.ipython/profile_sge/', timeout=300)
47 view = c.direct_view()
...........................................................................
/home/sulantha/anaconda3/lib/python3.4/site-packages/ipyparallel/client/client.py in __init__(self=<ipyparallel.client.client.Client object>, url_file='/home/sulantha/.ipython/profile_sge/security/ipcontroller-client.json', profile='sge', profile_dir='/home/sulantha/.ipython/profile_sge/', ipython_dir=None, context=<zmq.sugar.context.Context object>, debug=False, sshserver='', sshkey=None, password=None, paramiko=None, timeout=300, cluster_id=None, **extra_args={'key': b'3bf859ee-882a-4929-882a-be1edaa9e0c9', 'packer': 'json', 'signature_scheme': 'hmac-sha256', 'unpacker': 'json'})
473 }
474 self._queue_handlers = {'execute_reply' : self._handle_execute_reply,
475 'apply_reply' : self._handle_apply_reply}
476
477 try:
--> 478 self._connect(sshserver, ssh_kwargs, timeout)
self._connect = <bound method Client._connect of <ipyparallel.client.client.Client object>>
sshserver = ''
ssh_kwargs = {'keyfile': None, 'paramiko': None, 'password': None}
timeout = 300
479 except:
480 self.close(linger=0)
481 raise
482
...........................................................................
/home/sulantha/anaconda3/lib/python3.4/site-packages/ipyparallel/client/client.py in _connect(self=<ipyparallel.client.client.Client object>, sshserver='', ssh_kwargs={'keyfile': None, 'paramiko': None, 'password': None}, timeout=300)
593 poller = zmq.Poller()
594 poller.register(self._query_socket, zmq.POLLIN)
595 # poll expects milliseconds, timeout is seconds
596 evts = poller.poll(timeout*1000)
597 if not evts:
--> 598 raise error.TimeoutError("Hub connection request timed out")
599 idents,msg = self.session.recv(self._query_socket,mode=0)
600 if self.debug:
601 pprint(msg)
602 content = msg['content']
TimeoutError: Hub connection request timed out
___________________________________________________________________________
scikit-learn教程指出
警告：不能嵌套具有并行计算的对象(
n_jobs不同于 1(。
因此，似乎所有并行化都必须在外循环中进行。