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Public Member Functions | Public Attributes | Private Member Functions | List of all members
GaudiMP.Parallel.WorkManager Class Reference
Inheritance diagram for GaudiMP.Parallel.WorkManager:
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Collaboration diagram for GaudiMP.Parallel.WorkManager:
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## Public Member Functions
def | __init__ (self, ncpus='autodetect', ppservers=None)
def | __del__ (self)
def | process (self, task, items, timeout=90000)

## Public Attributes
| ncpus
| ppservers
| sessions
| server
| mode
| pool
| stats

## Private Member Functions
def | _printStatistics (self)
def | _mergeStatistics (self, stat)

## Detailed Description

    Class to in charge of managing the tasks and distributing them to
        the workers. They can be local (using other cores) or remote
        using other nodes in the local cluster

Definition at line 101 of file Parallel.py.

## Constructor & Destructor Documentation

def GaudiMP.Parallel.WorkManager.__init__ | ( |  | self,
|  |  | ncpus = `'autodetect'`,
|  |  | ppservers = `None`
| ) |  |

Definition at line 106 of file Parallel.py.

106 def __init__( self, ncpus='autodetect', ppservers=None) :
107 if ncpus == 'autodetect' : self.ncpus = multiprocessing.cpu_count()
108 else : self.ncpus = ncpus
109 if ppservers :
110 import pp
111 self.ppservers = ppservers
112 self.sessions = [ SshSession(srv) for srv in ppservers ]
113 self.server = pp.Server(ncpus=self.ncpus, ppservers=self.ppservers)
114 self.mode = 'cluster'
115 else :
116 self.pool = multiprocessing.Pool(self.ncpus)
117 self.mode = 'multicore'
118 self.stats = {}
119
GaudiMP.Parallel.WorkManager.__init__
def __init__(self, ncpus='autodetect', ppservers=None)
Definition: Parallel.py:106
GaudiMP.Parallel.WorkManager.ncpus
ncpus
Definition: Parallel.py:107
GaudiMP.Parallel.WorkManager.mode
mode
Definition: Parallel.py:114
GaudiMP.Parallel.WorkManager.stats
stats
Definition: Parallel.py:118
GaudiMP.Parallel.WorkManager.server
server
Definition: Parallel.py:113
GaudiMP.Parallel.WorkManager.ppservers
ppservers
Definition: Parallel.py:111
GaudiMP.Parallel.WorkManager.pool
pool
Definition: Parallel.py:116
GaudiMP.Parallel.SshSession
Definition: Parallel.py:164
GaudiMP.Parallel.WorkManager.sessions
sessions
Definition: Parallel.py:112

def GaudiMP.Parallel.WorkManager.__del__ | ( |  | self | ) |

Definition at line 120 of file Parallel.py.

120 def __del__(self):
121 if hasattr(self,'server') : self.server.destroy()
122
GaudiMP.Parallel.WorkManager.__del__
def __del__(self)
Definition: Parallel.py:120

## Member Function Documentation

def GaudiMP.Parallel.WorkManager._mergeStatistics | ( |  | self,
|  |  | stat
| ) |  |
| private

Definition at line 157 of file Parallel.py.

157 def _mergeStatistics(self, stat):
158 if stat.name not in self.stats : self.stats[stat.name] = Statistics()
159 s = self.stats[stat.name]
160 s.time += stat.time
161 s.njob += 1
162
163
GaudiMP.Parallel.WorkManager._mergeStatistics
def _mergeStatistics(self, stat)
Definition: Parallel.py:157
GaudiMP.Parallel.WorkManager.stats
stats
Definition: Parallel.py:118
GaudiMP.Parallel.Statistics
Definition: Parallel.py:38

def GaudiMP.Parallel.WorkManager._printStatistics | ( |  | self | ) |
| private

Definition at line 148 of file Parallel.py.

148 def _printStatistics(self):
149 njobs = 0
150 for stat in self.stats.values():
151 njobs += stat.njob
152 print 'Job execution statistics:'
153 print 'job count | % of all jobs | job time sum | time per job | job server'
154 for name, stat in self.stats.items():
155 print ' %d | %6.2f | %8.3f | %8.3f | %s' % (stat.njob, 100.*stat.njob/njobs, stat.time, stat.time/stat.njob, name)
156
GaudiMP.Parallel.WorkManager._printStatistics
def _printStatistics(self)
Definition: Parallel.py:148

def GaudiMP.Parallel.WorkManager.process | ( |  | self,
|  |  | task,
|  |  | items,
|  |  | timeout = `90000`
| ) |  |

Definition at line 123 of file Parallel.py.

123 def process(self, task, items, timeout=90000):
124 if not isinstance(task,Task) :
125 raise TypeError("task argument needs to be an 'Task' instance")
126 # --- Call the Local initialialization
127 task.initializeLocal()
128 # --- Schedule all the jobs ....
129 if self.mode == 'cluster' :
130 jobs = [self.server.submit(_prefunction, (_ppfunction, task, item), (), ('GaudiMP.Parallel','time')) for item in items]
131 for job in jobs :
132 result, stat = job()
133 task._mergeResults(result)
134 self._mergeStatistics(stat)
135 self._printStatistics()
136 self.server.print_stats()
137 elif self.mode == 'multicore' :
138 start = time.time()
139 jobs = self.pool.map_async(_ppfunction, zip([task for i in items] , items ))
140 for result, stat in jobs.get(timeout) :
141 task._mergeResults(result)
142 self._mergeStatistics(stat)
143 end = time.time()
144 self._printStatistics()
145 print 'Time elapsed since server creation %f' %(end-start)
146 # --- Call the Local Finalize
147 task.finalize()
GaudiMP.Parallel.WorkManager._mergeStatistics
def _mergeStatistics(self, stat)
Definition: Parallel.py:157
GaudiMP.Parallel.WorkManager._printStatistics
def _printStatistics(self)
Definition: Parallel.py:148
GaudiMP.Parallel.WorkManager.mode
mode
Definition: Parallel.py:114
GaudiMP.Parallel.WorkManager.process
def process(self, task, items, timeout=90000)
Definition: Parallel.py:123

## Member Data Documentation

GaudiMP.Parallel.WorkManager.mode

Definition at line 114 of file Parallel.py.

GaudiMP.Parallel.WorkManager.ncpus

Definition at line 107 of file Parallel.py.

GaudiMP.Parallel.WorkManager.pool

Definition at line 116 of file Parallel.py.

GaudiMP.Parallel.WorkManager.ppservers

Definition at line 111 of file Parallel.py.

GaudiMP.Parallel.WorkManager.server

Definition at line 113 of file Parallel.py.

GaudiMP.Parallel.WorkManager.sessions

Definition at line 112 of file Parallel.py.

GaudiMP.Parallel.WorkManager.stats

Definition at line 118 of file Parallel.py.

The documentation for this class was generated from the following file:

- GaudiMP/python/GaudiMP/Parallel.py