2016-11-19 61 views
0

我有兩個函數,core_ensembling和sampling.core集合返回值。我需要並行化採樣函數內的core_ensebling函數,即我需要並行計算set1,set2,set3 ... set6。所有這些計算都是獨立的。那麼,是否可以並行這個節目呢?我。怎麼可以這樣做?我使用Windows 10,其中有2個核心和Python的英特爾i3處理器的2.7如何並行化在Python中返回值的函數?

def core_ensembling(args): 
    #some code# 
    return ensemble_set 

def sampling(p,q): 
    total_frames=q 
    ensemble_row=6 
    ensemble_col=8 
    frame_ensemble=[] 
    ensemble_set=[] 

    args1=[8,0,80,total_frames,p] 
    args2=[16,80,160,total_frames,p] 
    args3=[24,160,240,total_frames,p] 
    args4=[32,240,320,total_frames,p] 
    args5=[40,320,400,total_frames,p] 
    args6=[48,400,480,total_frames,p] 

    # parallising part 

    set1=core_ensembling(args1) 
    set2=core_ensembling(args2) 
    set3=core_ensembling(args3) 
    set4=core_ensembling(args4) 
    set5=core_ensembling(args5) 
    set6=core_ensembling(args6) 
    ensemble = list(itertools.chain(set1,set2,set3,set4,set5,set6)) 
    return ensemble 

回答

0
import multiprocessing 
pool = multiprocessing.Pool() 
set1 = pool.apply_async(core_ensembling, args1) 
# ... 
set6 = pool.apply_async(core_ensembling, args6) 
ensemble = list(itertools.chain(set1.get(),set2.get(),set3.get(),set4.get(),set5.get(),set6.get())) 
+0

謝謝你,但有誤差** RuntimeError : 嘗試在當前進程 完成其引導階段之前嘗試啓動新進程。** – user6745741

+1

@ user6745741:請參閱http:// stackover flow.com/a/18205006/4323 –

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