multiprocessing mit shared mem not working
Hello , it is not working - only a little test - what is wrong ? # Python -- v3.8 - windows 10 from multiprocessing import Process, Queue, managers import time def with_shared_memory(): with managers.SharedMemoryManager() as smm: sl = smm.ShareableList(range(2000)) # Divide the work among two processes, storing partial results in sl p1 = Process(target=do_work, args=(sl, 0, 1000)) print (p1) p2 = Process(target=do_work, args=(sl, 1000, 2000)) p1.start() p2.start() # A multiprocessing.Pool might be more efficient p1.join() p2.join() # Wait for all work to complete in both processes total_result = sum(sl) # Consolidate the partial results now in sl print (total_result) def do_work(data,von,bis): print (von,bis) for i in range(von,bis): data.append(i) with_shared_memory()
On 2020-03-08 15:41, Joachim Sasse wrote:
it is not working - only a little test - what is wrong ?
Es ist bei Fragen meist sinnvoll, dazu zu sagen, _was_ nicht geht beziehungsweise was man beobachtet. Das kann den Listen-Lesern beim Verständnis des Problems helfen. :-) Viele Grüße Stefan
participants (2)
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Joachim Sasse
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Stefan Schwarzer