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python - multiprocessing

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Andrea Perlato answered on September 14, 2020 Popularity 10/10 Helpfulness 4/10

answer python - multiprocessing

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python - multiprocessing

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import time
from multiprocessing import Process

# My functions (threads)
def my_func_1():...
def my_func_2():...

# Single calculation  
start = time.time()
my_func_1()
my_func_2()
print(f'Single thread total time: {time.time() - start}')

# Processes
process = Process(target=my_func_1)
process2 = Process(target=my_func_2)
process.start()
process2.start()

start = time.time() # Start the two processes

process.join()      # Wait till processes finish
process2.join()

print(f'Two thread total time: {time.time() - start}')

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Source: docs.python.org

Tags: multiprocessing python

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Contributed on Sep 14 2020

Andrea Perlato

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# cheatsheet:
https://stackoverflow.com/a/59663852/11964524

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Source: Grepper

Tags: multiprocessing

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Contributed on Mar 30 2023

Combative Crocodile

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Multiprocessing in Python

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import multiprocessing
  
# empty list with global scope
result = []
  
def square_list(mylist):
    """
    function to square a given list
    """
    global result
    # append squares of mylist to global list result
    for num in mylist:
        result.append(num * num)
    # print global list result
    print("Result(in process p1): {}".format(result))
  
if __name__ == "__main__":
    # input list
    mylist = [1,2,3,4]
  
    # creating new process
    p1 = multiprocessing.Process(target=square_list, args=(mylist,))
    # starting process
    p1.start()
    # wait until process is finished
    p1.join()
  
    # print global result list
    print("Result(in main program): {}".format(result))

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Source: www.geeksforgeeks.org

Tags: multiprocessing

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Contributed on Nov 10 2022

DarkDevilor

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