parallel processing in python

module	usage
threading	t1 = threading.Thread(target=print_square, args=(10,)) t1.start() t1.join()
concurrent.futures	pool = concurrent.futures.ThreadPoolExecutor(max_workers=2) pool.submit(worker) pool.shutdown(wait=True)
multiprocessing	p1 = multiprocessing.Process(target=worker1) p1.start() p1.join()
subprocess.Popen	p1 = subprocess.Popen("ls") p1.wait()

from multiprocessing import Process
from threading import Thread
import shutil
import numpy as np
import os
import sys
import subprocess
 
 
chunkN = 16
 
ll_proc = []
for chkIdx in range(chunkN):
    cmd = f"app.exe -F test_{chkIdx:03d}.cfg"
    print(cmd)
    # os.system(cmd)
    ll_proc.append(subprocess.Popen(
            cmd, shell=True
        ))
    print(f"chunk {chkIdx} is started.")
 
for idx, pp in enumerate(ll_proc):
    pp.wait()
    print(f"chunk {idx:4d} is finished.")
print("all finished.")
 
os.system("pause")

 

Multithreading in Python - GeeksforGeeks: https://www.geeksforgeeks.org/multithreading-python-set-1/