ProcessPoolExector test

gistfile1.txt

import concurrent.futures
import math
import time

PRIMES = [
    112272535095293,
    112272535095293,
    112582705942171,
    112272535095293,
    115280095190773,
    115797848077099,
    112582705942171,
    112272535095293,
    115280095190773,
    115797848077099,
    1099726899285419]

def is_prime(n):
    if n % 2 == 0:
        return False

    sqrt_n = int(math.floor(math.sqrt(n)))
    for i in range(3, sqrt_n + 1, 2):
        if n % i == 0:
            return False
    return True

def main():
    t1 = time.time()
    with concurrent.futures.ProcessPoolExecutor(max_workers=1) as executor:
        for number, prime in zip(PRIMES, executor.map(is_prime, PRIMES)):
            print('%d is prime: %s' % (number, prime))

    t2 = time.time()
    print "1 worker"
    print t2-t1

    t1 = time.time()
    with concurrent.futures.ProcessPoolExecutor(max_workers=2) as executor:
        for number, prime in zip(PRIMES, executor.map(is_prime, PRIMES)):
            print('%d is prime: %s' % (number, prime))
    t2 = time.time()
    print "2 workers"
    print t2-t1

    t1 = time.time()
    with concurrent.futures.ProcessPoolExecutor(max_workers=3) as executor:
        for number, prime in zip(PRIMES, executor.map(is_prime, PRIMES)):
            print('%d is prime: %s' % (number, prime))
    t2 = time.time()
    print "3 workers"
    print t2-t1

    t1 = time.time()
    with concurrent.futures.ProcessPoolExecutor(max_workers=4) as executor:
        for number, prime in zip(PRIMES, executor.map(is_prime, PRIMES)):
            print('%d is prime: %s' % (number, prime))
    t2 = time.time()
    print "4 workers"
    print t2-t1

    t1 = time.time()
    with concurrent.futures.ProcessPoolExecutor(max_workers=100) as executor:
        for number, prime in zip(PRIMES, executor.map(is_prime, PRIMES)):
            print('%d is prime: %s' % (number, prime))
    t2 = time.time()
    print "100 workers"
    print t2-t1

    t1 = time.time()
    with concurrent.futures.ProcessPoolExecutor() as executor:
        for number, prime in zip(PRIMES, executor.map(is_prime, PRIMES)):
            print('%d is prime: %s' % (number, prime))
    t2 = time.time()
    print "not set  workers"
    print t2-t1

    t1 = time.time()
    for prime in PRIMES:
        print('%d is prime: %s' % (prime, is_prime(prime)))
    t2 = time.time()
    print t2-t1
        

if __name__ == '__main__':
    main()