Multiprocessing causes BSOD

[delta_frost]

I have this simple first multiprocessing code in pyton,but I encounter a BSOD when running it.Can anyone please point out what is wrong with it ?

import multiprocessing
def cracker():
    print "Hello"
    return

procs = []
for i in range(8):
    p = multiprocessing.Process(target = cracker)
    procs.append(p)
    p.start()

for p in procs:
    p.join()

[Gribouillis]

Upgrade to linux !

[delta_frost]

Not a viable option :P
I actually meant to do some sort of benchmarking by finding out primes in parallel by dividing the task by ranges between the 8 cores on my i7.But running the above code simply freezes the system,not to mention various BSODs at times.

[TrustyTony]

Your main code is not protected for importing, which multiprocessing module uses, this works:

import multiprocessing
def cracker():
    print "Hello"
    return

if __name__ == '__main__':
    procs = []
    for i in range(8):
        p = multiprocessing.Process(target = cracker)
        procs.append(p)
        p.start()

    for p in procs:
        p.join()

[delta_frost]

Thanks pyTony.The code runs without freezing up the system but does not produce any output

http://s16.postimage.org/txd52wyyd/err.png

Do I have to import the module and use it in the IDLE to get that to work ?

[TrustyTony]

You need to run it properly from command line double click etc. IDLE does not work.

[delta_frost]

Oh!! Thanks a lot.That saved a lot of time.