Why python multiprocessing module cause CPU completely run out?
python
Solution
You aren't protecting the entry point at all, so each subprocess is trying to start the same `map` call and so on (into infinity!). Try the following:
if __name__ == "__main__":
print p.map(f, [1,2,3])
See this section of the module's documentation.
Problem
Possible Duplicate: Multiprocessing launching too many instances of Python VM I am trying python 2.6 multiprocessing module with this simple code snippet. ``` from multiprocessing import Pool p = Pool(5) def f(x): return x*x print p.map(f, [1,2,3]) ``` But this code cause my OS stopped responding. It looks like the CPU is too busy. What's wrong with my code? BTW : it seems that multiprocessing module is a bit dangerous. I had to restart my computer.