====== Python: parallel processing ======

  * https://pythonhosted.org/joblib/
  * https://medium.com/@bfortuner/python-multithreading-vs-multiprocessing-73072ce5600b

AWS lambda
  * http://pywren.io/

====== Multiprocessing ======

자식 프로세스 다 죽이기

<code python>
def killtree(pid, including_parent=True):
    parent = psutil.Process(pid)
    for child in parent.children(recursive=True):
        print "child", child
        child.kill()

    if including_parent:
        parent.kill()

## get the pid of this program
pid=os.getpid()

## when you want to kill everything, including this program
killtree(pid)
</code>

  * https://www.reddit.com/r/learnpython/comments/7vwyez/how_to_kill_child_processes_when_using/