Use four CPUs to run a python script

Question

I'm running a python script that does some operations over a large graph, so I would like to take advantage of the 4 cores of my PC. Watching the task manager I can see that all CPUs are running but the total CPU usage is up to 50%. As I set this PC exclusively to run this script I would like to use its CPUs as much as possible. Is there a python module or anything that can be set in my OS (windows 7) in order to allow me to do that?

you will want to read up on the multiprocessing module doughellmann.com/PyMOTW/multiprocessing/basics.html — Tom Willis
– Tom Willis, Commented Jul 11, 2011 at 2:06

Nick Bastin · Accepted Answer · 2011-07-11 02:05:25Z

7

C Python has a rather generous lock that precludes most threaded operations from truly happening in parallel. You might want to look at the Multiprocessing module.

Otherwise, you could use a Python implementation that allows for concurrent threading:

answered Jul 11, 2011 at 2:05

Nick Bastin

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Fergus Barker · Accepted Answer · 2011-07-11 02:05:07Z

1

Have a read through this module:

http://docs.python.org/library/threading.html

for very good work and a more simple example:

http://www.devshed.com/c/a/Python/Basic-Threading-in-Python/

Hope these help!

answered Jul 11, 2011 at 2:05

Fergus Barker

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