I love python and use it for many of my prototyping needs but if you really need that extra juice from your extra processors you are probably using the wrong language for the problem.
From my experience average increase in speed gained from porting to C/C++ (even without using multi processors) is about x60-x100.
From my experience average increase in speed gained from porting to C/C++ (even without using multi processors) is about x60-x100.