http://stackoverflow.com/questions/10489134/multithreaded-calls-to-the-objective-function-of-scipy-optimize-leastsq
https://medium.com/p/40e9b2b36148
https://pypi.python.org/pypi/joblib#downloads
http://timothyawiseman.wordpress.com/2012/12/21/a-really-simple-multiprocessing-python-example/
http://pymotw.com/2/multiprocessing/basics.html
http://plotpy.sourceforge.net/apidoc/_modules/plotpy/fitdata.html