http://codereview.stackexchange.com/questions/17702/python-numpy-running-15x-slower-than-matlab-am-i-using-numpy-effeciently http://jkwiens.com/heat-equation-using-finite-difference/ http://www.timteatro.net/2010/10/29/performance-python-solving-the-2d-diffusion-equation-with-numpy/