Re: [Numpy-discussion] The NumPy Mandelbrot code 16x slower than Fortran

On Sun, Jan 22, 2012 at 3:13 AM, Sebastian Haase <seb.haase@gmail.com> wrote:

How does the algorithm and timing compare to this one:

http://code.google.com/p/priithon/source/browse/Priithon/mandel.py?spec=svna6117f5e81ec00abcfb037f0f9da2937bb2ea47f&r=a6117f5e81ec00abcfb037f0f9da2937bb2ea47f

The author of original version is  Dan Goodman # FAST FRACTALS WITH PYTHON AND NUMPY

Thanks Sebastian. This one is much faster ---- 2.7s on my laptop with the same dimensions/iterations. It uses a better datastructures -- it only keeps track of points that still need to be iterated --- very clever. If I have time, I'll try to provide an equivalent Fortran version too, for comparison. Ondrej