Comments on: First look at Cython http://www.mblondel.org/journal/2009/11/27/first-look-at-cython/ Machine Learning, Data Mining, Natural Language Processing… Mon, 02 Jan 2012 10:53:06 +0000 hourly 1 http://wordpress.org/?v=3.0.4 By: Ian http://www.mblondel.org/journal/2009/11/27/first-look-at-cython/#comment-195960 Ian Mon, 30 Nov 2009 17:09:58 +0000 http://www.mblondel.org/journal/?p=119#comment-195960 That's interesting. I tried Cython for a homework assignment where I was looping over and doing simple operations on a couple of arrays of 100,000 elements. Using just python and numpy it was horribly slow, taking about 5 seconds to compute. I tried doing the C style syntax in the python with Cython and got about a 2x speedup when I statically typed my arrays and loop variables, and turned off boundary checking. That was still way too slow since this was part of an iterative method. I simply rewrote the loop in C++ and it computed instantaneously, but I never got around to wrapping the loop and bringing it back to python. I think I'm going to finish the attempt after some free time. That’s interesting. I tried Cython for a homework assignment where I was looping over and doing simple operations on a couple of arrays of 100,000 elements. Using just python and numpy it was horribly slow, taking about 5 seconds to compute.

I tried doing the C style syntax in the python with Cython and got about a 2x speedup when I statically typed my arrays and loop variables, and turned off boundary checking. That was still way too slow since this was part of an iterative method.

I simply rewrote the loop in C++ and it computed instantaneously, but I never got around to wrapping the loop and bringing it back to python. I think I’m going to finish the attempt after some free time.

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