[Numpy-discussion] ising model: f2py vs cython comparison
Travis E. Oliphant
Sat Dec 22 19:49:36 CST 2007
Ondrej Certik wrote:
> I need to write 2D Ising model simulation into my school, so I wrote
> it in Python, then rewrote it in Fortran + f2py, and also Cython:
> And Cython solution is 2x faster than f2py. I understand, that I am
> comparing many things - wrappers, my fortran coding skills
> vs Cython C code generation and gcc vs gfortran. But still any ideas
> how to speed up fortran+f2py solution is very welcomed.
My experience with similar kinds of comparisons is that gnu fortran
compilers are not very good, especially on 2-d problems. Try using a
different fortran compiler to see if speeds improve.
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