[Pyrex] any ideas to speed this up?

[John Machin]

On 23/02/2006 1:20 PM, Brian Blais wrote:
> Hello,
> 
> I am a bit new to python and pyrex, and was wondering if anyone can help 
> me here.  I am trying to translate some Matlab/mex code to Python, for 
> doing neural simulations.  This application is definitely computing-time 
> limited, and I need to optimize at least one inner loop of the code, or 
> perhaps even rethink the algorithm.  I've coded it into Pyrex, because 
> it seems straightforward and efficient.  In doing so, I have made sure to
> 
> 1) take any python objects, and extract C datatypes from them outside of 
> the main loop, like:
> 
> cdef double eta
> eta=params['eta']
> 
> 2) all of the variables in the loop are C datatypes, either ints or 
> pointers.

No you haven't.
Try cdef int it, i

Also try looking at the C code generated with and without the cdef for 
"i"; the results should be illuminating.

HTH,
John