[C++-sig] Trouble optimizing Boost.python integration

[Hans Meine]

On Tuesday 25 August 2009 23:48:02 Dan Sanduleac wrote:
> The thing is, it proves to be kind of slow compared to Cython/Pyrex code
> that does the same. I think it should run faster than Cython code.

I think this is because your vectors are too small.  I think for such small 
objects, the implementation of vector operations is much faster than the 
overhead of BPL's argument/return type conversion, and the latter accounts for 
the slowdown.

HTH,
  Hans