[Numpy-discussion] Question about Optimization (Inline, and Pyrex)

[David Cournapeau]

Anne Archibald wrote:
>
>  And the scope of improvement would be very limited; an
> expression like A*B+C*D would be much more efficient, probably, if the
> whole expression were evaluated at once for each element (due to
> memory locality and temporary allocation). But it is impossible for
> numpy, sitting inside python as it does, to do that.
>   
My understanding is that alternative implementations of python such as 
pypy makes this kind of things possible (at least in theory). I asked a 
question about this a few months ago:

http://www.mail-archive.com/pypy-dev@codespeak.net/msg02243.html

David