[Numpy-discussion] Re: Numeric life as I see it
oliphant at ee.byu.edu
Thu Feb 10 11:22:30 EST 2005
Chris Barker wrote:
> Travis Oliphant wrote:
>> I personally don't see Numeric3 as in any kind of "need for speed"
>> camp either.
> Now I'm confused. As an interested observer, It seems to me that there
> is only one thing that is keeping users of Numeric from switching to
> "Performance with many small arrays"
That was the showstopper, but it was just a symptom of the Python-C
mixture that I would never feel comfortable using as the foundation for
the basic arrayobject. There are also lots of little concerns over the
burgeoning C-API that would make maintainence more difficult. To me it
is ironic that people have called Numeric "hackish". In my view (and
believe me I mean no disrespect, I know these are challenging problems)
in comparison to the mix of Python and C code in numarray, Numeric looks
quite elegant. Numarray has some nice code in it, don't get me wrong,
it's just the overall architecture and it's choice of C-API I have
> Another nit: "speed" in not one goal. I understand that one of the
> goals of numarray was top performance for very large arrays. In fact,
> it's ironic that someone discovered that it was a safety check in
> Numeric that was causing it to be slower than Numarray with large arrays.
That was known for a long time, which is why scipy disabled the safety
check. I think numarray has a better idea for dealing with checks. One
that can easily be borrowed in Numeric3.
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