[SciPy-user] io.read_array slow
ckkart at hoc.net
Fri Sep 16 06:11:46 CDT 2005
Travis Oliphant wrote:
> Christian Kristukat wrote:
>> I noticed that io.read_array is really slow compared to a python
>> while/readline/split loop (about 5 times slower). I believe to
>> remember that at some time it was written in C but when I looked at
>> the source of scipy 0.3.2 it seems to be pure python. Is there a
>> evident reason why it must be that slow or are there maybe plans to
>> rewrite it in C?
> It's slower because it does more, than that simple loop. The old
> complexity-speed trade off. No doubt there are optimizations that can
> be done. If you find any, please let us know...
I try to do so if I find the time. But where did the old C-code go? Or do I
> Notice that the new scipy core ndarray object has a builtin (simple)
> ascii file reader for each type. This will be very fast for simple
> cases, but still is not perfect.
Does 'the new scipy_core' mean it should be in the current svn version? I didn't
find an ndarray there.
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