[Numpy-discussion] Unnecessarily bad performance of elementwise operators with Fortran-arrays

David Cournapeau david@ar.media.kyoto-u.ac...
Thu Nov 8 23:10:08 CST 2007


Travis E. Oliphant wrote:
>
> I wasn't talking about the min, mean, and max methods specifically.  
> These are all implemented with the reduce method of a ufunc. 
>   
Ah, my mistake, I wrongly understood only some of them were implemented 
through ufunc. But the ufunc machinery has nothing to do with output 
array output, right ? So is the 5 time speed increase mainly happening 
inside ufunc ?

David


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