[Numpy-discussion] Numpy performance vs Matlab.
Matthieu Brucher
matthieu.brucher@gmail....
Wed Jan 7 09:53:36 CST 2009
> for i in range(dim):
> for j in range(dim):
> a[i,j,0] = a[i,j,1]
> a[i,j,2] = a[i,j,0]
> a[i,j,1] = a[i,j,2]
> for i = 1:dim
> for j = 1:dim
> a(i,j,1) = a(i,j,2);
> a(i,j,2) = a(i,j,1);
> a(i,j,3) = a(i,j,3);
> end
> end
Hi,
The two loops are not the same.
As David stated, with JIT, the loops may be vectorized by Matlab on the fly.
--
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