[Numpy-discussion] dot() performance depends on data?

Hagen Fürstenau hagen@zhuliguan....
Sat Sep 11 04:58:56 CDT 2010

> Anyway, seems it is indeed a denormal issue, as adding a small (1e-10)
> constant gives same speed for both timings.

With adding 1e-10 or clipping to 0 at 1e-150, I still get a slowdown of
about 30% compared with the random arrays. Any explanation for that?


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