[Numpy-discussion] could anyone check on a 32bit system?

Yaroslav Halchenko lists at onerussian.com
Wed May 1 16:33:27 EDT 2013


On Wed, 01 May 2013, Matthew Brett wrote:

> > There really is no point discussing here, this has to do with numpy
> > doing iteration order optimization, and you actually *want* this. Lets
> > for a second assume that the old behavior was better, then the next guy
> > is going to ask: "Why is np.add.reduce(array, axis=0) so much slower
> > then reduce(array, np.add)?". This is huge speed improvement by Marks
> > new iterator for reductions over the slow axes, so instead of trying to
> > track "regressions" down, I think the right thing is to say kudos for
> > doing this improvement :).

> I don't believe Yarick meant his bisection to be a criticism, but as
> an aid to full understanding.

Exactly right, Matthew -- thank you!  And kudos to Mark!

N.B. I am generally furry and kind, not fuzzy and evil

-- 
Yaroslav O. Halchenko, Ph.D.
http://neuro.debian.net http://www.pymvpa.org http://www.fail2ban.org
Senior Research Associate,     Psychological and Brain Sciences Dept.
Dartmouth College, 419 Moore Hall, Hinman Box 6207, Hanover, NH 03755
Phone: +1 (603) 646-9834                       Fax: +1 (603) 646-1419
WWW:   http://www.linkedin.com/in/yarik        



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