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

Yaroslav Halchenko lists at onerussian.com
Wed May 1 16:37:07 EDT 2013


On Wed, 01 May 2013, Sebastian Berg 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...

btw -- is there something like panda's vbench for numpy?  i.e. where
it would be possible to track/visualize such performance
improvements/hits?

-- 
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
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