Macbook Air, 1.8 GHz Intel Core i5 Engine: j701/2011-01-10/11:25 build: Feb 6 2011 16:16:29 Platform: Darwin 64
- low: 1.95644 - high: 2.02227 - mean: 2.00139 On Sat, Jul 5, 2014 at 11:14 AM, Linda Alvord <[email protected]> wrote: > HP Paviilion du9700 Notebook PC > AMD Turion(tm) 64 X2 Mobile Technoloby TL-60 > Memory: 2.00 GB > > x=: 1e6 $ ' ' > y=: a. {~ ? 1e6 $ 256 > %/ 100 (6!:2)&> '/:~x' ; '/:~y' > 1.01786 > > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Roger Hui > Sent: Saturday, July 05, 2014 1:59 AM > To: Programming forum > Subject: [Jprogramming] sort times > > I have observed a puzzling timing result which may be CPU dependent. > Please try the following and tell me what ratio you get, and the kind of > machine you ran it on. Thanks. > > On my machine, an XPS L521X Intel Core i7-3632QM @ 2.2 GHz, > > x=: 1e6 $ ' ' > y=: a. {~ ? 1e6 $ 256 > %/ 100 (6!:2)&> '/:~x' ; '/:~y' > 2.44133 > > Basically, sorting a constant vector of 1-byte ints takes 2.4 times as long > as sorting a random vector of 1-byte ints. > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
