3,07 GHz Intel Core i7 950
x=: 1e6 $ ' '
y=: a. {~ ? 1e6 $ 256
%/ 100 (6!:2)&> '/:~x' ; '/:~y'
1.7674852
R.E. Boss
(Add your info to http://www.jsoftware.com/jwiki/Community/Demographics )
> -----Original Message-----
> From: [email protected] [mailto:programming-
> [email protected]] On Behalf Of Roger Hui
> Sent: zaterdag 5 juli 2014 7:59
> 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
