Longer execution: 1.0096 Shorter: 0.969624 (first one) using: ijconsole; j 801, iirc OS: Deban/Testing w/ kernel Linux 3.13-1-686-pae Processor: Intel Atom N270 @1.6 GHz
2014-07-05 7:59 GMT+02:00 Roger Hui <[email protected]>: > 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
