On Fri, Dec 12, 2008 at 3:55 AM, david alis <[email protected]> wrote: > Does anyone have experience of comparing the performance between a PC > with a quad core versus one with a dual core? > Namely, what are the circumstances when I would really notice the difference.
J only uses one core, unless you run multiple instances of J. However, if you want to be using your system while you run a virus scan and with anything else going on (like, maybe, running microsoft's current OS -- which should perhaps be assumed if you needed to be running virus scans) then two cores might not be enough. Anyways, here are one, two and three simultaneous J sessions running your expression on a quad core system (64 bit, so memory use is higher -- also on vista while running a virus scan): 7!:2 'foo 1500' 13.344 310384384 7!:2 'foo 1500' 14.188 310384384 7!:2 'foo 1500' 15.839 310384384 -- Raul ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
