Better performance on older version of GCC

2010-08-27 Thread Corey Kasten
Hello all, I have two computers with two different versions of GCC. Otherwise the two systems have identical hardware. I have a processor and memory intensive benchmark program which I compile on both systems and I cannot understand why the system with older GCC version compiles faster code. Sys

Re: Better performance on older version of GCC

2010-08-27 Thread Corey Kasten
On Fri, 2010-08-27 at 06:50 -0700, Nathan Froyd wrote: > On Fri, Aug 27, 2010 at 09:44:25AM -0400, Corey Kasten wrote: > > I find that the executable compiled on system A runs faster (on both > > systems) than the executable compiled on system B (on both system), by a &

Re: Better performance on older version of GCC

2010-08-27 Thread Corey Kasten
On Fri, 2010-08-27 at 17:09 +0200, Richard Guenther wrote: > On Fri, Aug 27, 2010 at 5:02 PM, Corey Kasten > wrote: > > On Fri, 2010-08-27 at 06:50 -0700, Nathan Froyd wrote: > >> On Fri, Aug 27, 2010 at 09:44:25AM -0400, Corey Kasten wrote: > >> > I find that th