On Sun, Jul 16, 2006 at 08:15:46AM -0400, Dave Jones wrote: > On Sun, Jul 16, 2006 at 02:10:22PM +0200, dragoran wrote: > > I did same benchmarks using flops.c (attached) the results are attached > > to it seems that > > -march=k8 -mtune=k8 -m32 is the fastes but not by much ... Additionally, whilst you found these flags speed things up slightly on AMD systems, it may have a noticable detrimental impact on Intel systems, and shipping multiple sets of binaries for a negligable speedup doesn't make a lot of sense. > > the last one (-m64) is weird (much slower!!) no -OX was used. When run in 32bit, this is doubling the amount of loads/stores used, so little wonder it's slower. Dave -- http://www.codemonkey.org.uk -- fedora-devel-list mailing list fedora-devel-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-devel-list
