On Sunday 11 January 2004 8:33 pm, Stephen Clowater wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > For a PIII with 256K of chace, your best bet is > > CFLAGS=-march=pentiumIII -O3 -pipe -mfpmath=sse -ffast-math -mmmx -msse > - -m3dnow -fgcse-lm -funroll-all-loops -maccumulate-outgoing-args > - -minline-all-stringops
> Richard Leonard wrote: > | On Friday 09 January 2004 12:11 pm, Spider wrote: > |>CFLAGS="-march=athlon -O2 -fomit-frame-pointer -pipe" > |> > |>(-march implies -mcpu, so stating cpu would be redundant) > |>i wouldn't suggest -O3 for this system as you are low on CPU cache, > |>which means that you'd be far better off with the smaller, tighter, > |>binaries of -O2 . > | > | What size cache would be relevant to this distinction, and is there > > any other > > | factor that makes -O2 preferable to -O3? I have a 600MHz PIII > > (Coppermine) > > | with 256kB cache, and am using CFLAGS="-march=pentium3 -O3 -pipe > | -fomit-frame-pointer". Would I be better off with -O2? > | > | Thanks for any information. > | Regards > | Richard > | Thanks to all for their replies, I'm very grateful. As usual... Regards Richard -- [EMAIL PROTECTED] mailing list
