Re: c compilation - gcc vs visual c

kumarchi@[EMAIL PROTECTED]
 wrote:
) thanx all of you for responding. I was totally unprepared for such a
) vast performance difference (2x msvc vs gcc) and my code is not at all
) special(no UI, complicated cl***** etc). it simply does lots of
) floating point array(mainly through fft)  and normal integer
) operations
)
) I used -O3 flag and in my case so far it seems to be better than O2.
) msvc by default uses their own O2.

Have you tried gcc's -march=native setting, along with possibly
-msse2 and/or -mfpmath=sse, or some other i386-specific settings ?

Normally, gcc will compile a binary so that it will run on any i386,
not only the current machine.

) I cannot believe such a blatant difference will go unnoticed for long
)
) in our type of situation the intel compiler is not an option.
) primarily because we have a standaradized dll  plug in architecture
) and so (if windoz do msvc) applies.

SaSW, Willem
-- 
Disclaimer: I am in no way responsible for any of the statements
            made in the above text. For all I know I might be
            drugged or something..
            No I'm not paranoid. You all think I'm paranoid, don't you !
#EOT