Talk About Network

Google


Register and Login
Nick
Password
Register create new account Sign up is FREE and you can post replies, new topics, bookmark posts and more!
Recover lost password


Programming > C > Re: c compilati...
Latest [ Topics | Posts ] Archive Post A New Topic Post a Reply
<< Topic < Post Post 16 of 38 Topic 26117 of 27670
Post > Topic >>

Re: c compilation - gcc vs visual c

by Willem <willem@[EMAIL PROTECTED] > May 10, 2008 at 06:20 AM

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
 




 38 Posts in Topic:
c compilation - gcc vs visual c
kumarchi@[EMAIL PROTECTED  2008-05-09 12:20:19 
Re: c compilation - gcc vs visual c
jacob navia <jacob@[EM  2008-05-09 22:20:09 
Re: c compilation - gcc vs visual c
Ulrich Eckhardt <dooms  2008-05-09 22:32:07 
Re: c compilation - gcc vs visual c
"Chris Thomasson&quo  2008-05-30 16:59:33 
Re: c compilation - gcc vs visual c
micans@[EMAIL PROTECTED]   2008-05-09 13:38:04 
Re: c compilation - gcc vs visual c
kumarchi@[EMAIL PROTECTED  2008-05-09 14:03:14 
Re: c compilation - gcc vs visual c
Ian Collins <ian-news@  2008-05-10 09:22:41 
Re: c compilation - gcc vs visual c
jacob navia <jacob@[EM  2008-05-09 23:50:30 
Re: c compilation - gcc vs visual c
Niz <notarealemailaddr  2008-05-09 23:08:26 
Re: c compilation - gcc vs visual c
"cr88192" <c  2008-05-10 15:28:50 
Re: c compilation - gcc vs visual c
"Sean G. McLaughlin&  2008-05-10 17:30:35 
Re: c compilation - gcc vs visual c
moi <root@[EMAIL PROTE  2008-05-09 23:21:36 
Re: c compilation - gcc vs visual c
Antoninus Twink <nospa  2008-05-10 00:13:19 
Re: c compilation - gcc vs visual c
"cr88192" <c  2008-05-10 08:41:39 
Re: c compilation - gcc vs visual c
kumarchi@[EMAIL PROTECTED  2008-05-09 17:59:22 
Re: c compilation - gcc vs visual c
Willem <willem@[EMAIL   2008-05-10 06:20:09 
Re: c compilation - gcc vs visual c
William Ahern <william  2008-05-10 16:23:36 
Re: c compilation - gcc vs visual c
kumarchi@[EMAIL PROTECTED  2008-05-09 18:16:26 
Re: c compilation - gcc vs visual c
Chris H <chris@[EMAIL   2008-05-10 13:32:58 
Re: c compilation - gcc vs visual c
roberson@[EMAIL PROTECTED  2008-05-10 12:49:26 
Re: c compilation - gcc vs visual c
jacob navia <jacob@[EM  2008-05-10 17:41:23 
Re: c compilation - gcc vs visual c
kumarchi@[EMAIL PROTECTED  2008-05-10 09:49:58 
Re: c compilation - gcc vs visual c
"Sean G. McLaughlin&  2008-05-10 17:29:06 
Re: c compilation - gcc vs visual c
moi <root@[EMAIL PROTE  2008-05-10 19:18:18 
Re: c compilation - gcc vs visual c
Chris H <chris@[EMAIL   2008-05-10 18:58:15 
Re: c compilation - gcc vs visual c
Chris H <chris@[EMAIL   2008-05-10 19:00:47 
Re: c compilation - gcc vs visual c
kumarchi@[EMAIL PROTECTED  2008-05-10 12:13:38 
Re: c compilation - gcc vs visual c
kumarchi@[EMAIL PROTECTED  2008-05-10 12:29:47 
Re: c compilation - gcc vs visual c
Rui Maciel <rui.maciel  2008-05-10 20:20:13 
Re: c compilation - gcc vs visual c
Barry Schwarz <schwarz  2008-05-16 19:12:48 
Re: c compilation - gcc vs visual c
Peter Nilsson <airia@[  2008-05-16 20:17:14 
[OT] Re: c compilation - gcc vs visual c
Tim Prince <tprince@[E  2008-05-16 23:30:55 
Re: c compilation - gcc vs visual c
Walter Banks <walter@[  2008-05-17 05:29:18 
Re: c compilation - gcc vs visual c
CBFalconer <cbfalconer  2008-05-17 06:59:53 
Re: c compilation - gcc vs visual c
Ben Bacarisse <ben.use  2008-05-18 14:00:22 
Re: c compilation - gcc vs visual c
kumarchi@[EMAIL PROTECTED  2008-05-30 09:09:43 
Re: c compilation - gcc vs visual c
Antoninus Twink <nospa  2008-05-30 19:34:08 
Re: c compilation - gcc vs visual c
"robertwessel2@[EMAI  2008-05-30 17:12:30 

Post A Reply:
  Go here to Signup

AddThis Feed Button


About - Advertising - Contact - Frequently Asked Questions - Privacy Policy - Terms of Use - Signup

Contact
tan12V112 Fri Oct 10 22:13:00 CDT 2008.