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discomfitor l33t
Joined: 21 Feb 2003 Posts: 927 Location: None
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Posted: Sat Nov 13, 2010 11:33 am Post subject: |
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oh wow this thread is old _________________ There is no substitute for experience.
Imperfection indicates a lack of effort. |
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skellr l33t
Joined: 18 Jun 2005 Posts: 975 Location: The Village, Portmeirion
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Posted: Sat Nov 13, 2010 1:25 pm Post subject: |
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You know your box is fast when it doesn't have time to break. |
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Marctraider Guru
Joined: 24 Dec 2003 Posts: 387
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Posted: Wed Nov 24, 2010 5:15 pm Post subject: |
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lol indeed very old.
I must laugh about this ricer shit and all, however. I must add to the 'hdparm' section that I actually had some speed optimization from a certain parameter which was probably disabled in the BIOS on my old Toshiba (Pentium) laptop which I couldn't change there. It sped up my harddrive by almost half the speed. Since the IDE controller only worked in Programmed Input/Output (PIO) mode i needed all speed i could get. (were it to be 30-40% at least).
I had to enable the 32-bit transfer mode. This seemly wasnt enabled by default at that time by kernel.
My write/read speed went from 3~MB/s to like 6MB/s.
But it was not the processor which was holding me down. It was primarily the harddisk/harddisk space and memory usage which I had to 'optimize'. (-Os for the win!) lol
Now thats some speed increase dont you think? hehe.
But seriously, at a time i could consider myself a beginning ricer. But I stopped with it as soon as I got a faster computer. LOL. _________________ MOBO: Maximus II Gene
RAM: DDR2 OCZ 4GB
CPU: E6400 Conroe
GPU: HD2600XT
SATA: 3x 250GB. |
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Yamakuzure Advocate
Joined: 21 Jun 2006 Posts: 2280 Location: Adendorf, Germany
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Posted: Thu Nov 25, 2010 10:49 am Post subject: |
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I bet the "ricing" discussion will have a very noisy "comeback" when GCC-4.5 is marked stable and people realize what Graphite can do. _________________ Important German:- "Aha" - German reaction to pretend that you are really interested while giving no f*ck.
- "Tja" - German reaction to the apocalypse, nuclear war, an alien invasion or no bread in the house.
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Ormaaj Guru
Joined: 28 Jan 2008 Posts: 319
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Posted: Mon Nov 29, 2010 7:30 am Post subject: |
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Yamakuzure wrote: | I bet the "ricing" discussion will have a very noisy "comeback" when GCC-4.5 is marked stable and people realize what Graphite can do. | Graphite has been around since 4.4 and you still have to explicitly enable the flags as of 4.5 AFAICT.
This box:
CFLAGS="-march=native -O3 -mmmx -floop-interchange -floop-strip-mine -floop-block -pipe"
Makes it look ricey. |
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Yamakuzure Advocate
Joined: 21 Jun 2006 Posts: 2280 Location: Adendorf, Germany
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Posted: Thu Dec 09, 2010 3:07 pm Post subject: |
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Of course. But I was merely thinking of: Code: | CFLAGS="-march=core2 -O2 -pipe -mmmx -msse -msse2 -msse3 -mssse3 -mcx16 -msahf -mtune=core2 -mfpmath=sse -ftree-vectorize -mno-push-args -floop-interchange -fgraphite-identity -ftree-loop-distribution -floop-parallelize-all -floop-strip-mine -floop-block -ftree-parallelize-loops=5"
CXXFLAGS="${CFLAGS}" | _________________ Important German:- "Aha" - German reaction to pretend that you are really interested while giving no f*ck.
- "Tja" - German reaction to the apocalypse, nuclear war, an alien invasion or no bread in the house.
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ciro64 Guru
Joined: 20 Jun 2009 Posts: 424
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Posted: Fri Dec 11, 2015 3:21 am Post subject: |
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Mah ... with "-march=native -Ofast -ftree-vectorize -pipe" i got errors compiling kdelibs, chromium , webkit-gtk ....
And printing from firefox or chrmium give to me a black page.
So i'm returned to a classic "-march=native -O2 -pipe" and i've stability and good performances.
(i think that errors may due to -Ofast (that is equal at -O3 -ffast-math) and -ffast-math is "dangerous".
Hi to All ! _________________ Gentoo: il sistema più eclettico e geniale che abbia mai provato |
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