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On Jan 25, 2008 12:44 PM, John covici <covici@××××××××××.com> wrote: |
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> on Friday 01/25/2008 Andrey Falko(ma3oxuct@×××××.com) wrote |
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> > On Jan 25, 2008 10:00 AM, John covici <covici@××××××××××.com> wrote: |
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> > |
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> > > Hi folks. I right now have my CCFLAGS set to CFLAGS="-O2 |
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> > > -mtune=athlon-xp -pipe" -- now I am getting one of those new Intel |
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> > > e8400 CPU's and so I have two questions. |
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> > > |
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> > > What should I change my CCFLAGS to -- and do I have to recompile the |
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> > > whole system after this is done or what? |
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> > |
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> > |
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> > I've done this before. I moved from an old Intel 3.06 Ghz to a new |
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> Athlon64 |
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> > 4600+. I did *not* change flags before the move from system to system. |
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> After |
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> > the move, however, I changed my -march flag (in your case -mtune, |
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> which is |
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> > equivalent) and recompiled everything to have the change take effect. |
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> > |
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> > In your case, move the system from machine to machine, then change your |
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> > -mtune to: -mtune=nocona (see |
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> > |
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> http://gcc.gnu.org/onlinedocs/gcc-4.2.2/gcc/i386-and-x86_002d64-Options.html#i386-and-x86_002d64-Options |
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> ) |
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> > . When you are done with that recompile everything: emerge -e world |
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> > |
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> Thanks all -- I have a 32-bit profile, so I guess I will not be able |
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> to use ncona -- is this correct? |
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> |
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> No. nocona will not generate 64-bit code with a 32-bit profile. nocona is |
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more "native" to your cpu, but I am sure that you won't get much of a boost |
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using it over prescott. |
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|
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> |
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> -- |
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> Your life is like a penny. You're going to lose it. The question is: |
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> How do |
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> you spend it? |
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> |
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> John Covici |
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> covici@××××××××××.com |
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> -- |
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> gentoo-user@l.g.o mailing list |
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> |
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> |