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Cyrix VIA-C3 processor?
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fuqqer
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Joined: 21 Jul 2002
Posts: 13
Location: Boulder CO - USA

PostPosted: Fri Jul 26, 2002 8:19 pm    Post subject: Cyrix VIA-C3 processor? Reply with quote

I have a Cyrix 700 MHZ C3 processor on a little computer and I wanted to install Gentoo on it. I was curious if anybody knows what CXXFLAGS, CFLAGS, and any other optimizations/variables I should set before I bootstrap this bad boy. I really don't want to use -march=i386. It will eventually be part of a MOSIX cluster, so should I put -D__SMP__ -O3 in the make.conf as well?

Thanks
Jake
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BonezTheGoon
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Joined: 14 Jun 2002
Posts: 1375
Location: Albuquerque, NM -- birthplace of Microsoft and Gentoo

PostPosted: Fri Jul 26, 2002 10:14 pm    Post subject: Reply with quote

What method are you going to use to install with? Are you using Gentoo 1.2 or 1.3b? The difference is that one uses GCC 2.95 and the other uses GCC 3.1. The optimizations are very different and you may want to read up on them. You should check here http://www.gnu.org/software/gcc/gcc.html

Hope that helps!

Regards,
BonezTheGoon
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fillerbunny
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Joined: 21 May 2002
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PostPosted: Sat Jul 27, 2002 11:34 am    Post subject: Reply with quote

Hi there,

I'm using gentoo with gcc 3.1 on a via eden with ezra 800 chip,
using setting -march=i586 -m3dnow with no problem so far.

I did the original gentoo install using 1.2, with gcc 2.95 using
-march=i586. i686 won't work.

The -m3dnow option is new in gcc 3

Future versions of gcc may have a -march=viac3 option which
will have optimization more specific to the ezra chip. There are
a few posts on the gcc lists at gcc.gnu.org about this.
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syadnom
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Joined: 09 May 2002
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PostPosted: Mon Jul 29, 2002 10:57 pm    Post subject: ....optimizations? Reply with quote

the ezra doesn't have any special instructions that you could optimize for, just consider is a K6-3...basically a p2 with 3dnow...

their is a via-c3 kernel addition and tools package to manage the power saving features of the chip :)
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fillerbunny
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PostPosted: Tue Jul 30, 2002 9:41 am    Post subject: Reply with quote

Hi Syadnom,

Do you have any pointers to this via-c3 kernel addition and tools package?

thanks
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syadnom
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PostPosted: Tue Jul 30, 2002 7:47 pm    Post subject: here Reply with quote

in the kernel config :
Processor type and features->CPU Frequency scaling->VIA C3/C5?Cyrix III Longhaul.

i cant seem to find the packages for the via cpu, i thought i saw them while searching through kportagemaster....you should look at the package list on the gentoo home page.
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pjp
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Joined: 16 Apr 2002
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PostPosted: Tue Jul 30, 2002 8:53 pm    Post subject: Reply with quote

I'll be interested to hear how things go. My P90 I was going to use for a firewall seems dead. I'm considering using one of the VIA eden boards.
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syadnom
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Posts: 531

PostPosted: Wed Jul 31, 2002 5:20 am    Post subject: Reply with quote

id like to use one for my car A/V system id like to build, and i can't stand the thought of a bunch of fans to make noise and get dusty and fail..these via chips seem to be the answer..im glad linux is supporting the advanced features of these chips.

my $.02
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