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What do you recommend for a G5: PPC oder PPC64?
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mox2k
Tux's lil' helper
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Joined: 04 Feb 2004
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PostPosted: Tue Nov 16, 2004 2:41 pm    Post subject: What do you recommend for a G5: PPC oder PPC64? Reply with quote

-- I installed PPC on my G3 and it worked fine. No problems.
-- I installed PPC64 on my G5 and it worked so and so.

In the latter case there seem to be hardly any applications which one can use. What do you recommend? Using PPC or PPC64 with a G5? I am mainly using thre G5 for

-- browsing the web (which browser can I use on PPC64 apart from x?)
-- compiling applications
-- storing my excessive mp3 selection on it
-- programming
-- writing
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minicom
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Joined: 04 Jun 2004
Posts: 25
Location: washington, dc, usa

PostPosted: Tue Nov 16, 2004 3:23 pm    Post subject: Reply with quote

I just rebuilt my G5 (2 x 1.8GHz) yesterday with the fresh 2004.3 release for PPC64 and it's working great.

I chose to run xorg-x11 6.8.0-r1, for which a binary package was graciously provided to me to ease the pain of compiling from source.

I am now building kde-3.3.0 and plan to use Firefox as my browser. So far, so good.

Hope this helps! :)


Last edited by minicom on Tue Nov 16, 2004 3:24 pm; edited 1 time in total
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Bodhisattva
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Joined: 04 Feb 2004
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Location: Warszawa, Poland

PostPosted: Tue Nov 16, 2004 3:24 pm    Post subject: Reply with quote

Hello!

Sorry - I'm not a pcc guru - I just bought my first mac month ago (maybe two months ;-) ).

Anyway - isn't G5 a 64 bit ppc arch? Using ppc for this (G5) would be like driving 30 km/h wit new Crovetta then, imho. If I'm right - definietly you can use ppc64... there are some ppc64 specific problems, but I would recommend it (I like fast 'Corvetta' rides ;-) ).

Regards,
Przemek
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bruda
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PostPosted: Tue Nov 16, 2004 3:52 pm    Post subject: Reply with quote

Eh, the idea of the previous post was rather to inquire about keywords, not binary applications.

Once you do some heavy unmasking you will find out that most applications keyworded for ppc will work under ppc64. For instance, there is a GNOME uber-bugg on bugs.gentoo.org to collect all the problems and finally keyword GNOME for ppc64 but it's been sitting there for a long time and GNOME is still not keyworded; this being said, I run GNOME 2.8 on my G5 without any significant issues.

One notable exception from what I said above is mozilla, which has a lot of problems in building--I had to tweak it quite a bit (search the fora, it's been explained) to build (and thus satisfy the GNOME dependency) and the binary itself would not work (though libraries are usable from within, e.g., epiphany). Except mozilla most applications will work just fine.

Forgot to mention, ppc or ppc64 keywords aside, all of this happens in a pure 64-bit environment.
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jaspal kallar
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PostPosted: Tue Nov 16, 2004 4:29 pm    Post subject: Reply with quote

I bought my G5 ( 2 x 1.8 ) back in April and so at that time could only install ppc. I wonder if anybody can say if there is some easy way to upgrade to ppc64 without wiping my disk clean?

Also really is there really a big difference in performance between ppc and ppc64 ?
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bruda
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PostPosted: Tue Nov 16, 2004 8:22 pm    Post subject: Reply with quote

jaspal kallar wrote:
I bought my G5 ( 2 x 1.8 ) back in April and so at that time could only install ppc. I wonder if anybody can say if there is some easy way to upgrade to ppc64 without wiping my disk clean?

By ppc I assume you mean 32-bit (again, keywords have nothing to do with binaries). If you are on a 32-bit system the upgrade feature a "cicken and egg" problem: you need a 64-bit kernel to use 64-bit binaries (such as gcc) but you need a 64-bit gcc to build a 64-bit kernel. The solution that comes to mind is to boot off a 64-bit live CD and bootstrap or install a stage 2 or stage 3 as usual on top of your existing installation. Then you can build a 64-bit kernel and you are in business. This will leave untouched the other applications, which should in principle work (a 64-bit kernel will also run 32-bit binaries). If they indeed work then you could upgrade them to native 64 bit as convenient. However, there might be possible to get incompatibilities between 64-bit libraries and 32-bit applications. If this is the case, then you have no other chance but to do a
Code:
emerge --emptytree world

Disclaimer: I have never tried this, if it breaks your system you get to keep the pieces.

jaspal kallar wrote:
Also really is there really a big difference in performance between ppc and ppc64 ?

I don't know, my G5 never ran a 32-bit system I can compare things with. What I do know is that -mcpu=G5 in your flags makes the difference between a very slow machine and a lightning fast one in the 64-bit world (and it may make the same difference for 32-bit applications).
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minicom
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Joined: 04 Jun 2004
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PostPosted: Tue Nov 16, 2004 8:25 pm    Post subject: Reply with quote

jaspal kallar wrote:
I bought my G5 ( 2 x 1.8 ) back in April and so at that time could only install ppc. I wonder if anybody can say if there is some easy way to upgrade to ppc64 without wiping my disk clean?

Also really is there really a big difference in performance between ppc and ppc64 ?


I just built my system from scratch yesterday using 2004.3 in less than an hour (using stage3 tarball). I'm talking CORE system, however, not full-functioning. :)
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