[Debian-ppc64-devel] I am planning to restart ppc64 ports project

[Thibaut VARÈNE]

Le 5 oct. 10 à 05:32, Brian Morris a écrit :

> On 10/4/10, Wartan Hachaturow <wartan.hachaturow at gmail.com> wrote:
>>
>>
>> The same reasoning as before applies -- why would you want to do  
>> this?
>> What are the benefits compared to multiarch ppc32/ppc64?
>>
> If you are using double precision floating point, the speed of a
> program compiled 32bit on a 64bit machine is much much slower (maybe
> 1/10). The 64bit kernel supports 64bit operation Only if the program
> is compile 64 bit ! Moreover with any app there are library calls.
>
> However if compile 64bit, with altivec support, won't run on 32bit
> machine. But with 32bit and altivec will run faster on both but
> floating point not faster on on 64bit machine. But other things faster
> on both.
>
> best to try building and testing with various options to see.

Are you a Gentoo user? ;^P