On Wed, Dec 17, 2014 at 3:00 AM, Timo Schöler <timo(a)riscworks.net> wrote:
On 12/16/2014 08:03 PM, Michael J Wolf wrote:
>> >> Hi
>> >> We briefly discussed priorities for Fedora 22 and I had taken an
>> >> action item to start an email conversation about this. So here is
>> >> what I would like to see for Fedora 22.
>> >> 1) Get the -mcpu and -mtune flags set properly for the LE build.
>> >> Should be -mcpu=power7 -mtune=power8
>> > done, all packages that honour the Fedora system wide compiler flags
>> > use them, if they don't it's a packaging bug
>> >> 2) Have a cloud image available
>> >> 3) For BE I would like another subarch. Same packages as the current
>> >> one but tuned for P8.
>> > you mean in addition to ppc64p7? can't we just switch ppc64p7 from
>> > -mcpu=power7 -mtune=power7 to -mcpu=power7 -mtune=power8?
>> This makes sense to me as it then mirrors what we have in ppc64le and
>> it saves having more targets.
> The disadvantage of this would be to cut off users that have Power 7 systems
> and optimized code. So why would people want to optimize from Fedora 21 to
> Fedora 22. You would be taking a big step back in performance. I don't
> want to suggest keeping a subarch for each type of POWER system out
> there. I
> was thinking of keeping two. So when the next POWER arch that comes out,
> the Power 7 subarch goes away and you would have Power 8 and the new
> Power arch.
That would mean that enthusiasts like myself, happily running Fedora on
a Power 285 workstation, would lose Fedora?
Um, what version of Fedora are you running on that? As far as I know,
the recent (not End-of-Live) versions of Fedora for POWER don't really
support anything less than POWER6.