Re: [gentoo-user] Re: A tale of computing thud and blunder

[Dale <rdalek1967@gmail.com>]

Nikos Chantziaras wrote:
> On 12/19/2011 08:15 AM, Dale wrote:
>> Pandu Poluan wrote:
>>>
>>> Kind of like what I always do when I switch from -march=nocona to
>>> -march=native. (Usually I use -march=nocona to ensure seamless VM
>>> migration on my XenServer-equipped boxen, but for some VMs, i.e.,
>>> those requiring me to wring out every last drop of performance, I go
>>> native.)
>>>
>>> That said, if you want to experience fully the "GCC Graphite"
>>> optimizations, you'll also want to do emerge -ev ;-)
>>
>>
>> Is Graphite worthwhile on a desktop system or is it better suited for
>> servers or both?
>
> This isn't something that even remotely has anything to do with 
> servers or desktops.  Just like -O2 does not magically work better on 
> servers.
>
>

Sounds like it may work on both then.  That's sort of what I was 
thinking but wasn't sure.

>> I found this but still not sure what it is intended for:
>>
>> http://gcc.gnu.org/wiki/Graphite/4.5
>
> It's an optimization that produces faster running executables.  Are 
> you interested in *how* it works :-)
>
>

 From what I read it makes some processes run in parallel instead of 
serial or one at a time.  Some think it is meaningless but some think it 
is awesome.  I don't know what to think since I have not used it or 
compared the differences.


>> Are there any reasons to leave this be for a while? You know, bugs or
>> packages that don't work with it?
>
> Just like with any other optimization switch, there can be bugs.  If 
> Gentoo says it doesn't support graphite, then I'd stay away from it 
> because Gentoo devs might not listen to your bug reports if you use 
> it.  I don't know if they support it or not though.
>

That would be another good thing to know.  I don't file many bug reports 
but if something breaks and it needs one, I do file them.  This may be 
like good wine.  It may need to rest a while longer unless someone else 
knows it is supported and works well.  I got a good install and I don't 
want to break it.

Dale

:-)  :-)

-- 
I am only responsible for what I said ... Not for what you understood or how you interpreted my words!

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EMERGE_DEFAULT_OPTS="--quiet-build=n"