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Date: Mon, 19 Dec 2011 01:21:08 -0600
From: Dale <rdalek1967@gmail.com>
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Subject: Re: [gentoo-user] Re: A tale of computing thud and blunder
References: <20111217210709.GA1740@waltdnes.org> <jcj39r$cf4$1@dough.gmane.org> <20111218011054.GA2804@waltdnes.org> <20111218103449.GA21102@waltdnes.org> <jckg7m$cmn$1@dough.gmane.org> <20111219000522.GA22397@waltdnes.org> <4EEE82A5.2010909@gmail.com> <CAA2qdGW4ySDCWvUr08=JZ2f96f=jZ7OHcrGEe2JjdemCwWmD0A@mail.gmail.com> <4EEED697.4030000@gmail.com> <jcmmol$km0$1@dough.gmane.org>
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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!
Miss the compile output? Hint:
EMERGE_DEFAULT_OPTS="--quiet-build=n"