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From: Dara Hazeghi <dhazeghi@yahoo.com>
To: nobody@gcc.gnu.org
Cc: gcc-prs@gcc.gnu.org,
Subject: RE: optimization/8474: -mcpu=i686 produces much faster code than -mcpu=pentium4 on a P4 machine
Date: Tue, 20 May 2003 00:46:00 -0000 [thread overview]
Message-ID: <20030520004601.28986.qmail@sources.redhat.com> (raw)
The following reply was made to PR optimization/8474; it has been noted by GNATS.
From: Dara Hazeghi <dhazeghi@yahoo.com>
To: Dave <davejf@starband.net>
Cc: gcc-gnats@gcc.gnu.org
Subject: RE: optimization/8474: -mcpu=i686 produces much faster code than -mcpu=pentium4 on a P4 machine
Date: Mon, 19 May 2003 17:38:50 -0700 (PDT)
--- Dave <davejf@starband.net> wrote:
> New results are attached - sorry for the delay (been
> busy lately).
No problem. It doesn't look like the problem is
solved, so I guess we'll leave the PR open, and hope
somebody notices it...
Thanks for your feedback,
Dara
>
> These were run on Red Hat 9 (I installed that rather
> than Mandrake v9.1)
> rather than the original RH 8 system.
>
> Doesn't seem to be any improvement for P4 or with
> gcc 3.4.
>
> - Dave
>
> On Wed, 2003-05-14 at 19:43, Dara Hazeghi wrote:
> > Doh, I forgot to statically link the 3.4 ones (new
> > version of libstdc++). Just a sec...
> >
> > Here, I statically linked them (the 3.4 ones) this
> > time.
> >
> > Dara
> >
> whetstone took: 1.05 secs for 952 MFLOPS (w/ math
> lib)
> whetstone took: 0.39 secs for 2564 MFLOPS (w/o math
> lib)
>
> whet33p4
> whetstone took: 1.04 secs for 962 MFLOPS (w/ math
> lib)
> whetstone took: 0.40 secs for 2500 MFLOPS (w/o math
> lib)
>
> whet34p3
> whetstone took: 1.05 secs for 952 MFLOPS (w/ math
> lib)
> whetstone took: 0.40 secs for 2500 MFLOPS (w/o math
> lib)
>
> whet34p4
> whetstone took: 1.06 secs for 943 MFLOPS (w/ math
> lib)
> whetstone took: 0.39 secs for 2564 MFLOPS (w/o math
> lib)
>
>
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next reply other threads:[~2003-05-20 0:46 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-05-20 0:46 Dara Hazeghi [this message]
-- strict thread matches above, loose matches on Subject: below --
2003-05-21 9:28 ehrhardt
2003-05-14 10:26 giovannibajo
2003-05-13 18:46 Dara Hazeghi
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