From: Erich Focht <efocht@hpce.nec.com>
To: linux-ia64@vger.kernel.org
Subject: Re: Consistency problem on IPF
Date: Mon, 12 Jul 2004 11:24:11 +0000 [thread overview]
Message-ID: <200407121324.11526.efocht@hpce.nec.com> (raw)
In-Reply-To: <40F2562C.10208@inria.fr>
On Monday 12 July 2004 13:12, Duraid Madina wrote:
> For the record, on HP-UX 11.23 the standard deviation is down around
> 0.1s for NP0, 512. For N\x1024, it's basically zero. This is on a 2-way
> 1.5G/6M system.
Which page-size was the testcode using? HPUX is more flexible here due
to different usage of the TLB.
What compiler? The initial mail sounded like gcc has been used. I'd
expect a reasonable (i.e. optimizing) compiler to recognize the
trivial matrix-matrix multiply pattern and replace it by highly
optimized code. Which would reduce the problems...
> Linux has a way to go yet...
Might be, but one should check whether comparing apples with apples
;-)
Erich
next prev parent reply other threads:[~2004-07-12 11:24 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-07-12 9:13 Consistency problem on IPF Marc Gonzalez-Sigler
2004-07-12 10:06 ` Erich Focht
2004-07-12 11:12 ` Duraid Madina
2004-07-12 11:24 ` Erich Focht [this message]
2004-07-12 11:39 ` Marc Gonzalez-Sigler
2004-07-12 12:01 ` Marc Gonzalez-Sigler
2004-07-12 20:37 ` David Mosberger
2004-07-12 21:49 ` Duraid Madina
2004-07-12 22:05 ` David Mosberger
2004-07-12 22:08 ` Rich Altmaier
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