From mboxrd@z Thu Jan 1 00:00:00 1970 From: Erich Focht Date: Mon, 12 Jul 2004 11:24:11 +0000 Subject: Re: Consistency problem on IPF Message-Id: <200407121324.11526.efocht@hpce.nec.com> List-Id: References: <40F2562C.10208@inria.fr> In-Reply-To: <40F2562C.10208@inria.fr> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-ia64@vger.kernel.org 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 N24, 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