From mboxrd@z Thu Jan 1 00:00:00 1970 From: Francis Galiegue Date: Tue, 17 Oct 2000 17:17:30 +0000 Subject: Re: [Linux-ia64] Instruction Execution Message-Id: List-Id: References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-ia64@vger.kernel.org On Tue, 17 Oct 2000, Mattox, Dave wrote: > > I ran a loop 666,000,000 times and it appears that each bundle is taking 3 > seconds to execute. So this means 3 cycles per bundle, > or 1 cycle per instruction. Is the Lion SDV Machine executing instructions > serially? If it is, is it Linux setting this, or are the beta chips disabled > in some manner? > ia64 does not do instruction reordering, at least this is what I've heard, and nothing which I have read until now seems to deny this. All insn ordering for faster execution should therefore be done by the compiler. No URL to give you, sorry... -- Francis Galiegue, fg@mandrakesoft.com "Programming is a race between programmers, who try and make more and more idiot-proof software, and universe, which produces more and more remarkable idiots. Until now, universe leads the race" -- R. Cook