From: Francis Galiegue <fg@mandrakesoft.com>
To: linux-ia64@vger.kernel.org
Subject: Re: [Linux-ia64] Instruction Execution
Date: Tue, 17 Oct 2000 17:17:30 +0000 [thread overview]
Message-ID: <marc-linux-ia64-105590678205578@msgid-missing> (raw)
In-Reply-To: <marc-linux-ia64-105590678205577@msgid-missing>
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
next prev parent reply other threads:[~2000-10-17 17:17 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-10-17 16:51 [Linux-ia64] Instruction Execution Mattox, Dave
2000-10-17 17:16 ` David Mosberger
2000-10-17 17:17 ` Francis Galiegue [this message]
2000-10-17 18:42 ` Jim Wilson
2000-10-17 21:15 ` Mattox, Dave
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