From owner-cvs-all  Thu Jan  9 14:52: 2 2003
Delivered-To: cvs-all@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP
	id 8434B37B401; Thu,  9 Jan 2003 14:52:00 -0800 (PST)
Received: from duke.cs.duke.edu (duke.cs.duke.edu [152.3.140.1])
	by mx1.FreeBSD.org (Postfix) with ESMTP
	id 967AE43F13; Thu,  9 Jan 2003 14:51:59 -0800 (PST)
	(envelope-from gallatin@cs.duke.edu)
Received: from grasshopper.cs.duke.edu (grasshopper.cs.duke.edu [152.3.145.30])
	by duke.cs.duke.edu (8.12.6/8.12.6) with ESMTP id h09Mprro011487
	(version=TLSv1/SSLv3 cipher=EDH-RSA-DES-CBC3-SHA bits=168 verify=NO);
	Thu, 9 Jan 2003 17:51:54 -0500 (EST)
Received: (from gallatin@localhost)
	by grasshopper.cs.duke.edu (8.11.6/8.9.1) id h09Mpmm63702;
	Thu, 9 Jan 2003 17:51:48 -0500 (EST)
	(envelope-from gallatin@cs.duke.edu)
From: Andrew Gallatin <gallatin@cs.duke.edu>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Message-ID: <15901.64772.844070.407901@grasshopper.cs.duke.edu>
Date: Thu, 9 Jan 2003 17:51:48 -0500 (EST)
To: Mikhail Teterin <mi+mx@aldan.algebra.com>
Cc: Alexander Leidinger <Alexander@Leidinger.net>,
	cvs-all@FreeBSD.ORG, cvs-committers@FreeBSD.ORG,
	marius@alchemy.franken.de
Subject: Re: cvs commit: src/sys/i386/i386 mp_machdep.c
In-Reply-To: <200301091704.56189.mi+mx@aldan.algebra.com>
References: <15900.19798.145783.459116@grasshopper.cs.duke.edu>
	<20030109123807.64457d5d.Alexander@Leidinger.net>
	<15901.60186.784326.204122@grasshopper.cs.duke.edu>
	<200301091704.56189.mi+mx@aldan.algebra.com>
X-Mailer: VM 6.75 under 21.1 (patch 12) "Channel Islands" XEmacs Lucid
Sender: owner-cvs-all@FreeBSD.ORG
Precedence: bulk
List-ID: <cvs-all.FreeBSD.ORG>
List-Archive: <http://docs.freebsd.org/mail/> (Web Archive)
List-Help: <mailto:majordomo@FreeBSD.ORG?subject=help> (List Instructions)
List-Subscribe: <mailto:majordomo@FreeBSD.ORG?subject=subscribe%20cvs-all>
List-Unsubscribe: <mailto:majordomo@FreeBSD.ORG?subject=unsubscribe%20cvs-all>
X-Loop: FreeBSD.ORG


Mikhail Teterin writes:
 > You may wish to take a look at
 > 
 > 	http://www.FreeBSD.org/cgi/query-pr.cgi?pr=bin/43299
 > 
 > Especially, the follow up to it, where using SSE2 appears to slow things
 > down -- at least for double values.
 > 
 > 	-mi

Strange.  The intel compiler is slower too.  But at least it gets the
right answer, which is more than gcc can do (unless O0 is used)

icc  -O3 -tpp7 -xW:  (P4)

2^2.1 is 4.28709
11^-2.1 is 0.00650243
        5.77 real         5.68 user         0.02 sys


icc  -O3 -tpp6 -xK:  (PIII)

2^2.1 is 4.28709
11^-2.1 is 0.00650243
        5.38 real         5.13 user         0.00 sys


gcc -O3 -march=pentium4

2^2.1 is 0.5
11^-2.1 is 0.0909091
        0.63 real         0.62 user         0.00 sys

gcc -O3 -march=pentium3

2^2.1 is 4.28709
11^-2.1 is 0.00650243
        6.68 real         6.50 user         0.01 sys


I still build my system with CPUTYPE=p3, so I think my libs are OK.

Drew

To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe cvs-all" in the body of the message