From owner-freebsd-hackers Sat Sep 21 6:29: 1 2002 Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.FreeBSD.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 00B7F37B401; Sat, 21 Sep 2002 06:29:00 -0700 (PDT) Received: from is1.mh.itc.u-tokyo.ac.jp (is1.mh.itc.u-tokyo.ac.jp [133.11.205.11]) by mx1.FreeBSD.org (Postfix) with ESMTP id 4AF6F43E4A; Sat, 21 Sep 2002 06:28:59 -0700 (PDT) (envelope-from tamaru@myn.rcast.u-tokyo.ac.jp) Received: from is1.mh.itc.u-tokyo.ac.jp (is1.mh.itc.u-tokyo.ac.jp [127.0.0.1]) by is1.mh.itc.u-tokyo.ac.jp (Postfix) with ESMTP id 562252180D7; Sat, 21 Sep 2002 22:28:58 +0900 (JST) Received: from mailhosting.itc.u-tokyo.ac.jp (IDENT:mirapoint@mailhosting.itc.u-tokyo.ac.jp [133.11.205.3]) by is1.mh.itc.u-tokyo.ac.jp (8.11.3/8.11.3) with ESMTP id g8LDSrI08530; Sat, 21 Sep 2002 22:28:53 +0900 Received: from gin.myn.rcast.u-tokyo.ac.jp (cognac.myn.rcast.u-tokyo.ac.jp [157.82.66.106]) by mailhosting.itc.u-tokyo.ac.jp (Mirapoint Messaging Server MOS 2.9.3.2) with ESMTP id AHA16695; Sat, 21 Sep 2002 22:28:53 +0900 (JST) Date: Sat, 21 Sep 2002 22:28:52 +0900 Message-ID: From: Hiroharu Tamaru To: Alexander Leidinger Cc: Hiroharu Tamaru , bvowk@3jane.math.ualberta.ca, freebsd-hackers@FreeBSD.ORG, freebsd-ports@FreeBSD.ORG Subject: Re: Intel ICC In-Reply-To: <20020921131604.06a0caaa.Alexander@Leidinger.net> References: <20020920132030.606a21b5.Alexander@Leidinger.net> <20020921131604.06a0caaa.Alexander@Leidinger.net> User-Agent: Wanderlust/2.8.1 (Something) SEMI/1.14.3 (Ushinoya) FLIM/1.14.3 (Unebigoryae) APEL/10.3 Emacs/20.7 (i386--freebsd) MULE/4.0 (HANANOEN) MIME-Version: 1.0 (generated by SEMI 1.14.3 - "Ushinoya") Content-Type: text/plain; charset=US-ASCII Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG At Sat, 21 Sep 2002 13:16:04 +0200, Alexander Leidinger wrote: > Ok. I am the maintainer of the port, and I already added a message to > post-install (together with an update to the latest icc version). Pardon me, I should have looked more carefully. > It would be nice if you could send me the results of benchmarks (if > permitted by your employer). Yes, I have a plan to benchmark it to see if it improves my scientific numerical calculation programs. Your comment below is encouraging, since they are CPU intensive floating point and integer calculations that I assume are quite suitable for parallel execution. This is also a memory intesive calculation so I am planning to check out which is the bottle neck (and to help this I happen to have i845, i850, i845G, and also MPX760 Athlones :-) ) > Don't expect the multithreading to have a significant positive impact. A > local computer magazin (http://www.heise.de/iX/) played a little bit > around with it and the result was, that it isn't good for the kernel > scheduler (better performance without multithreading). But it improves > code with mixed integer/floating-point instructions (good speed > improvements (+75%) if you run integer and floating-point code in > parallel). -- Hiroharu Tamaru To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message