Date: Sat, 21 Sep 2002 22:28:52 +0900 From: Hiroharu Tamaru <tamaru@myn.rcast.u-tokyo.ac.jp> To: Alexander Leidinger <Alexander@Leidinger.net> Cc: Hiroharu Tamaru <tamaru@myn.rcast.u-tokyo.ac.jp>, bvowk@3jane.math.ualberta.ca, freebsd-hackers@FreeBSD.ORG, freebsd-ports@FreeBSD.ORG Subject: Re: Intel ICC Message-ID: <sa6r8fncvzf.wl@gin.myn.rcast.u-tokyo.ac.jp> In-Reply-To: <20020921131604.06a0caaa.Alexander@Leidinger.net> References: <sa6u1kmcbe4.wl@gin.myn.rcast.u-tokyo.ac.jp> <20020920132030.606a21b5.Alexander@Leidinger.net> <sa6sn04c7vy.wl@gin.myn.rcast.u-tokyo.ac.jp> <20020921131604.06a0caaa.Alexander@Leidinger.net>
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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-ports" in the body of the message
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