Date: Sat, 21 Sep 2002 18:23:44 +0200 From: Alexander Leidinger <Alexander@Leidinger.net> To: Hiroharu Tamaru <tamaru@myn.rcast.u-tokyo.ac.jp> Cc: bvowk@3jane.math.ualberta.ca, freebsd-hackers@FreeBSD.ORG, freebsd-ports@FreeBSD.ORG Subject: Re: Intel ICC Message-ID: <20020921182344.1135a4d9.Alexander@Leidinger.net> In-Reply-To: <sa6r8fncvzf.wl@gin.myn.rcast.u-tokyo.ac.jp> 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> <sa6r8fncvzf.wl@gin.myn.rcast.u-tokyo.ac.jp>
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On Sat, 21 Sep 2002 22:28:52 +0900 Hiroharu Tamaru
<tamaru@myn.rcast.u-tokyo.ac.jp> 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.
No problem. It was funny for me.
> > 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
I'm especially interested how it compares to gcc (on a P4 and perhaps on
the Athlon).
> 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
The -x parameter for icc doesn't always helps. It depends on the
application. You may try to use some variations of -xiMKW (-xi, -xiM,
-xM, -xiMK, ...). -parallel and -mt may be of use too (and the obvious
parameters like -ipo, -tpp7, -O too).
> 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 :-) )
This sounds like nice toys... icc also produces fast code for the Athlon
(-tpp6).
Bye,
Alexander.
--
Weird enough for government work.
http://www.Leidinger.net Alexander @ Leidinger.net
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