From: Bob Sanders <rmsand@concentric.net>
To: gentoo-user@lists.gentoo.org
Subject: Re: [gentoo-user] hardware advice for dual-processor set-up on gentoo
Date: Mon, 12 Sep 2005 20:07:33 -0700 [thread overview]
Message-ID: <20050912200733.3da4cc99@chi.speakeasy.net> (raw)
In-Reply-To: <d9a0a6da050912134040cde233@mail.gmail.com>
On Mon, 12 Sep 2005 15:40:24 -0500
Denis <denis.che@gmail.com> wrote:
> With my need for parallel execution of several single-thread Monte
> Carlo and Finite Element tasks, what would be the pros and cons in
> considering the Xeons and Opterons?
> i
Xeons - massive memory bandwidth. Really can't be beat for this, at the
moment. Very useful in specific cases, mostly involving video.
Very costly in power consumption and heat production.
Intel's compiler fairly cheap - approx. $600. Free for non-commerical
home use.
Opterons - more instructions issues per clock. Held back by memory bandwidth.
Dual core very efficient for multi-threaded apps. Memory bandwidth issues
won't be resolved until Jan/Feb when the new socket gets released and
HyperTransport 3 with DDR2 is introduced. But stable platform will occur
around Summer 2006. PathScale compiler a bit expensive - $900, but
makes any AMD scream. All SpecFP/INT benchmarks are done with
the PathScale compiler. BTW - The PathScale compiler will optimize
Xeons as well. Perhaps not as nice as Intel's compiler.
> What would be some issues and software limitations for me in trying to
> get the AMD Opterons running on Gentoo? And would I use an x86
> platform or an AMD64 platform?
>
Typing this on one now. I have been running Gentoo on a couple of 2P Opteron
systems for a couple of years now. No real issues - sometimes an app won't compile.
The early K8W motherboard I have has come bug in it or the memory on one cpu has
an issue, but it has a workarounds. I've had it up to a load average of 70, run it
out of virtual memory, and no crashing.
The other system is mainly used as an NFS file server, running Gentoo, loading distributions
for testing onto other systems.
Bob
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gentoo-user@gentoo.org mailing list
next prev parent reply other threads:[~2005-09-13 3:13 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-09-12 20:40 [gentoo-user] hardware advice for dual-processor set-up on gentoo Denis
2005-09-12 21:13 ` Mike Williams
2005-09-12 21:51 ` John Jolet
2005-09-12 23:23 ` Denis
2005-09-13 3:07 ` Bob Sanders [this message]
2005-09-13 4:01 ` Denis
2005-09-13 4:47 ` Denis
2005-09-15 1:03 ` Bob Sanders
2005-09-15 18:23 ` A. Khattri
2005-09-16 0:24 ` Dave Nebinger
2005-09-16 0:54 ` Denis
2005-09-15 23:27 ` - -
2005-09-15 23:40 ` - -
2005-09-15 23:53 ` Bob Sanders
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