Date: Thu, 27 Mar 2008 17:28:17 -0700 From: Julian Elischer <julian@elischer.org> To: Kris Kennaway <kris@FreeBSD.org> Cc: freebsd-smp@freebsd.org, Michael Stogsdill <mstogsdill@sycamore.us> Subject: Re: SMP/HTT and Beowulf cluster on FreeBSD 7.0-RELEASE Message-ID: <47EC3BA1.6070808@elischer.org> In-Reply-To: <47EC2744.6010405@FreeBSD.org> References: <11970534.342511206657117969.JavaMail.root@dcifs4> <47EC2744.6010405@FreeBSD.org>
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Kris Kennaway wrote: > Michael Stogsdill wrote: >> Hey, I have a question that I can't seem to find a decent answer to. >> The mailing lists have had some similar topics, but they were mostly >> for the 6.x-RELEASE and other minor differences. >> Heres my situation; I'm trying to create a beowulf cluster running >> FreeBSD 7.0-RELEASE consisting of 8 systems all running on Dual Xeon >> w/HTT both running at 2.8Gz. What exactly this system will be doing I >> can't say, so lets just think about the performance of the cluster >> running a benchmarking tool similar to sysbench. Because they are dual >> processor systems, I will be using the SMP kernel already, so I'm >> wondering if turning on HTT will help or hinder my Beowulf' >> performance. The cluster is not yet operational, otherwise I would do >> some tests myself! > > The answer is always "HTT performance depends on your workload. Try it > and see if it helps". new processors are not quite as bad as the original HTT processors. also, if the workload includes a mix of FP and integer work it will be worth having them on. > > Kris > _______________________________________________ > freebsd-smp@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-smp > To unsubscribe, send any mail to "freebsd-smp-unsubscribe@freebsd.org"
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