Date: Thu, 2 Dec 2004 20:58:49 -0800 From: Steve Kargl <sgk@troutmask.apl.washington.edu> To: James <wkwu@FreeBSD.csie.NCTU.edu.tw> Cc: FreeBSD-amd64@freebsd.org Subject: Re: AMD64- Solutions Message-ID: <20041203045849.GA15850@troutmask.apl.washington.edu> In-Reply-To: <20041203011408.163FE106C28@FreeBSD.csie.NCTU.edu.tw> References: <conljc$1pep$1@FreeBSD.csie.NCTU.edu.tw> <20041203011408.163FE106C28@FreeBSD.csie.NCTU.edu.tw>
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On Fri, Dec 03, 2004 at 09:14:08AM +0800, James wrote: > ?z?b <conljc$1pep$1@FreeBSD.csie.NCTU.edu.tw> ??????????: > > FreeBSD/amd64 works well on a dual opteron Tyan K8S Pro system > > with less than 8 GB of memory. It does not boot if you have > > more than 8 GB. See the FreeBSD-amd64 list over the last week or > > 2 for detailed emails continaing the panic messages. > > I use Tyan K8S Pro (BIOS v2.03, factory default) with 16G RAM. > It works well on heavy memory load and CPU load. (mysql and others) > (Even the BIOS option SRAT on/off both works.) What type of memory are you using? Can you send me (off the mailing list) a verbose boot message? I flashed the BIOS from v2.02 to v2.03 with no improvements. > 5.3-STABLE amd64 improves a lot on performance than 5.2.1. > > Maybe you can tell us what type of your jobs. I can't boot with the full 16 GB. I need to set hw.physmem="8G" to boot. The 16 GB is on the motherboard and is detected during POST. FreeBSD simply panics if I try setting hw.physmem to anything above 8 GB. My memory is Cosair PC2700 recommended by Tyan for this motherboard. As far as my jobs, I run numerical simulations of heat transfer in biological tissues and nonlinear acoustics. The numerical techniques are standard and hybrid finite difference solutions to coupled PDEs. I can easily consume the 16 GB if not more memory as I add more realistic physics to the problem. -- Steve
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