Date: Sat, 17 Jan 2004 14:25:19 -0700 From: Joe Fenton <jlfenton@citlink.net> To: freebsd-amd64@freebsd.org Subject: Re: trouble with K8T Master2-FAR (dual Opteron) Message-ID: <4009A83F.4020208@citlink.net> In-Reply-To: <20040117200034.D19BA16A4D6@hub.freebsd.org> References: <20040117200034.D19BA16A4D6@hub.freebsd.org>
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>Satoshi Sato wrote: > >Hello, > >I'm trying to install FreeBSD/amd64 to dual Opteron machine. > > M/B: MSI K8T Master2-FAR > CPU: AMD Opteron 240 x 2 > Mem: 512MB x 2 ( in Slot 1 and 3, Single channel) > > > Is there some reason you run your memory in single channel mode as opposed to dual channel? You are needlessly cutting your memory throughput in half. CPU 1 does NOT control slots 1 and 2 while CPU 2 controlls slots 2 and 3. CPU 1 controls ALL the memory, and CPU 2 accesses the memory through the HyperTransport link. Unless your memory sticks are badly mismatched, you should have them in slot 1 and 2 for dual channel access. That is how I have my MSI Master2-FAR setup and it runs just peachy.
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