Date: 21 Jan 2003 10:16:03 -0500 From: Lowell Gilbert <freebsd-questions-local@be-well.no-ip.com> To: freebsd-questions@freebsd.org Subject: Re: memory limit problem again. Message-ID: <448yxejzyk.fsf@be-well.ilk.org> In-Reply-To: <001a01c2c03b$b24efe40$1500a8c0@ilovefd533> References: <001a01c2c03b$b24efe40$1500a8c0@ilovefd533>
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"ilovefd" <ilovefd@abelia.ocn.ne.jp> writes: > I am a user of FreeBSD-4.7. > I baught a Mother board(P4QH6) with Xeon MP from Supermicro. > > Supermicro says about P4QH6 > > Yes the MP Xeons and this motherboard can fully access 32GB of main > memory. The processor is a 32 bit instruction code processor, but is a > 64 bit device which easily accesses 32GB of main memory. This doesn't parse quite right, but it definitely seems incorrect in any case. The Xeon is a 32-bit device, period. It has 4GB of address space, period. What this system can do is window into the memory in some fairly sophisticated ways, but it's still only a 4GB address space. > How should I do to let FreeBSD-4.7/5.0 access to 32GB mem? So far as I know, nobody is working on supporting this functionality, because it's a fairly slow way of getting access to extra memory. > IA64 is available for it? No. IA64 is strictly for Itanium, at least for the moment. Xeons are *not* IA64. > Or Shoul I chose any other operationg system? Windows is the only system that will use it at all well, but I seem to recall that Linux had some work on support for it. For nearly any general-computing application, though, you'll get better performance at a given price by using systems that can address all of their own memory directly. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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