Date: Fri, 11 Dec 1998 09:46:23 +1030 From: Greg Lehey <grog@lemis.com> To: Tom Bartol <bartol@salk.edu>, freebsd-questions@FreeBSD.ORG Cc: Joel Stiles <joel@ged.bio.cornell.edu> Subject: Re: Maximum possible RAM with 450NX ? Message-ID: <19981211094623.A455@freebie.lemis.com> In-Reply-To: <Pine.BSF.3.96.981210144006.51850G-100000@eccles.salk.edu>; from Tom Bartol on Thu, Dec 10, 1998 at 03:02:48PM -0800 References: <Pine.BSF.3.96.981210144006.51850G-100000@eccles.salk.edu>
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On Thursday, 10 December 1998 at 15:02:48 -0800, Tom Bartol wrote: > > Hi all, > > We're in the process of writing an NSF research grant proposal in which > we'd like to ask for 4, Quad CPU Xeon's with 4GB RAM each (i.e. 16 CPU's > total in 4 machines, 4GB per machine). We have a REAL need for this kind > of BIG memory (and, as usual, what's BIG today is small potatoes > tomorrow). Polywell, www.polywell.com, sells just such a 450NX-based > machine, and AMI has a 450NX-based motherboard which can go to 4GB on one > board (16 DIMM slots) with the option of a second 4GB board for a total > of 8GB! Will FreeBSD run (or is it planned to run) on such systems and > how would it (or WinNT for that matter) access memory above the 4GB limit > of a 32bit address space? Perhaps the memory in one 4GB chunk is > accessible on a given processor but not on the others so a Quad CPU > machine really acts more like two or several machine in the same chassis? > Any insights would be most welcome. Please respond directly to me as I > don't monitor the -questions mail list. I've heard of problems running 2 GB or more of memory (this is the point where the total memory size is negative in 32 bit signed arithmetic). I'm sure that the problems are solvable, but you might be the one who has to solve them. Greg -- See complete headers for address, home page and phone numbers finger grog@lemis.com for PGP public key To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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