Date: Sat, 21 Jul 2001 00:07:59 -0700 (PDT) From: Tom <tom@uniserve.com> To: Juha Saarinen <juha@saarinen.org> Cc: 'Chan Tur Wei' <twchan@singnet.com.sg>, freebsd-stable@freebsd.org Subject: RE: FreeBSD 4.3 and 6G RAM Message-ID: <Pine.BSF.4.10.10107210005280.4917-100000@athena.uniserve.ca> In-Reply-To: <000901c111a2$f581e770$0a01a8c0@den2>
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On Sat, 21 Jul 2001, Juha Saarinen wrote: > :: Heh heh. Just a wild idea: How about a multi-processor > :: system FreeBSD where > :: each CPU gets mapped to different 4G segments? Perhaps some of the > :: address space can overlap to offer real SMP? > > Talking out of my hat here, but I don't think that's possible unless you > run a separate kernel on each CPU...? > > -- Juha Not really. The non-uniform-memory-access (NUMA) model used by SGI and IBM (Sequent) systems is pretty scalable. Each processor has dedicated fast memory, but can access other processor's memory space. SNP systems have a memory access bottleneck, that NUMA systems do not have, assuming your load can be balanced. Tom To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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