________________________________________ From: beowulf-boun...@beowulf.org [beowulf-boun...@beowulf.org] On Behalf Of Greg Lindahl [lind...@pbm.com] Sent: Friday, April 03, 2009 4:32 PM To: beowulf@beowulf.org Subject: Re: [Beowulf] Rackable / SGI
On Fri, Apr 03, 2009 at 08:47:42AM +0200, Eugen Leitl wrote: > On Fri, Apr 03, 2009 at 07:34:26AM +0800, Stuart Midgley wrote: > > > In 2019 when Intel releases their 1024core chip, still at 2.5GHz with > > 256GB dimm memory, a lot of people will be surprised that linux works > > Ain't going to work. Arguably doesn't work already beyond 8 cores > in a single socket. > > Will have to do with embedded memory or stacked 3d memory a la > http://www.cc.gatech.edu/~loh/Papers/isca2008-3Ddram.pdf We've been building bigger and bigger SMPs for a long time, making changes to improve the memory system as needed. How is multicore any different? memory bandwidth? The number of cores on a single CPU is growing much faster than the memory bandwidth to that CPU, right?
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