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On Thursday 10 March 2005 2:01 pm, Gregory Boyce wrote: > I believe that NUMA systems are generally large scale SMP boxes rather > than multiple distinct computers. NUMA setups have an idea of memory > being local to a particular processor rather than just being general > system memory. > > This allows you to have removable modules for the computer with a CPU and > memory included on it in order to dynamically scale your system. The > modules plug into a high speed backplane, in some cases allowing for hot > swapping of components. > > I believe the systems themselves need to be wired for NUMA, and the > system bios needs to support it in some fashion. Even if ethernet was > fast enough, I don't believe the systems would be able to run the single > OS across the multiple systems required. > > Maybe there's some way of running a NUMA emulator over MOSIX cluster or > something. > > I did find at least a bit of useful information here: > http://lse.sourceforge.net/numa/faq/ Actually, this is not entirely true. NUMA can be implemented within a multiple CPU system, such as the HP SuperDome systems where there a a number of processors on a single board with memory, and multiple boards in the system, or a tightly coupled cluster of separate systems all of whom might share some memory. -- Jerry Feldman <gaf at blu.org> Boston Linux and Unix user group http://www.blu.org PGP key id:C5061EA9 PGP Key fingerprint:053C 73EC 3AC1 5C44 3E14 9245 FB00 3ED5 C506 1EA9
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