Messages in this thread | | | Date | Wed, 03 Sep 2003 08:10:33 -0700 | From | "Martin J. Bligh" <> | Subject | Re: Scaling noise |
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> multi node yes, numa not much and where numa-like systems are being used > they are being used for message passing not as a fake big pc. > > Numa is valuable because > - It makes some things go faster without having to rewrite them > - It lets you partition a large box into several effective small ones > cutting maintenance > - It lets you partition a large box into several effective small ones > so you can avoid buying two software licenses for expensive toys > > if you actually care enough about performance to write the code to do > the job then its value is rather questionable. There are exceptions as > with anything else.
The real core use of NUMA is to run one really big app on one machine, where it's hard to split it across a cluster. You just can't build an SMP box big enough for some of these things.
M.
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