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thousands of CPU cores
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Date: | 2008-07-11 (18:14) |
From: | Mattias Engdegå rd <mattias@v...> |
Subject: | Re: [Caml-list] thousands of CPU cores |
>[...] There are good reasons to think that the >illusion of shared memory cannot be maintained in the presence of >hundreds of computing elements, even using cc-NUMA techniques >(i.e. hardware emulation of shared memory on top of high-speed >point-to-point links). I'm not arguing any of your points but just note that larger NUMA machines than that are available and sometimes practical - SGI Altix go up to 1024 cores with a single system image. (To answer Richard Jones's question, I know Bea have tested their JVM on such a machine but I have no idea whether it turned out to be useful. I doubt there are many Java applications actually needing such a wide JVM.)