Here is a collection of NUMA FAQs which will help you understand NUMA concepts and terminology. From sourceforge:
Here is a link to the same sourceforge project showing some diagrams contrasting SMP and NUMA architectures.
The following link describes the current status of NUMA features in the Linux kernel:
This link contains some descriptive text explaining some key NUMA features.
Don't forget to review the Documentation subdirectory for more information on NUMA concepts and features.
For some exciting reading, check out these files in any recent Linux source tree:
This is the sourceforge project page for the LSE (Linux scalability effort) subproject called NUMA. This would be a good place to start reading about NUMA support on Linux.
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