I have already looked for NUMA documentations for X86-64 processors, unfortunately I only found optimization documents for NUMA.
What I want is: how do I initialize NUMA in a system (this would include getting the system s memory topology and processor topology). Does anyone know a good documentation about NUMA for X86-64 AMD and Intel processors?
I know that if you want the system topology, you can get that from the ACPI SLIT (System Locality Information Table) or SRAT (Static Resource Affinity Table). You can read more about this from the ACPI spec here (http://www.acpi.info/spec.htm), specifically sections 5.2.16 and 5.2.17.
Basically, you use the SRAT to determine which memory ranges are associated with which CPUs, and you use the SLIT to determine the relative cost of using a particular CPU/memory range. Both of these tables are optional, but in my experience, most NUMA systems at least have a useful SRAT.
As far as initialization goes, I don t think I can help much. You might want to look in to how processors are brought up on the Linux kernel (or a BSD kernel). You ll probably need to read up on local APICs too, as they are used to init x86 APs.
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该条声称,每一登记册都有预定目的,更重要的是,
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