Re:Skymont: Intel's E-Cores reach for the Sky
by mlyle on Sunday January 19, 2025 @12:13PM
(#42758981)
> I don't know if the libraries support that. But I bet Intel's library (TBB) and their programmers are working on keeping their abstractions clean and efficient.
Intel can declare in ACPI a set of nodes, the distances between nodes, and then Linux/libnuma/etc pick it up.
So, e.g. in AMD's SLIT tables, the local node is 10; within the same partition are 11; within the same socket are 12; distant sockets are >=20.
There's fancier, more detailed tables (e.g. HMAT) and some code out there that uses them, but it's kind of beyond the scope of libnuma.
Intel can declare in ACPI a set of nodes, the distances between nodes, and then Linux/libnuma/etc pick it up.
So, e.g. in AMD's SLIT tables, the local node is 10; within the same partition are 11; within the same socket are 12; distant sockets are >=20.
There's fancier, more detailed tables (e.g. HMAT) and some code out there that uses them, but it's kind of beyond the scope of libnuma.