On Thursday, 23 September 2021 17:38:15 BST Peter Humphrey wrote: > I've booted a kernel with no NUMA config, and it seems to run fine on this > single-socket Ryzen motherboard. I just get the one entry in dmesg: > > $ dmesg | grep -i numa > [ 0.297998] pci_bus 0000:00: on NUMA node 0 > > That's it. I'm running five BOINC projects, some of which run on vbox, so on > this motherboard it seems clear that I don't need NUMA.
Out of interest, have you tried booting a NUMA enabled kernel to see what dmesg reports? On an old laptop, which definitely has only a single AMD APU, I get: $ dmesg | grep -i NUMA -A2 [ 0.002078] No NUMA configuration found [ 0.002080] Faking a node at [mem 0x0000000000000000-0x000000042effffff] [ 0.002085] NODE_DATA(0) allocated [mem 0x42effc000-0x42effffff]
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