Enterprise Linux

Hello 

We are starting to work with RHEL on Power10,we are installing a RHEL 9.2 setting default install options at POWER10 (S1024, 32 processors) with dual VIOS environment.

Is there any way to create an LPAR for Linux that has two NUMA nodes?

LPAR with 3 dedicated processors smt=4 

$  numactl --hardware
available: 1 nodes (0)
node 0 cpus: 0 1 2 3 8 9 10 11 16 17 18 19
node 0 size: 813763 MB
node 0 free: 629986 MB
node distances:
node   0
  0:  10

$ lscpu
Architecture:            ppc64le
  Byte Order:            Little Endian
CPU(s):                  24
  On-line CPU(s) list:   0-3,8-11,16-19
  Off-line CPU(s) list:  4-7,12-15,20-23
Model name:              POWER10 (architected), altivec supported
  Model:                 2.0 (pvr 0080 0200)
  Thread(s) per core:    4
  Core(s) per socket:    3
  Socket(s):             1
Virtualization features:
  Hypervisor vendor:     pHyp
  Virtualization type:   para
Caches (sum of all):
  L1d:                   192 KiB (6 instances)
  L1i:                   288 KiB (6 instances)
  L2:                    6 MiB (6 instances)
  L3:                    24 MiB (6 instances)
NUMA:
  NUMA node(s):          1
  NUMA node0 CPU(s):     0-3,8-11,16-19

Thanks & Regards

I don't have S1024 to check it but as for me these small systems were always "single node". 

If you want the special placement, shutdown your LPAR, create temporary LPARs with some resources and start them into OF mode. You don't need any operating system. Then start your LPAR and check the placement, if it suits to your requirements. There are several placement policies for LPARs but I didn't do it for some time and am a bad advisor for this case. I remember you could set them through HMC command line interface but not through GUI.