What were the updates? To the SDK/case/RPi/OS, etc?

(Just thinking ahead a bit, to help us speed up any further fault finding when the new card arrives )

raspberry pi OS

anyone knows the NUMA nodes

lscpu

Architecture:             aarch64
  CPU op-mode(s):         32-bit, 64-bit
  Byte Order:             Little Endian
CPU(s):                   4
  On-line CPU(s) list:    0-3
Vendor ID:                ARM
  Model name:             Cortex-A76
    Model:                1
    Thread(s) per core:   1
    Core(s) per cluster:  4
    Socket(s):            -
    Cluster(s):           1
    Stepping:             r4p1
    CPU(s) scaling MHz:   62%
    CPU max MHz:          2400.0000
    CPU min MHz:          1500.0000
    BogoMIPS:             108.00
    Flags:                fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fph
                          p asimdhp cpuid asimdrdm lrcpc dcpop asimddp
Caches (sum of all):      
  L1d:                    256 KiB (4 instances)
  L1i:                    256 KiB (4 instances)
  L2:                     2 MiB (4 instances)
  L3:                     2 MiB (1 instance)
NUMA:                     
  NUMA node(s):           8
  NUMA node0 CPU(s):      0-3
  NUMA node1 CPU(s):      0-3
  NUMA node2 CPU(s):      0-3
  NUMA node3 CPU(s):      0-3
  NUMA node4 CPU(s):      0-3
  NUMA node5 CPU(s):      0-3
  NUMA node6 CPU(s):      0-3
  NUMA node7 CPU(s):      0-3

hwloc-ls

Machine (2005MB total)
  Package L#0
    NUMANode L#0 (P#0 2005MB)
    L3 L#0 (2048KB)
      L2 L#0 (512KB) + L1d L#0 (64KB) + L1i L#0 (64KB) + Core L#0 + PU L#0 (P#0)
      L2 L#1 (512KB) + L1d L#1 (64KB) + L1i L#1 (64KB) + Core L#1 + PU L#1 (P#1)
      L2 L#2 (512KB) + L1d L#2 (64KB) + L1i L#2 (64KB) + Core L#2 + PU L#2 (P#2)
      L2 L#3 (512KB) + L1d L#3 (64KB) + L1i L#3 (64KB) + Core L#3 + PU L#3 (P#3)
  HostBridge
    PCIBridge
      PCI 0002:01:00.0 (Ethernet)
  Net "wlan0"
  Net "eth0"

sudo numactl --hardware

available: 8 nodes (0-7)
node 0 cpus: 0 1 2 3
node 0 size: 2004 MB
node 0 free: 1826 MB
node 1 cpus: 0 1 2 3
node 1 size: 1975 MB
node 1 free: 1832 MB
node 2 cpus: 0 1 2 3
node 2 size: 2039 MB
node 2 free: 1898 MB
node 3 cpus: 0 1 2 3
node 3 size: 2039 MB
node 3 free: 1886 MB
node 4 cpus: 0 1 2 3
node 4 size: 2039 MB
node 4 free: 1886 MB
node 5 cpus: 0 1 2 3
node 5 size: 2039 MB
node 5 free: 1900 MB
node 6 cpus: 0 1 2 3
node 6 size: 2039 MB
node 6 free: 1899 MB
node 7 cpus: 0 1 2 3
node 7 size: 2030 MB
node 7 free: 1880 MB
node distances:
node   0   1   2   3   4   5   6   7 
  0:  10  10  10  10  10  10  10  10 
  1:  10  10  10  10  10  10  10  10 
  2:  10  10  10  10  10  10  10  10 
  3:  10  10  10  10  10  10  10  10 
  4:  10  10  10  10  10  10  10  10 
  5:  10  10  10  10  10  10  10  10 
  6:  10  10  10  10  10  10  10  10 
  7:  10  10  10  10  10  10  10  10 

That’s odd… as far as I know, the RPi5 has a single memory controller and a single CPU clusters, so it should only report one NUMA node, if at all. Could this be a kernel issue?

nope it is a simple power issue see this thread: 

Invalid MIT-MAGIC-COOKIE-1 key
Machine (2013MB total)
  Package L#0
    NUMANode L#0 (P#0 2013MB)
    L3 L#0 (2048KB)
      L2 L#0 (512KB) + L1d L#0 (64KB) + L1i L#0 (64KB) + Core L#0 + PU L#0 (P#0)
      L2 L#1 (512KB) + L1d L#1 (64KB) + L1i L#1 (64KB) + Core L#1 + PU L#1 (P#1)
      L2 L#2 (512KB) + L1d L#2 (64KB) + L1i L#2 (64KB) + Core L#2 + PU L#2 (P#2)
      L2 L#3 (512KB) + L1d L#3 (64KB) + L1i L#3 (64KB) + Core L#3 + PU L#3 (P#3)
  HostBridge
    PCIBridge
      PCIBridge
        PCIBridge
          PCI 0001:04:00.0 (ProcessingAccelerator)
  HostBridge
    PCIBridge
      PCI 0002:01:00.0 (Ethernet)
  Block "mmcblk0"
  Net "wlan0"
  Net "eth0"

hwloc-ls