In NUMA, a processor can access its own local memory faster than the non-local memory. NUMA nodes per socket (NPS) is a new feature added that allows you to configure the memory NUMA domains per socket. The configuration can consist of one whole domain (NPS1), two domains (NPS2), or four domains (NPS4).

How many NUMA nodes are in a socket?

NPS Configuration

There is a new feature in 2 ^nd Gen EPYC processors called NUMA Per Socket (NPS). With this feature, a single socket can be divided into up to 4 NUMA nodes. Each NUMA node can only use its assigned memory controllers.

Is NUMA node a socket?

All CPUs appear as usable CPUs on the system and can execute workloads in parallel. However, as with NUMA, threads compete for shared resources. In OpenStack, SMP CPUs are known as cores, NUMA cells or nodes are known as sockets, and SMT CPUs are known as threads.