This setting enables a trade-off between minimizing local memory latency for NUMAaware or highly parallelizable workloads vs. maximizing per-core memory bandwidth for non-NUMA-friendly workloads. The default configuration (one NUMA domain per socket) is recommended for most workloads. NPS4 is recommended for HPC and other highly parallel workloads.Here is the detail introduction for such options:
• NPS0: Interleave memory accesses across all channels in both sockets (not recommended)
• NPS1: Interleave memory accesses across all eight channels in each socket, report one NUMA node per socket (unless L3 Cache as NUMA is enabled)
• NPS2: Interleave memory accesses across groups of four channels (ABCD and EFGH) in each socket, report two NUMA nodes per socket (unless L3 Cache as NUMA is enabled)
• NPS4: Interleave memory accesses across pairs of two channels (AB, CD, EF and GH) in each socket, report four NUMA nodes per socket (unless L3 Cache as NUMA is enabled)