Evaluating Uniform Memory Access Mode on AMD's Turin ft. Verda (formerly DataCrunch.io)

NUMA, or Non-Uniform Memory Access, lets hardware expose affinity between cores and memory controllers to software. NUMA nodes traditionally aligned with socket boundaries, but modern server chips can subdivide a socket into multiple NUMA nodes. It’s a reflection of how non-uniform interconnects get as core and memory controller counts keep going up. AMD designates their NUMA modes with the NPS (Nodes Per Socket) prefix.NPS0 is a special NUMA mode that goes in the other direction. Rather than su...