Configuring ANC mode

About this task

Configure the Ampere Non-Uniform Memory Access Control (ANC) mode to divide the cores, cache, and memory of the processor into multiple Non-Uniform Memory Access (NUMA) domains. Enabling this option can increase performance for workloads that are NUMA aware and optimized.

Procedure

  1. From the System Utilities screen, select System Configuration > BIOS/Platform Configuration (RBSU) > Processor Options.
  2. Select a setting:
    • Monolithic (default)—Systems configured with monolithic mode have a single NUMA partition per socket. All cores have the same access to the available memory channels on the socket.
    • Hemisphere—Systems configured with hemisphere mode have two NUMA partitions per socket. Half of the cores are grouped and half of the memory channels are assigned. The remaining cores are assigned to the other partition with the remaining memory channels.
    • Quadrant—Systems configured with quadrant mode have four NUMA partitions per socket. Each quadrant contains a quarter of the cores and is assigned the physically closest MCU pair.
  3. Save your setting.