HP Z230 Workstation - Maintenance and Service Guide

Non-Uniform Memory Access (NUMA)
Non-uniform memory access (NUMA) is available on some workstations. NUMA can improve memory
bandwidth and latency for multi-process or multi-threaded applications or workloads. Observed
performance improvements depend on the operating system, customer workload, system configuration, and
the degree to which the applications used are designed to be NUMA-aware/efficient.
NUMA requires that both processor sockets be populated. Installed memory should be balanced between
both processors for maximum performance.
NUMA is enabled if Memory Node Interleave is disabled in the system BIOS. To do this, press f10 during
startup to enter Computer Setup (f10) Utility. Select Advanced > Chipset/Memory. Use the arrow keys to set
Memory Node Interleave to Disable. Press f10 to exit the menu, and then select File > Save Changes and
Exit. Your change takes effect when the computer restarts.
BIOS ROM
The BIOS ROM is a collection of machine language applications stored as firmware in ROM. It includes
functions such as Power-On Self-Test (POST), PCI device initialization, Plug and Play support, power
management, and Computer Setup (f10) Utility.
Go to
http://www.hp.com/go/quickspecs to review the latest BIOS ROM specifications.
22 Chapter 2 System management