Configuring and using DDR3 memory with HP ProLiant Gen8 Servers

Setting Memory Interleave

Diasabling Memory Interleaving

This option is available from the Advanced Power Management menu in RBSU. Disabling memory interleaving saves

some power per DIMM, but also decreases memory system performance.

Setting Node Interleaving

This option is available from the RBSU Advanced Options menu and controls how the server maps the system memory

across the processors. When node interleaving is disabled (the default), BIOS maps the system memory such that the

memory addresses for the DIMMs attached to a given processor are together, or contiguous. In typical applications this

arrangement is more efficient, allowing the processors to directly access the memory addresses containing the code and

data for the programs they are executing. When Node Interleaving is enabled, system memory addresses are alternated,

or interleaved, across the DIMMs installed on both processors. In this case, each successive page in the system memory

map is physically located on a DIMM attached to a different processor. There may be some workloads, in particular those

using shared data sets, that will see improved performance with Node Interleaving enabled.

Figure 15. Node Interleaving setting in the ROM-Based Setup Utility (RBSU)