Fujitsu PRIMEPOWER650, Руководство пользователя

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3.5 Configuring for the Fast Memory Mode
3.5 Configuring for the Fast Memory Mode
As optional functions for faster memory, interleave modes are available.
This section provides an overview of the interleave modes, along with hardware
conditions, setup procedures, and notes about use of these modes.
3.5.1 Interleave modes
(1) Overview
The following interleave modes are available:
l
Normal interleave mode
l
Expanded interleave mode
- Expanded 2-SB interleave mode
The expanded interleave mode has a function that improves performance in memory
access to a continuous area of memory space. If multiple system boards are mounted
and they are logically contiguous, this function is implemented by adopting an
address allocation method in which memory addresses are mapped in the direction of
the system boards. The expanded interleave mode reduces the possibility of memory
device and memory bus conflicts, thereby increasing memory throughput.
Figure 3.21 Interleave mode
Address allocation direction