Hitachi Compute Blade 2000 User Manual page 1072

LPAR manager operation on the server blade in NUMA configuration
When Scheduling mode is dedicated mode
The high memory access performance is gained when assigning the physical memory
and physical processor in the same node to the LPAR (shown as LPAR1), which is
because the the logical processor of the LPAR uses local memory at any time.
When assigning the physical memory and physical processor in the different node to
the LPAR (shown as LPAR2), the access memory performance becomes lower, which
is because the logical processors of the LPAR use remote memory at any time.
The memory access performance depends on the configuration which processor and
memory are assigned to LPAR in dedicated mode, there might be a difference between
LPARs.
LPAR1
1way
LPAR2
2way
Dedicated mode
Physical processor
t
Socke
Core
small
Physical memory
Memory accesses of processors in dedicated mode
Logical processor
Dedicated mode Dedicated mode
large
Node0 Node1
1021
Memory access
Memory
access cost