Oracle Exadata X10M - Populating Dimms for Optimal System Performance

Populating DIMMs for Optimal System Performance
Optimal performance is generally achieved by populating the DIMMs so that the
memory is symmetrical, or balanced. Symmetry is achieved by adhering to the
following guidelines:
• Populate DIMMs of the same size in multiples of twelve (six for each processor).
• The DIMM population for each processor (P0 and P1) must be identical.
Table 9-2 DIMM Memory Slot Population Requirements
DIMMs per
CPU
Channel
Population
Order
Memory Slots CPU-0/1
Revision 3 Memory
Channel
F E D C B A G H I J K L
12 DIMMs
per CPU
DIMM #
DIMM
Installed
D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11
X X X X X X X X X X X X
10 DIMMs
per CPU
DIMM #
DIMM
Installed
D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11
E X X X X X X X X X X E
8 DIMMs
per CPU
DIMM #
DIMM
Installed
D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11
E X E X X X X X X E X E
6 DIMMs
per CPU
DIMM #
DIMM
Installed
D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11
E E E X X X X X X E E E
4 DIMMs
per CPU
DIMM #
DIMM
Installed
D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11
E E E X E X X E X E E E
2 DIMMs
per CPU
DIMM #
DIMM
Installed
D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11
E E E E E X X E E E E E
1 DIMMs
per CPU
DIMM #
DIMM
Installed
D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11
E E E E E X E E E E E E
Note:
AMD only tests and validates the population ordering documented. Other
populations may work but are NOT supported.
Dual or single processor requirements are as follows:
• Populating DIMMs in Dual-Processor Systems for Optimal System Performance
• Populating DIMMs in Single-Processor Systems for Optimal System Performance
Chapter 9
Populating DIMMs for Optimal System Performance
9-4