HP Integrity Superdome SX1000 Site Preparation Guide, Fifth Edition - HP Integ - Page 103

Table B-1, SD64 Partition Configurations, Cells, partition, Cabinet 0 -Cell Slots

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Configuration Guidelines Configuration Guidelines Table 1, SD64 Partition Configurations, shows configurations that yield the best performance. However, memory may be left over. This memory is interleaved in the 16-entry tables and does not always yield the best performance. Depending on the memory configuration and the partition size the memory system performance will always increase, although not always linearly. Use the following guidelines when building partitions: • Build the largest partition first. • Keep partitions with four cells or less on the same quad. (Slots 0-3, 4-7, 8-11, and 12-15) • Keep the amount of memory on each cell in a partition as equal as possible. • Fill empty cabinets before adding to a partially populated cabinet. • For best performance, partitions should be either single cell or greater powers of 2: 2, 4, 8, and 16 cells. • Always check a new partition for bottlenecks with the formula Qx*Qy/Qt/I. See XBC-XBC Link Load Equation for more information. The partitions in the following table provide good but not always optimum link loading while allowing for growth. Table B-1 SD64 Partition Configurations #Cells per partition Cabinet 0 -Cell Slots Cabinet 1 - Cell Slots #Cells per partition 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 A I E M C K G O B J F N D L H P 16 2 AEAECGCGBF B F D H D H 8 3 AAA CCC BBB DDD 4 4 AAAACCCCBBB B D D D D 4 5 AAAA ABBB B B2 6 AAAA A ABBB B B B2 7 AAAA ABABBB B A B B2 8 AAAABABABBB B A B A B 2 9 AAAAAA A A A 1 10 AAAAAAAA A A 1 11 AAAAAAAA AAA 1 12 AAAAAAAA AAAA1 13 AAAAAAAA AAAAA1 14 AAAAAAAA A AAAAA1 15 AAAAAAAA AA A A A A A 1 16 AAAAAAAAAAA A A A A A 1 Appendix B 95

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Appendix B
Configuration Guidelines
Configuration Guidelines
95
Table 1, SD64 Partition Configurations, shows configurations that yield the best performance. However,
memory may be left over. This memory is interleaved in the 16-entry tables and does not always yield the best
performance. Depending on the memory configuration and the partition size the memory system performance
will always increase, although not always linearly.
Use the following guidelines when building partitions:
•
Build the largest partition first.
•
Keep partitions with four cells or less on the same quad. (Slots 0-3, 4-7, 8-11, and 12-15)
•
Keep the amount of memory on each cell in a partition as equal as possible.
•
Fill empty cabinets before adding to a partially populated cabinet.
•
For best performance, partitions should be either single cell or greater powers of 2: 2, 4, 8, and 16 cells.
•
Always check a new partition for bottlenecks with the formula Qx*Qy/Qt/I. See XBC-XBC Link Load
Equation for more information.
The partitions in the following table provide good but not always optimum link loading while allowing for
growth.
Table B-1
SD64 Partition Configurations
#Cells
per
partition
Cabinet 0 -Cell Slots
Cabinet 1 - Cell Slots
#Cells
per
partition
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
1
A
I
E
M
C
K
G
O
B
J
F
N
D
L
H
P
16
2
A
E
A
E
C
G
C
G
B
F
B
F
D
H
D
H
8
3
A
A
A
C
C
C
B
B
B
D
D
D
4
4
A
A
A
A
C
C
C
C
B
B
B
B
D
D
D
D
4
5
A
A
A
A
A
B
B
B
B
B
2
6
A
A
A
A
A
A
B
B
B
B
B
B
2
7
A
A
A
A
A
B
A
B
B
B
B
A
B
B
2
8
A
A
A
A
B
A
B
A
B
B
B
B
A
B
A
B
2
9
A
A
A
A
A
A
A
A
A
1
10
A
A
A
A
A
A
A
A
A
A
1
11
A
A
A
A
A
A
A
A
A
A
A
1
12
A
A
A
A
A
A
A
A
A
A
A
A
1
13
A
A
A
A
A
A
A
A
A
A
A
A
A
1
14
A
A
A
A
A
A
A
A
A
A
A
A
A
A
1
15
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
1
16
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
1