HP Integrity Superdome SX1000 - Page 242

Appendix D
Configuration
Configuration Guidelines
230
Table A-2 HP Integrity Superdome SD32 Partition Configurations
Figure D-1 hp Integrity Superdome or hp 9000 Superdome SD32
XBC-XBC Link Load Equation
A simple calculation can be made to evaluate whether or not a particular configuration will have bottlenecks.
1. The number of cells on one quad, Qx, that talk to another quad Qy
2. The total number of cells is Qt
3. The number of links between the two quads is L. (Always 1)
4. Link load is Qx*Qy/Qt/L. (Link load = 4*4/8/2 = 1).
Strive always for a link load of 1.0 or less.
The lower the link load, the better off the system. If link loads begin to approach 2, bottlenecks may occur.
For a dual cabinet system, there are six equations covering each link:
Table D-2 hp Integrity Superdome or hp 9000 Superdome SD32 Partition
Configuration
Number of
Cells per
partition
Cabinet 0 - Cell Slots (Cells 0-7)
Number of
Partitions
01234567
1 AECGBFDH8
2 ACACBDBD4
2EE1
3AAABBB2
4 AAAACCCC2
5 AAAA A1
6 AAAA A A1
7 AAAA AAA1
8 AAAAAAAA1
21
XBC 0
0
123
Quad 0
XBC 4
4
567
Quad 1
Backplane Etch
4*2/6/2=0.66x
U-turn
4*2/6/2=0.66x