Wiring Rules; Port Myrinet System Interconnect; Chassis Types - HP Cluster Platform Interconnects v2010 Manual

Figure 1-5: 128-Port Myrinet System Interconnect
Table 1-1 explains the chassis types, and the types and location of line cards within
the interconnects.
Table 1-1: Chassis types
Chassis Type
Bounded chassis
Node level chassis
Top level chassis

1.3 Wiring rules

When you connect cables to a Myrinet system interconnect in a bounded
configuration with 128 or fewer nodes, you connect downlinks to the application
nodes and utility nodes starting from opposite sides of the switch (Figure 1-6).
When populating node-level Myrinet system interconnects in a modular
configuration, you connect downlinks to the application nodes and utility nodes
from one side of the switch and uplinks to the top-level switches from the opposite
side of the switch. You maintain a ratio of one-to-one between the 8-port spine
cards and the 8-port switch cards in each node-level chassis. Node level chassis
slots 0-7 are reserved for spine cards (uplinks). Node level chassis slots 8-15 are
reserved for switch cards (node connections).
1-4 Myrinet interconnect overview
xc-013B-IG
Component
M3-E128 17 slot chassis
Monitoring Line Card
8 Port Switch Line Card
M3-E128 17 slot chassis
Monitoring Line Card
8 Port Spine Card
8 Port Switch Line Card
M3-E128 17 slot chassis
Monitoring Line Card
8 Port Spine Card
Quantity
Location
1
1 Slot M
1 -- 16 Slot 0 - 15
1
1 Slot M
1 -- 8 Slot 0 - 7
1 -- 8 Slot 8 - 15
1
1 Slot M
1 -- 16 Slot 0 - 15