HP Cluster Platform Interconnects v2010 Myrinet System Interconnect Guide - Page 8

Backplane and chassis types, Myrinet System Interconnect Backplane

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1.2 Backplane and chassis types The Myrinet interconnect used in an HP Cluster Platform can be a 5U (64-port) or 9U (128-port) chassis. The backplane (Figure 1-2) provides connectivity for the 8-port switch cards. Figure 1-2: Myrinet System Interconnect Backplane For configurations greater than 128 total nodes, you must build the network out to increase the number of available ports and to maintain the cross-sectional bandwidth. You accomplish this by connecting additional switches together in a hierarchical manner (Figure 1-3). This type of configuration is called a federated configuration. A federated configuration contains two types of Myrinet system interconnects: • Node-level switch • Top-level switch Figure 1-3: Federated Configuration Switches 10/100 LAN 10/100 LAN Monitor Line Card Switch Cards 76543210 0 76543210 1 76543210 2 76543210 3 76543210 4 76543210 5 76543210 6 76543210 7 76543210 8 76543210 9 76543210 10 7 6 5 4 3 2 1 0 11 7 6 5 4 3 2 1 0 12 76543210 13 76543210 14 76543210 15 Top-Level Chassis Monitor Line Card Switch Cards Switch Cards 76543210 0 76543210 1 76543210 2 76543210 3 76543210 4 76543210 5 76543210 6 76543210 7 76543210 8 76543210 9 76543210 10 7 6 5 4 3 2 1 0 11 7 6 5 4 3 2 1 0 12 76543210 13 76543210 14 76543210 15 Node-Level Chassis 1-2 Myrinet interconnect overview

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1.2 Backplane and chassis types
The Myrinet interconnect used in an HP Cluster Platform can be a 5U (64-port)
or 9U (128-port) chassis. The backplane (Figure 1-2) provides connectivity for
the 8-port switch cards.
Figure 1-2: Myrinet System Interconnect Backplane
For configurations greater than 128 total nodes, you must build the network out
to increase the number of available ports and to maintain the cross-sectional
bandwidth. You accomplish this by connecting additional switches together in a
hierarchical manner (Figure 1-3). This type of configuration is called a federated
configuration. A federated configuration contains two types of Myrinet system
interconnects:
•
Node-level switch
•
Top-level switch
Figure 1-3: Federated Configuration Switches
Top-Level Chassis
Node-Level Chassis
Monitor Line Card
Switch Cards
10/100 LAN
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Monitor Line Card
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Myrinet interconnect overview