IBM Power Systems 775 Manual page 48

Figure 1-21 Logical view of a Power 775 system
Figure 1-22 shows an example configuration of a 242 TFLOP Power 775 cluster that uses
eight Supernodes and direct graph interconnect. In this configuration, there are 28 D-Link
cable paths to route and 1-64 12-lane 10 Gb D-Link cables per cable path.
Figure 1-22 Direct graph interconnect example
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IBM Power Systems 775 for AIX and Linux HPC Solution