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2.2.2 High-Speed Interconnects
In high performance computing application performance depends on the number of CPU/GPU cores, memory,
interconnect, storage performance and so on. For a server to perform better, lower latency and higher
bandwidth is needed for these systems to communicate with each other. The type of network chosen for
computational traffic depends upon the latency, bandwidth, packet size at peak bandwidth and the message
rate. The types of computational network and the switch through which it is offered are tabulated below:
Table 1 Interconnect switches
Type of Interconnect
Switch
Fourteen Data Rate (FDR)
Mellanox SX6036
Extended Data Rate (EDR)
Mellanox SB7790
10Gb Ethernet
S4820-T, N4032-F, S6000, Z9500
Intel® Omni-Path (OPA)
Dell Networking H1048-OPF
Mellanox SX6036
• 36 FDR (56Gb/s) ports in a switch
• Port-to-port latency 200ns
• Up to 4Tb/s aggregate switching capacity
• 19” rack mountable chassis, 1U with optional redundant power supplies and Fan units
• On-board SM for fabrics up to 648 nodes.
Mellanox SB7790
• 36 EDR (100Gb/s) ports in a switch
• Port-to-port latency 90ns
• Up to 7Tb/s aggregate switching capacity
• 19” rack mountable chassis, 1U with optional redundant power supplies and Fan units
• On-board SM for fabrics up to 2k nodes.
Dell Networking S6000
• 1U high-density 10/40GbE ToR switch with 32 ports of 40GbE (QSFP+) or 96 ports of 10GbE and
eight ports of 40GbE or 104 ports of 10GbE.
• Up to 2.56Tbps of switching capacity.
Dell Networking Z9500
• High-density 3U with 132 ports of 40GbE (528 ports of 1/10GbE using breakout cables)