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Default Hyperscaler 18432 R200 HGX CX-9 Hyperscaler Infiniband Cluster Configuration

HS-R200-IB-8R CPO

Default Hyperscaler · R200 · CX-9

Rack type
HGX NVL8
Cluster / location
Default R200 HGX
Buyer profile
Hyperscaler
Networking type
Infiniband
Number of XPUs
18,432
NIC used
CX-9
NICs / XPU
1
Scale-out BW / XPU
800G
XPU / server
8

Scale-up network

1 rows
Assigned blockDefault
R200 - HGX NVL8
Scale-UpXPU: R200 HGX NVL81 lineshared by 4 SKUs

Scale-up Units are based on the scale-up world size (8 XPUs).

XPU World Size

2
WS
Scale-Up Network LayerPart / Model
Units#
Unit BWGbit/s uni-d
Port Count#
Port BWGbit/s uni-d
XPUs per Node·814,40018800
Scale-Up World Size·8115,200··

Switches

2
SW
Scale-Up Network LayerPart / Model
Units#
Unit BWGbit/s uni-d
Port Count#
Port BWGbit/s uni-d
per SwitchNvidia NVSwitch 6.0 (NVLink 6)128,80072400
Scale-Up Switch TotalNvidia NVSwitch 6.0 (NVLink 6)4115,20072·

Scale-Up Parts Summary

1
ItemQty/ClusterQty/ServerAttach/XPU
Nvidia NVSwitch 6.0 (NVLink 6)9,2164.000.50

Backend network

4 rows
Assigned blockDefault
R200 - HGX NVL8 - CX9 - 3L - IB - X800-Q3450 CPO - Generic
BackendXPU: R200 HGX NVL84 linesshared by 2 SKUs

Backend Units are based on the cluster size (18,432 XPUs).

Switches

5
SW
 Network Layer
Switch and Server SpecAggregate Port UtilizationNetwork Bandwidth Aggregate
SwitchPart Name / Model
Units#
Unit BWGbit/s
Port BWGbit/s
Downlink Ports / SW#
Uplink Ports / SW#
Max Ports#
Downlink Ports#
Uplink Ports#
Total Ports#
Downlink BWTbit/s
Uplink BWTbit/s
OversubRatio
XPUs·18,432800800018,43218,432018,43218,432014,745.6·
NICs per NodeConnectX-9 NIC - 800G8800200··4······
LeafQuantum-X800-Q3450 CPO256115,200800727214418,43218,43236,86414,745.614,745.61
SpineQuantum-X800-Q3450 CPO256115,200800727214418,43218,43236,86414,745.614,745.61
CoreQuantum-X800-Q3450 CPO128115,200800144·14418,432018,43214,745.60·

Transceivers

6
CN
 Network Layer
Transceiver / CablePart Name / Model
Total Units#
Units per SW/GPU#
Unit BWGbit/s
Lanes#
BW per LaneGbit/s
Agg. BWTbit/s
XPU NodesNvidia LinkX 800G DR418,43218,432800420014,745.6
Leaf
DownlinkNvidia LinkX 1.6T DR8 (SiPho)0361,60082000
UplinkNvidia LinkX 1.6T DR8 (SiPho)0361,60082000
Spine
DownlinkNvidia LinkX 1.6T DR8 (SiPho)0361,60082000
UplinkNvidia LinkX 1.6T DR8 (SiPho)0361,60082000
Core
DownlinkNvidia LinkX 1.6T DR8 (SiPho)0721,60082000
Uplink·······
Super-Core

Cables

6
CB
 Network Layer
Cable/ FiberType
Total Units#
Units per Transceiver#
Unit BWGbit/s
Lane Count#
SerDes BWGbit/s
XPU NodesNvidia LinkX 800G DR4 Single Mode18,43218004200
Leaf
DownlinkAlready counted above·····
UplinkNvidia LinkX 800G DR4 Single Mode18,43278004200
Spine
DownlinkAlready counted above·····
UplinkNvidia LinkX 800G DR4 Single Mode18,43278004200
Core
DownlinkAlready counted above·····
Uplink······
Super-Core

Backend Parts Summary

4
ItemQty/ClusterQty/ServerAttach/XPU
Nvidia LinkX 800G DR418,4328.001.00
Nvidia LinkX 800G DR4 Single Mode55,29624.003.00
ConnectX-9 NIC - 800G18,4328.001.00
Quantum-X800-Q3450 CPO6400.280.03

Frontend network

11 rows
Assigned blockDefault
R200 - HGX NVL8 - SN6600 - Generic
FrontendXPU: R200 HGX NVL811 linesshared by 4 SKUs

Converged Frontend + Storage Fabric

11
LayerPart / ModelUnitsAttach / XPU
·Spectrum-6 102.4T x1600 (SN6600)2210.0120
·Spectrum-4 25.6T (SN5400)10.0000
·Spectrum-3 12.8T (SN4700)330.0018
·Spectrum-2 1GbE (SN2201)2710.0147
·Nvidia LinkX 1.6T DR8 (SiPho)10,7040.5807
·Nvidia LinkX 800G DR410,6480.5777
·Nvidia LinkX 200G SR44,7250.2563
·Nvidia LinkX 800G Multimode14,6490.7947
·Nvidia LinkX 400G Multimode750.0041
·Nvidia LinkX 200G Multimode2,1050.1142
·RJ45 Cables12,9900.7048

Frontend Parts Summary

11
ItemQty/ClusterQty/ServerAttach/XPU
Spectrum-6 102.4T x1600 (SN6600)22100.0120
Spectrum-4 25.6T (SN5400)100.0001
Spectrum-3 12.8T (SN4700)3300.0018
Spectrum-2 1GbE (SN2201)27100.0147
Nvidia LinkX 1.6T DR8 (SiPho)10,70450.5807
Nvidia LinkX 800G DR410,64850.5777
Nvidia LinkX 200G SR44,72520.2563
Nvidia LinkX 800G Multimode14,64960.7947
Nvidia LinkX 400G Multimode7500.0041
Nvidia LinkX 200G Multimode2,10510.1142
RJ45 Cables12,99060.7048

Compute Tray Networking Content

4 rows

Networking components inside the compute tray — accelerators, board-to-board connectors, retimers, and their per-tray bandwidth.

Assigned blockDefault
R200 - HGX NVL8 - Generic
Compute TrayXPU: R200 HGX NVL84 linesshared by 4 SKUs
Tray layerPart / ModelUnits per Tray
Unit BWGb/s
Lanes
Lane BWGb/s
Per switch
XPUs per TrayRubin 2004····
PCIe 6.0 Connector (Male)NV Paladin Board to Board 32 Pin 4p8c (Male)2512···
PCIe 6.0 Connector (Male)NV Paladin Board to Board 64 Pin 4p16c (Male)81,024···
PCIe 6.0 Connector (Female)NV Paladin Board to Board 32 Pin 4p8c (Female)4512···
PCIe 6.0 Connector (Female)NV Paladin Board to Board 64 Pin 4p16c (Female)161,024···
PCIe 6.0 Connector (Male)NV Paladin Board to Board 32 Pin 4p8c (Male)2512···
PCIe 6.0 Connector (Male)NV Paladin Board to Board 64 Pin 4p16c (Male)81,024···
Notes
  • PCIe 6.0 Connector (Male) · NV Paladin Board to Board 32 Pin 4p8c (Male) — 2 pins = 1DP
  • PCIe 6.0 Connector (Male) · NV Paladin Board to Board 64 Pin 4p16c (Male) — 2DP = 1Lane

Compute Tray Parts Summary

4
ItemQty/ClusterQty/ServerAttach/XPU
NV Paladin Board to Board 32 Pin 4p8c (Male)18,4328.001.00
NV Paladin Board to Board 64 Pin 4p16c (Male)73,72832.004.00
NV Paladin Board to Board 32 Pin 4p8c (Female)18,4328.001.00
NV Paladin Board to Board 64 Pin 4p16c (Female)73,72832.004.00