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Neocloud Giant 10368 B300 CX-8 Neocloud Giant Infiniband Cluster Configuration

NG-B300-IB-8R

Neocloud Giant · B300 · CX-8

Rack type
NVL8
Cluster / location
Default B300
Buyer profile
Neocloud Giant
Networking type
Infiniband
Number of XPUs
10,368
NIC used
CX-8
NICs / XPU
1
Scale-out BW / XPU
800G
XPU / server
8

Scale-up network

1 rows
Assigned blockDefault
B300 - NVL8
Scale-UpXPU: B300 NVL81 lineshared by 5 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·87,20018400
Scale-Up World Size·857,600··

Switches

2
SW
Scale-Up Network LayerPart / Model
Units#
Unit BWGbit/s uni-d
Port Count#
Port BWGbit/s uni-d
per SwitchNvidia NVSwitch 5.0 (NVLink 5)128,80072400
Scale-Up Switch TotalNvidia NVSwitch 5.0 (NVLink 5)257,60072·

Scale-Up Parts Summary

1
ItemQty/ClusterQty/ServerAttach/XPU
Nvidia NVSwitch 5.0 (NVLink 5)2,5922.000.25

Backend network

5 rows
Assigned blockDefault
B300 - NVL8 - CX9 - 2L - IB - X800-Q3400-RA - Generic
BackendXPU: B300 NVL85 linesshared by 1 SKU

Backend Units are based on the cluster size (10,368 XPUs).

Switches

4
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·10,3688001,60005,1845,18405,1845,18408,294.4·
NICs per NodeConnectX-9 NIC - 800G8800100··8······
LeafQuantum-X800-Q3400-RA (Air Cooled)144115,200800727214410,36810,36820,7368,294.48,294.41
SpineQuantum-X800-Q3400-RA (Air Cooled)72115,20080072721445,1845,18410,3684,147.24,147.21

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 DR410,36810,3681,600820016,588.8
Leaf
DownlinkNvidia LinkX 1.6T DR8 (SiPho)5,184361,60082008,294.4
UplinkNvidia LinkX 1.6T DR8 (SiPho)5,184361,60082008,294.4
Spine
DownlinkNvidia LinkX 1.6T DR8 (SiPho)2,592361,60082004,147.2
UplinkNvidia LinkX 1.6T DR8 (SiPho)2,592361,60082004,147.2
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 Mode20,73628004200
Leaf
DownlinkAlready counted above·····
UplinkNvidia LinkX 800G DR4 Single Mode10,36828004200
Spine
DownlinkAlready counted above·····
UplinkNvidia LinkX 800G DR4 Single Mode5,18428004200
Core
DownlinkNvidia LinkX 800G DR4 Single Mode078004200
Uplink······
Super-Core

Backend Parts Summary

5
ItemQty/ClusterQty/ServerAttach/XPU
Nvidia LinkX 800G DR410,3688.001.00
Nvidia LinkX 800G DR4 Single Mode36,28828.003.50
Nvidia LinkX 1.6T DR8 (SiPho)15,55212.001.50
ConnectX-9 NIC - 800G10,3688.001.00
Quantum-X800-Q3400-RA (Air Cooled)2160.170.02

Frontend network

11 rows
Assigned blockDefault
B300 - NVL8 - SN5600 - Generic
FrontendXPU: B300 NVL811 linesshared by 3 SKUs

Converged Frontend + Storage Fabric

11
LayerPart / ModelUnitsAttach / XPU
·Spectrum-4 51.2T (SN5600)1240.0120
·Spectrum-3 12.8T (SN4700)10.0000
·Spectrum-2 6.4T (SN3700)190.0018
·Spectrum-2 1GbE (SN2201)1520.0147
·Nvidia LinkX 800G SR86,0210.5807
·Nvidia LinkX 400G SR45,9890.5777
·Nvidia LinkX 100G SR4 QSFP282,6580.2563
·Nvidia LinkX 800G Multimode8,2400.7947
·Nvidia LinkX 400G Multimode420.0041
·Nvidia LinkX 100G Multimode1,1840.1142
·RJ45 Cables7,3070.7048

Frontend Parts Summary

11
ItemQty/ClusterQty/ServerAttach/XPU
Spectrum-4 51.2T (SN5600)78710.0759
Spectrum-3 12.8T (SN4700)300.0003
Spectrum-2 6.4T (SN3700)11700.0113
Spectrum-2 1GbE (SN2201)96210.0928
Nvidia LinkX 800G SR838,057293.6706
Nvidia LinkX 400G SR437,859293.6515
Nvidia LinkX 100G SR4 QSFP2816,800131.6204
Nvidia LinkX 800G Multimode52,084405.0236
Nvidia LinkX 400G Multimode26700.0257
Nvidia LinkX 100G Multimode7,48360.7218
RJ45 Cables46,187364.4548

Compute Tray Networking Content

1 rows

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

Assigned blockDefault
B300 - NVL8 - Generic
Compute TrayXPU: B300 NVL81 lineshared by 4 SKUs
Tray layerPart / ModelUnits per Tray
Unit BWGb/s
Lanes
Lane BWGb/s
Per switch
XPUs per TrayBlackwell 3008····
Flyover from NIC to OSFPNV DensiLink OverPass to OSFP Cage8····

Compute Tray Parts Summary

1
ItemQty/ClusterQty/ServerAttach/XPU
NV DensiLink OverPass to OSFP Cage10,3688.001.00