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Meta 18144 GB300 CX-8 Hyperscaler DSF Ethernet Cluster Configuration

META-GB300-CX8-DSF-AR-18k

Meta · GB300 · CX-8

Rack type
NVL72
Cluster / location
All Other Clusters
Buyer profile
Hyperscaler
Networking type
DSF Ethernet
Number of XPUs
18,144
NIC used
CX-8
NICs / XPU
1
Scale-out BW / XPU
800G
XPU / server
72

Scale-up network

8 rows
Assigned blockDefault
GB300 - NVL72
Scale-UpXPU: GB300 NVL728 linesshared by 22 SKUs

Scale-up Units are based on the scale-up world size (72 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·47,20018400
Scale-Up World Size·72518,400··

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 Total·18518,400··

Connections & cabling

8
CN
Scale-Up Network LayerPart / Model
Units#
BW / PortGbit/s uni-d
Unit DP#
DP / Port#
Total DPs#
BW / ConnectorCable / Model
Cable Units#
Ultrapass to SwitchNV 2 UltraPass OverPass 144 DP 224Gb/s3640014445,18414,400··
Male ConnectorsNV Paladin HD2 224Gb/s 144 DP (Male)3640014445,18414,400Already Counted Below·
Female ConnectorsNV Paladin HD2 224Gb/s 144 DP (Female)3640014445,18414,400Already Counted Below·
Switch Total** Two connectors per switch·····28,800··
Male ConnectorsNV Paladin HD2 224Gb/s 72 DP (Male)724007245,1847,200Already Counted Below·
Female ConnectorsNV Paladin HD2 224Gb/s 72 DP (Female)724007245,1847,200NV 224Gb/s SkewClear EXD Gen 2 Cable5,184
XPU Total** One connector per GPU·····7,200··
·NVL Spine Chassis (NvLink 5)2·······

Scale-Up Parts Summary

8
ItemQty/ClusterQty/ServerAttach/XPU
Nvidia NVSwitch 5.0 (NVLink 5)4,53618.000.25
NV 2 UltraPass OverPass 144 DP 224Gb/s9,07236.000.50
NV Paladin HD2 224Gb/s 144 DP (Male)9,07236.000.50
NV Paladin HD2 224Gb/s 144 DP (Female)9,07236.000.50
NV Paladin HD2 224Gb/s 72 DP (Male)18,14472.001.00
NV Paladin HD2 224Gb/s 72 DP (Female)18,14472.001.00
NV 224Gb/s SkewClear EXD Gen 2 Cable1,306,3685,184.0072.00
NVL Spine Chassis (NvLink 5)5042.000.03

Backend network

6 rows
Assigned blockDefault
GB300 - NVL72 - CX8 - 3L - ETH - 7700R4C - META
BackendXPU: GB300 NVL726 linesshared by 1 SKU

Backend Units are based on the cluster size (18,144 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·18,144800400036,28836,288036,28836,288014,515.2·
NICs per NodeConnectX-8 NIC - 800G4800100··8······
Leaf (RDSW)Arista 14.4T DSF Leaf (7700R4C)1,00830,40040036407636,28840,32076,60814,515.216,1280.9
Spine (FDSW)Arista 102.4T DSF Spine (7720R4)320102,40040012612825640,32040,96081,92016,12816,3840.984
Core (SDSW)Arista 102.4T DSF Spine (7720R4)256102,400400160025640,960065,53616,3840·

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 NodesGeneric 800G DR818,14418,144800810014,515.2
Leaf
DownlinkGeneric 800G DR818,14418800810014,515.2
UplinkGeneric 800G DR820,16020800810016,128
Spine
DownlinkGeneric 800G DR820,16063800810016,128
UplinkGeneric 800G DR820,48064800810016,384
Core
DownlinkGeneric 800G DR820,48080800810016,384
Uplink·······
Super-Core

Cables

6
CB
 Network Layer
Cable/ FiberType
Total Units#
Units per Transceiver#
Unit BWGbit/s
Lane Count#
SerDes BWGbit/s
XPU NodesGeneric 800G Single Mode18,14418004200
Leaf
DownlinkAlready counted above·····
UplinkGeneric 400G Single Mode40,32024004100
Spine
DownlinkAlready counted above·····
UplinkGeneric 400G Single Mode40,96024004100
Core
DownlinkAlready counted above·····
Uplink······
Super-Core

Backend Parts Summary

6
ItemQty/ClusterQty/ServerAttach/XPU
Generic 800G DR8117,568466.546.48
Generic 800G Single Mode18,14472.001.00
Generic 400G Single Mode81,280322.544.48
ConnectX-8 NIC - 800G18,14472.001.00
Arista 14.4T DSF Leaf (7700R4C)1,0084.000.06
Arista 102.4T DSF Spine (7720R4)5762.290.03

Frontend network

11 rows
Assigned blockDefault
GB300 - NVL72 - Minipack-3 - META
FrontendXPU: GB300 NVL7211 linesshared by 4 SKUs

Converged Frontend + Storage Fabric

11
LayerPart / ModelUnitsAttach / XPU
·Minipack-3 OCP Rack 51.2T3270.0180
·Minipack-1 OCP Rack 12.8T10.0000
·WhiteBox Tomahawk 2 6.4T320.0018
·Generic 1GbE Ethernet2660.0147
·Generic 800G DR810,5360.5807
·Generic 400G DR410,4810.5777
·Generic 100G DR4 QSFP284,6510.2563
·Generic 800G Single Mode14,4200.7947
·Generic 400G Single Mode740.0041
·Generic 100G Single Mode2,0720.1142
·RJ45 Cables12,7870.7048

Frontend Parts Summary

11
ItemQty/ClusterQty/ServerAttach/XPU
Minipack-3 OCP Rack 51.2T32710.0180
Minipack-1 OCP Rack 12.8T100.0001
WhiteBox Tomahawk 2 6.4T3200.0018
Generic 1GbE Ethernet26610.0147
Generic 800G DR810,536420.5807
Generic 400G DR410,481420.5777
Generic 100G DR4 QSFP284,651180.2563
Generic 800G Single Mode14,420570.7947
Generic 400G Single Mode7400.0041
Generic 100G Single Mode2,07280.1142
RJ45 Cables12,787510.7048

Compute Tray Networking Content

3 rows

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

Assigned blockDefault
GB300 - NVL72 - Generic
Compute TrayXPU: GB300 NVL723 linesshared by 20 SKUs
Tray layerPart / ModelUnits per Tray
Unit BWGb/s
Lanes
Lane BWGb/s
Per switch
XPUs per TrayBlackwell 3004····
Bianca BoardNV MCIO PCIe x16 Connector2····
Bianca BoardNV MCIO PCIe x16 Cable2····
Mezz Board to OSFPNV DensiLink OverPass to OSFP Cage4····

Compute Tray Parts Summary

3
ItemQty/ClusterQty/ServerAttach/XPU
NV MCIO PCIe x16 Connector9,07236.000.50
NV MCIO PCIe x16 Cable9,07236.000.50
NV DensiLink OverPass to OSFP Cage18,14472.001.00