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Meta 24576 H100 CX-7 Hyperscaler Ethernet Cluster Configuration

META-H100-CX7-Eth-ARWB-24K

Meta · H100 · CX-7

Rack type
NVL8
Cluster / location
24k RoCE Ethernet Cluster
Buyer profile
Hyperscaler
Networking type
Ethernet
Number of XPUs
24,576
NIC used
CX-7
NICs / XPU
1
Scale-out BW / XPU
400G
XPU / server
8

Scale-up network

1 rows
Assigned blockDefault
H100 - NVL8
Scale-UpXPU: H100 NVL81 lineshared by 17 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·83,600··
Scale-Up World Size·828,800··

Switches

5
SW
Scale-Up Network LayerPart / Model
Units#
Unit BWGbit/s uni-d
Port Count#
Port BWGbit/s uni-d
Scale-Up Switch ANvidia NVSwitch 3.0 (NVLink 4)18,00020400
Scale-Up Switch BNvidia NVSwitch 3.0 (NVLink 4)16,40016400
Scale-Up Switch CNvidia NVSwitch 3.0 (NVLink 4)16,40016400
Scale-Up Switch DNvidia NVSwitch 3.0 (NVLink 4)18,00020400
Scale-Up Switch TotalNvidia NVSwitch 3.0 (NVLink 4)428,80072·

Scale-Up Parts Summary

1
ItemQty/ClusterQty/ServerAttach/XPU
Nvidia NVSwitch 3.0 (NVLink 4)12,2884.000.50

Backend network

6 rows
Assigned blockDefault
H100 - NVL8 - CX7 - 3L - ETH - Minipack-2 OCP Rack - META - 2
BackendXPU: H100 NVL86 linesshared by 1 SKU

Backend Units are based on the cluster size (24,576 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·24,576400400024,57624,576024,57624,57609,830.4·
NICs per NodeConnectX-7 NIC - 400G4400400··1······
LeafMinipack-2 OCP Rack 25.6T1,53625,60040016186424,57627,64898,3049,830.411,059.20.889
SpineArista 115.2T Modular Chassis (7804R4)144115,2004001922828827,6484,03241,47211,059.21,612.86.857
CoreArista 115.2T Modular Chassis (7804R4)28115,20040014402884,03208,0641,612.80·

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 400G DR424,57624,5764008509,830.4
Leaf
DownlinkGeneric 800G DR812,288880081009,830.4
UplinkGeneric 800G DR813,8249800810011,059.2
Spine
DownlinkGeneric 800G DR813,82496800810011,059.2
UplinkGeneric 800G DR82,0161480081001,612.8
Core
DownlinkGeneric 800G DR82,0167280081001,612.8
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 400G Single Mode24,57614004100
Leaf
DownlinkAlready counted above·····
UplinkGeneric 400G Single Mode27,64824004100
Spine
DownlinkAlready counted above·····
UplinkGeneric 400G Single Mode4,03224004100
Core
DownlinkAlready counted above·····
Uplink······
Super-Core

Backend Parts Summary

6
ItemQty/ClusterQty/ServerAttach/XPU
Generic 400G DR424,5768.001.00
Generic 400G Single Mode56,25618.312.29
Generic 800G DR843,96814.311.79
ConnectX-7 NIC - 400G24,5768.001.00
Minipack-2 OCP Rack 25.6T1,5360.500.06
Arista 115.2T Modular Chassis (7804R4)1720.060.01

Frontend network

11 rows
Assigned blockDefault
H100 - NVL8 - Minipack-3 - META
FrontendXPU: H100 NVL811 linesshared by 4 SKUs

Converged Frontend + Storage Fabric

11
LayerPart / ModelUnitsAttach / XPU
·Minipack-3 OCP Rack 51.2T2950.0120
·Minipack-1 OCP Rack 12.8T10.0000
·WhiteBox Tomahawk 2 6.4T440.0018
·Generic 1GbE Ethernet3610.0147
·Generic 800G DR814,2710.5807
·Generic 400G DR414,1970.5777
·Generic 100G DR4 QSFP286,3000.2563
·Generic 800G Single Mode19,5320.7947
·Generic 400G Single Mode1000.0041
·Generic 100G Single Mode2,8060.1142
·RJ45 Cables17,3200.7048

Frontend Parts Summary

11
ItemQty/ClusterQty/ServerAttach/XPU
Minipack-3 OCP Rack 51.2T19700.0080
Minipack-1 OCP Rack 12.8T100.0000
WhiteBox Tomahawk 2 6.4T2900.0012
Generic 1GbE Ethernet24100.0098
Generic 800G DR89,51430.3871
Generic 400G DR49,46530.3851
Generic 100G DR4 QSFP284,20010.1709
Generic 800G Single Mode13,02140.5298
Generic 400G Single Mode6700.0027
Generic 100G Single Mode1,87110.0761
RJ45 Cables11,54740.4698

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
H100 - NVL8 - Generic
Compute TrayXPU: H100 NVL81 lineshared by 16 SKUs
Tray layerPart / ModelUnits per Tray
Unit BWGb/s
Lanes
Lane BWGb/s
Per switch
XPUs per TrayHopper 1008····
H100 ServerNVLink PCIe 5.0 x16 Retimer8512···

Compute Tray Parts Summary

1
ItemQty/ClusterQty/ServerAttach/XPU
NVLink PCIe 5.0 x16 Retimer24,5768.001.00