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Meta 122880 H100 CX-7 Hyperscaler Ethernet Cluster Configuration

META-H100-CX7-Eth-ARWB-129K

Meta · H100 · CX-7

Rack type
NVL8
Cluster / location
129k Ethernet Cluster
Buyer profile
Hyperscaler
Networking type
Ethernet
Number of XPUs
122,880
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)61,4404.000.50

Backend network

9 rows
Assigned blockDefault
H100 - NVL8 - CX7 - 3L - ETH - Minipack-2 OCP Rack - META
BackendXPU: H100 NVL89 linesshared by 1 SKU

Backend Units are based on the cluster size (122,880 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·122,8804004000122,880122,8800122,880122,880049,152·
NICs per NodeConnectX-7 NIC - 400G8400400··1······
LeafMinipack-2 OCP Rack 25.6T7,68025,600400161864122,880138,240491,52049,15255,2960.889
SpineArista 115.2T Modular Chassis (7804R4)720115,20040019276288138,24054,720207,36055,29621,8882.526
CoreArista 115.2T Modular Chassis (7804R4)380115,20040014414428854,72054,720109,44021,88821,8881

Transceivers

7
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 DAC122,880122,880400410049,152
Leaf
DownlinkGeneric 400G DR4122,88016400410049,152
UplinkGeneric 400G DR4138,24018400410055,296
Spine
DownlinkGeneric 800G DR869,12096800810055,296
UplinkGeneric 800G DR827,36038800810021,888
Core
DownlinkGeneric 800G DR827,36072800810021,888
UplinkGeneric 800G 2xFR427,36072800810021,888
Super-Core

Cables

7
CB
 Network Layer
Cable/ FiberType
Total Units#
Units per Transceiver#
Unit BWGbit/s
Lane Count#
SerDes BWGbit/s
XPU NodesAlready counted on left·····
Leaf
DownlinkAlready counted above·····
UplinkGeneric 400G Single Mode138,24014004100
Spine
DownlinkAlready counted above·····
UplinkGeneric 800G Single Mode27,36018008100
Core
DownlinkAlready counted above·····
Uplink·27,36018008100
Super-Core

Backend Parts Summary

9
ItemQty/ClusterQty/ServerAttach/XPU
Generic 400G DAC122,8808.001.00
Generic 400G DR4261,12017.002.13
Generic 400G Single Mode138,2409.001.13
ConnectX-7 NIC - 400G122,8808.001.00
Generic 800G DR8123,8408.061.01
Minipack-2 OCP Rack 25.6T7,6800.500.06
Generic 800G Single Mode27,3601.780.22
Arista 115.2T Modular Chassis (7804R4)1,1000.070.01
Generic 800G 2xFR427,3601.780.22

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 51.2T1,4750.0120
·Minipack-1 OCP Rack 12.8T60.0000
·WhiteBox Tomahawk 2 6.4T2190.0018
·Generic 1GbE Ethernet1,8040.0147
·Generic 800G DR871,3570.5807
·Generic 400G DR470,9850.5777
·Generic 100G DR4 QSFP2831,5000.2563
·Generic 800G Single Mode97,6580.7947
·Generic 400G Single Mode5000.0041
·Generic 100G Single Mode14,0310.1142
·RJ45 Cables86,6010.7048

Frontend Parts Summary

11
ItemQty/ClusterQty/ServerAttach/XPU
Minipack-3 OCP Rack 51.2T19700.0016
Minipack-1 OCP Rack 12.8T100.0000
WhiteBox Tomahawk 2 6.4T2900.0002
Generic 1GbE Ethernet24100.0020
Generic 800G DR89,51410.0774
Generic 400G DR49,46510.0770
Generic 100G DR4 QSFP284,20000.0342
Generic 800G Single Mode13,02110.1060
Generic 400G Single Mode6700.0005
Generic 100G Single Mode1,87100.0152
RJ45 Cables11,54710.0940

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 Retimer122,8808.001.00