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Meta 16384 MTIA Gen 4 Thor-3 800G NIC Hyperscaler Ethernet Cluster Configuration

META-MTIA Gen 4-800G-Eth-3L

Meta · MTIA Gen 4 · Thor-3 800G NIC

Rack type
—
Cluster / location
All Other Clusters
Buyer profile
Hyperscaler
Networking type
Ethernet
Number of XPUs
16,384
NIC used
Thor-3 800G NIC
NICs / XPU
1
Scale-out BW / XPU
800G
XPU / server
72

Scale-up network

7 rows
Assigned blockDefault
MTIA Gen 4
Scale-UpXPU: MTIA Gen 47 linesshared by 1 SKU

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·49,60048200
Scale-Up World Size·72691,200··

Switches

2
SW
Scale-Up Network LayerPart / Model
Units#
Unit BWGbit/s uni-d
Port Count#
Port BWGbit/s uni-d
per SwitchTomahawk 6 102.4T ASIC886,400432200
Scale-Up Switch Total·8691,200··

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 Switch2 UltraPass OverPass 144 DP 224Gb/s4820014446,9127,200··
Male ConnectorsPaladin HD2 224Gb/s 144 DP (Male)4820014426,91214,400Already Counted Below·
Female ConnectorsPaladin HD2 224Gb/s 144 DP (Female)4820014426,91214,400Already Counted Below·
Switch Total** Six connectors per switch·····86,400··
Male ConnectorsPaladin HD2 224Gb/s 96 DP (Male)722009626,9129,600Already Counted Below·
Female ConnectorsPaladin HD2 224Gb/s 96 DP (Female)722009626,9129,600224Gb/s SkewClear EXD Gen 2 Cable6,912
XPU Total** One connector per GPU·····9,600··
·MITA Santa Barbara Chassis1·······
Notes
  • XPUs per Node — 8x6x200G
  • per Switch · Tomahawk 6 102.4T ASIC — >> 80 Empty Ports per switch

Scale-Up Parts Summary

7
ItemQty/ClusterQty/ServerAttach/XPU
Tomahawk 6 102.4T ASIC1,8208.000.11
2 UltraPass OverPass 144 DP 224Gb/s10,92348.000.67
Paladin HD2 224Gb/s 144 DP (Male)10,92348.000.67
Paladin HD2 224Gb/s 144 DP (Female)10,92348.000.67
Paladin HD2 224Gb/s 96 DP (Male)16,38472.001.00
Paladin HD2 224Gb/s 96 DP (Female)16,38472.001.00
224Gb/s SkewClear EXD Gen 2 Cable1,572,8646,912.0096.00

Backend network

5 rows
Assigned blockDefault
MTIA Gen 4 - Thor3 - 3L - ETH - Minipack-3 OCP Rack - META
BackendXPU: MTIA Gen 45 linesshared by 1 SKU

Backend Units are based on the cluster size (16,384 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·16,384800800016,38416,384016,38416,384013,107.2·
NICs per NodeThor-3 800G NIC4800···8······
LeafMinipack-3 OCP Rack 51.2T51251,200400646412832,76832,76865,53613,107.213,107.21
SpineMinipack-3 OCP Rack 51.2T51251,200400646412832,76832,76865,53613,107.213,107.21
CoreMinipack-3 OCP Rack 51.2T25651,200400128·12832,768032,76813,107.20·

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 NodesNone - AECs are Used ->16,38416,384800810013,107.2
Leaf
DownlinkNone - AECs are Used ->16,38432800810013,107.2
UplinkGeneric 800G DR816,38432800810013,107.2
Spine
DownlinkGeneric 800G DR816,38432800810013,107.2
UplinkGeneric 800G DR816,38432800810013,107.2
Core
DownlinkGeneric 800G DR816,38464800810013,107.2
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 AEC16,38418008100
Leaf
DownlinkAlready counted above·····
UplinkGeneric 400G Single Mode32,76824004100
Spine
DownlinkAlready counted above·····
UplinkGeneric 400G Single Mode32,76824004100
Core
DownlinkAlready counted above·····
Uplink······
Super-Core

Backend Parts Summary

5
ItemQty/ClusterQty/ServerAttach/XPU
Generic 800G AEC16,38472.001.00
Generic 800G DR865,536288.004.00
Generic 400G Single Mode65,536288.004.00
Thor-3 800G NIC16,38472.001.00
Minipack-3 OCP Rack 51.2T1,2805.630.08

Frontend network

11 rows
Assigned blockDefault
MTIA Gen 4 - Minipack-3 - META
FrontendXPU: MTIA Gen 411 linesshared by 1 SKU

Converged Frontend + Storage Fabric

11
LayerPart / ModelUnitsAttach / XPU
·Minipack-3 OCP Rack 51.2T1970.0120
·Minipack-1 OCP Rack 12.8T10.0000
·WhiteBox Tomahawk 2 6.4T290.0018
·Generic 1GbE Ethernet2410.0147
·Generic 800G DR89,5140.5807
·Generic 400G DR49,4650.5777
·Generic 100G DR4 QSFP284,2000.2563
·Generic 800G Single Mode13,0210.7947
·Generic 400G Single Mode670.0041
·Generic 100G Single Mode1,8710.1142
·RJ45 Cables11,5470.7048

Frontend Parts Summary

11
ItemQty/ClusterQty/ServerAttach/XPU
Minipack-3 OCP Rack 51.2T19710.0120
Minipack-1 OCP Rack 12.8T100.0001
WhiteBox Tomahawk 2 6.4T2900.0018
Generic 1GbE Ethernet24110.0147
Generic 800G DR89,514420.5807
Generic 400G DR49,465420.5777
Generic 100G DR4 QSFP284,200180.2563
Generic 800G Single Mode13,021570.7947
Generic 400G Single Mode6700.0041
Generic 100G Single Mode1,87180.1142
RJ45 Cables11,547510.7048

Compute Tray Networking Content

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

Assigned blockDefault
MTIA Gen 4 - META
Compute TrayXPU: MTIA Gen 40 linesshared by 1 SKU
Tray layerPart / ModelUnits per Tray
Unit BWGb/s
Lanes
Lane BWGb/s
Per switch

Compute Tray Parts Summary

0
ItemQty/ClusterQty/ServerAttach/XPU