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Neoclouds/AI Lab/SovAI 9216 Ascend 910C NIC - 400G Hyperscaler Infiniband Cluster Configuration

CN-Ascend 910C-2L

Chinese Hyperscaler · Ascend 910C · NIC - 400G

Rack type
Cluster / location
Default Ascend 910C 2-Layer Cluster
Buyer profile
China Cloud
Networking type
Infiniband
Number of XPUs
9,216
NIC used
NIC - 400G
NICs / XPU
1
Scale-out BW / XPU
400G
XPU / server
384

Scale-up network

1 rows
Assigned blockDefault
Ascend 910C
Scale-UpXPU: Ascend 910C1 lineshared by 1 SKU

Scale-up Units are based on the scale-up world size (384 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·3842,8007400
Scale-Up World Size·3841,075,200··

Switches

2
SW
Scale-Up Network LayerPart / Model
Units#
Unit BWGbit/s uni-d
Port Count#
Port BWGbit/s uni-d
per SwitchCloudEngine 16800·307,200672400
Scale-Up Switch Total·41,228,800··
Notes
  • per Switch · CloudEngine 16800 — >>672/768 ports

Scale-Up Parts Summary

1
ItemQty/ClusterQty/ServerAttach/XPU
CloudEngine 16800964.000.01

Backend network

4 rows
Assigned blockDefault
Ascend 910C - 400G NIC - 2L - ETH - Huawei 768P - Generic
BackendXPU: Ascend 910C4 linesshared by 1 SKU

Backend Units are based on the cluster size (9,216 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·9,21640040009,2169,21609,2169,21603,686.4·
NICs per NodeNIC - 400G8400400··8······
Leaf768-Port Modular Switch for Huawei24307,2004003843847689,2169,21618,4323,686.43,686.41
Spine768-Port Modular Switch for Huawei12307,20040076807689,21609,2163,686.40·

Transceivers

5
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 SR89,2169,2164008503,686.4
Leaf
DownlinkGeneric 400G SR89,21638440041003,686.4
UplinkGeneric 400G SR89,21638440041003,686.4
Spine
DownlinkGeneric 400G SR89,21676840041003,686.4
Uplink·······
Core
Downlink·······
Uplink·······
Super-Core

Cables

5
CB
 Network Layer
Cable/ FiberType
Total Units#
Units per Transceiver#
Unit BWGbit/s
Lane Count#
SerDes BWGbit/s
XPU NodesGeneric 400G Multimode9,21614004100
Leaf
DownlinkAlready counted above·····
UplinkGeneric 400G Multimode9,21614004100
Spine
DownlinkAlready counted above·····
UplinkAlready counted above·····
Core
Downlink······
Uplink······
Super-Core

Backend Parts Summary

4
ItemQty/ClusterQty/ServerAttach/XPU
Generic 400G SR836,8641,536.004.00
Generic 400G Multimode18,432768.002.00
NIC - 400G9,216384.001.00
768-Port Modular Switch for Huawei361.500.00

Frontend network

11 rows
Assigned blockDefault
Ascend 910C - BlackBox TH5 - Generic
FrontendXPU: Ascend 910C11 linesshared by 1 SKU

Converged Frontend + Storage Fabric

11
LayerPart / ModelUnitsAttach / XPU
·BlackBox Tomahawk 5 51.2T1110.0120
·BlackBox Tomahawk 3 12.8T00.0000
·BlackBox Tomahawk 2 6.4T160.0018
·BlackBox Tomahawk 1GbE Ethernet1350.0147
·Generic 800G SR85,3520.5807
·Generic 400G SR45,3240.5777
·Generic 100G SR4 QSFP282,3630.2563
·Generic 800G Multimode7,3240.7947
·Generic 400G Multimode370.0041
·Generic 100G Multimode1,0520.1142
·RJ45 Cables6,4950.7048

Frontend Parts Summary

11
ItemQty/ClusterQty/ServerAttach/XPU
BlackBox Tomahawk 5 51.2T11150.0120
BlackBox Tomahawk 3 12.8T000.0001
BlackBox Tomahawk 2 6.4T1610.0018
BlackBox Tomahawk 1GbE Ethernet13560.0147
Generic 800G SR85,3522230.5807
Generic 400G SR45,3242220.5777
Generic 100G SR4 QSFP282,363980.2563
Generic 800G Multimode7,3243050.7947
Generic 400G Multimode3720.0041
Generic 100G Multimode1,052440.1142
RJ45 Cables6,4952710.7048

Compute Tray Networking Content

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

Assigned blockDefault
Ascend 910C - Generic
Compute TrayXPU: Ascend 910C0 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