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Oracle 65536 B200 CX-7 Hyperscaler Infiniband Cluster Configuration

OCI-B200-IB-8R-3L

Oracle · B200 · CX-7

Rack type
NVL8
Cluster / location
Default B200
Buyer profile
Hyperscaler
Networking type
Infiniband
Number of XPUs
65,536
NIC used
CX-7
NICs / XPU
1
Scale-out BW / XPU
400G
XPU / server
8

Scale-up network

1 rows
Assigned blockDefault
B200 - NVL8
Scale-UpXPU: B200 NVL81 lineshared by 6 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·87,20018400
Scale-Up World Size·857,600··

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 TotalNvidia NVSwitch 5.0 (NVLink 5)257,60072·

Scale-Up Parts Summary

1
ItemQty/ClusterQty/ServerAttach/XPU
Nvidia NVSwitch 5.0 (NVLink 5)16,3842.000.25

Backend network

6 rows
Assigned blockDefault
B200 - NVL8 - CX7 - 3L - IB - QM9700 - Generic
BackendXPU: B200 NVL86 linesshared by 3 SKUs

Backend Units are based on the cluster size (65,536 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·65,536400400065,53665,536065,53665,536026,214.4·
NICs per NodeConnectX-7 NIC - 400G8400400··8······
LeafQuantum-2 InfiniBand (QM9700)2,04825,60080016163232,76832,76865,53626,214.426,214.41
SpineQuantum-2 InfiniBand (QM9700)2,04825,60080016163232,76832,76865,53626,214.426,214.41
CoreQuantum-2 InfiniBand (QM9700)1,02425,6008003203232,768032,76826,214.40·

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 NodesNvidia LinkX 400G DR465,53665,536400410026,214.4
Leaf
DownlinkNvidia LinkX 800G DR832,76816800810026,214.4
UplinkNvidia LinkX 800G DR832,76816800810026,214.4
Spine
DownlinkNvidia LinkX 800G DR832,76816800810026,214.4
UplinkNvidia LinkX 800G DR832,76816800810026,214.4
Core
DownlinkNvidia LinkX 800G DR832,76832800810026,214.4
Uplink·······
Super-Core

Cables

6
CB
 Network Layer
Cable/ FiberType
Total Units#
Units per Transceiver#
Unit BWGbit/s
Lane Count#
SerDes BWGbit/s
XPU NodesNvidia LinkX 400G Single Mode65,53614004100
Leaf
DownlinkAlready counted above·····
UplinkNvidia LinkX 800G Single Mode32,76818008100
Spine
DownlinkAlready counted above·····
UplinkNvidia LinkX 800G Single Mode32,76818008100
Core
DownlinkAlready counted above·····
Uplink······
Super-Core

Backend Parts Summary

6
ItemQty/ClusterQty/ServerAttach/XPU
Nvidia LinkX 400G DR465,5368.001.00
Nvidia LinkX 400G Single Mode65,5368.001.00
Nvidia LinkX 800G DR8163,84020.002.50
Nvidia LinkX 800G Single Mode65,5368.001.00
ConnectX-7 NIC - 400G65,5368.001.00
Quantum-2 InfiniBand (QM9700)5,1200.630.08

Frontend network

11 rows
Assigned blockDefault
B200 - NVL8 - SN5600 - Generic
FrontendXPU: B200 NVL811 linesshared by 4 SKUs

Converged Frontend + Storage Fabric

11
LayerPart / ModelUnitsAttach / XPU
·Spectrum-4 51.2T (SN5600)7870.0120
·Spectrum-3 12.8T (SN4700)30.0000
·Spectrum-2 6.4T (SN3700)1170.0018
·Spectrum-2 1GbE (SN2201)9620.0147
·Nvidia LinkX 800G SR838,0570.5807
·Nvidia LinkX 400G SR437,8590.5777
·Nvidia LinkX 100G SR4 QSFP2816,8000.2563
·Nvidia LinkX 800G Multimode52,0840.7947
·Nvidia LinkX 400G Multimode2670.0041
·Nvidia LinkX 100G Multimode7,4830.1142
·RJ45 Cables46,1870.7048

Frontend Parts Summary

11
ItemQty/ClusterQty/ServerAttach/XPU
Spectrum-4 51.2T (SN5600)78700.0120
Spectrum-3 12.8T (SN4700)300.0001
Spectrum-2 6.4T (SN3700)11700.0018
Spectrum-2 1GbE (SN2201)96200.0147
Nvidia LinkX 800G SR838,05750.5807
Nvidia LinkX 400G SR437,85950.5777
Nvidia LinkX 100G SR4 QSFP2816,80020.2563
Nvidia LinkX 800G Multimode52,08460.7947
Nvidia LinkX 400G Multimode26700.0041
Nvidia LinkX 100G Multimode7,48310.1142
RJ45 Cables46,18760.7048

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
B200 - NVL8 - Generic
Compute TrayXPU: B200 NVL81 lineshared by 5 SKUs
Tray layerPart / ModelUnits per Tray
Unit BWGb/s
Lanes
Lane BWGb/s
Per switch
XPUs per TrayBlackwell 2008····
B200 ServerNVLink PCIe 5.0 x16 Retimer8512···

Compute Tray Parts Summary

1
ItemQty/ClusterQty/ServerAttach/XPU
NVLink PCIe 5.0 x16 Retimer65,5368.001.00