通过节能互连技术推动人工智能革命.pdf

1、 Ciena Corporation 2025.All rights reserved.Proprietary Information.Enabling the AI Revolution Enabling the AI Revolution Through EnergyThrough Energy-Efficient Efficient Interconnect TechnologiesInterconnect TechnologiesBilal RiazSr Director,Product Line Management Ciena Corporation 2025.All rights

2、 reserved.Proprietary Information.Scaling Strategies for AI ClustersAI/ML cluster driving the exponential growth in data center traffic and bandwidthScale-Up:224G-448G per lane SerDes,higher symbol rates,better packaging and connectors,higher shoreline densityScale-Out:224G-448G per lane optical Add

3、 more parallel lanes(8,16,32 lanes per module)Scale-Across:Build large Coherent fabrics with predictable latency and fault-toleranceSource:International Energy Agency Ciena Corporation 2025.All rights reserved.Proprietary Information.Copper or Light?Choosing the Right Highway for AICopper:cheap,low

4、power,short reachLimited with 100Gbps+per lane unless active technology used(e.g.re-timers)Optical:long reach,high bandwidth,higher cost/powerMany different architectural approaches with CPO,NPO,LPO,etc.AI workloads are pushing copper beyond limits.Gradual transition to optical for ultra-high speeds

5、 and reach We have already entered the terabit and petabit era Ongoing evolution of technology in and around the data center,leveraging adjacency Ciena Corporation 2025.All rights reserved.Proprietary Information.Cracking the GPU Beachfront(I/O)BottleneckPCBSubstrate TIA/DRV Electrical ChannelLinear

6、 Pluggable Optics PCBSubstrate Optical module Elec ChannelFiber portPCBSubstrateDSP Electrical ChannelPluggable optical module TIA/DRV PCBSubstrate ChipFiber portPCBSubstrateTx DSP Electrical ChannelPluggable Receive OpticsTIA/DRV Optical module Linear Pluggable(LPO)Power:10w(6.5 pJ/bit)Fully Retime