NIC光网卡.pdf

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1、OCP Global Summit October 18,2023|San Jose,CADavid Piehler,Dell TechnologiesNIC PhotoNICsSYM-ContentThe NIC gateway between the network and compute resourcesOCP 3.0Home for silicon photonics/co-packaged optics(CPO)?MaybeLinear pluggable optics(LPO)at home in the NIC?LikelyThe NIC of tomorrowAgendaSY

2、M-ContentShowing NIC placement(things can re-rearranged)OIF taxonomy ComputeIOCompute MemoryComputeComputeNetwork Interface CardNetworkComputeEthernetPCIefocus of the remaining talks in this sessionServer TrackSERVEROCP NIC in 2023:800G,PCIe Gen6&Test IntegrationDamien Chong,Technical Lead,MetaHemal

3、 Shah,Distinguished Engineer and Architect,BroadcomJason Rock,Distinguished Member Technical Staff,Dell TechnologiesI cant give a NIC talk at OCP and not mention OCP 3.0.The Open Compute Project has standardized the NIC form factor,a huge benefit for the industryOCP NIC rev 3.0 is all over this even

4、t.OCP 3.0(NIC)Thursday 19 October,2:40pm-3:00pm|SJCC-Concourse Level-220BPassive copper direct attach cables(DACs)have been the most used for ToR switch-to-server NIC connectivity.Limited to 3 4(?)meters at 100G per lane.Length also depends on cable gauge(thickness)Enough for one rack of servers.Low

5、est cost.Active electrical(retimed)copper cables(AECs)can go a little farther.7 meters at(8 100G)OSFP112 with 26 AWG cable.Lower cost.Optics,either active optical cable(AOCs)or transceivers are needed for anything longer.Todays NICToRswitchserversNIC=a home for CPO?From:Moray McLaren(Microsoft)Optic

6、a Industry Summit,26 October 2022Recall:#1 CPO solves a power dissipation problem associated with chip-to-module distance.also CPO may have other benefits(cost)A few years ago,I thought:Unlikley,as CPO economics pay off when you have to integrate many lanes.NICs need at most a few lanes.Today,NIC ba