据TrendForce集邦咨询研究,以云端服务业者(CSP)导入现况来看,以Microsoft、Meta、AWS较为积极,预期2025年GB200方案合计出货量有机会达逾30,000柜,Google则可能倾向优先扩大自家TPU AI基础设施。Blackwell平台之所以备受市场期待,主要是有别于HGX或MGX单台AI服务器,改推整柜式型态,整合自家CPU、GPU、NVLink及InfiniBand等高速网通技术。其中,GB200又分为NVL36及NVL72,每柜分别搭载达36及72颗GPU,而NVL72将为NVIDIA主推组态,但因其设计较为复杂,估计2024年底将以NVL36先导入前期试练,以求快速进入市场(Time to Market)。
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一、SAE J1939协议概述SAE J1939协议是由美国汽车工程师协会(SAE,Society of Automotive Engineers)定义的一种用于重型车辆和工业设备中的通信协议,主要应用于车辆和设备之间的实时数据交换。J1939基于CAN(Controller Area Network)总线技术,使用29bit的扩展标识符和扩展数据帧,CAN通信速率为250Kbps,用于车载电子控制单元(ECU)之间的通信和控制。小北同学在之前也对J1939协议做过扫盲科普【科普系列】SAE J