The aarch64 instruction set has a madd instruction that performs integer multiply-adds. Cortex A725 and older Arm cores had dedicated integer multi-cycle pipes that could handle madd along with other complex integer instructions. Cortex X925 instead breaks madd into two micro-ops, and handles it with any of its four multiply-capable integer pipes. Likely, Arm wanted to increase throughput for that instruction without the cost of implementing three register file read ports for each multiply-capable pipe. Curiously, Arm’s optimization guide refers to the fourth scheduler’s pipes as “single/multi-cycle” pipes. “Multi-cycle” is now a misnomer though, because the core’s “single-cycle” integer pipes can handle multiplies, which have two cycle latency. On Cortex X925, “multi-cycle” pipes distinguish themselves by handling special operations and being able to access FP/vector related registers.
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2026-03-04 00:00:00:0 大会筹备工作就绪
It may not be that simple for the military to disentangle itself from Claude, however. Up until now, Anthropic's model has been the only one allowed for the military's most sensitive tasks in intelligence, weapons development and battlefield operations. Claude was reportedly used in the Venezuelan raid in which the US military exfiltrated the country's president, Nicolás Maduro, and his wife.