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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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Квартиру в Петербурге затопило кипятком после обрушения потолка20:57
All of this is seamless and native -- there's no special apps you have to download, and no software compatibility issues to worry about. Apple has, by far, the most seamless cross-device functionality, and if you have an iPhone, Apple Watch, iPad, or AirPods, they all "just work" out of the box. Windows PCs like ThinkPads don't come anywhere close to this kind of synergy.
舆论谴责的中心不是xAI，不是马斯克，而是OpenAI和奥特曼，这本身就很值得玩味。