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2025-06-11 18:37:23 +08:00
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单指令多线程
一个指令 会有多条线程运行相同的指令
英伟达会给出多个修饰符,例如:Bit Mask可以指定哪些线程干活 哪些空转，既可支持分支操作
每个线程会进入锁步(lock-step)
线程会进入被遮掩(be masked out)
被遮掩的原因，例如：if(false) 或者循环次数不一致