(Because it’s hard. Yes. Yes, but it’s bad. No.)
Where do tiles live? In Part 4 I tracked exactly what lived in SRAM vs HBM. In JAX, there’s no control over placement. XLA decides what to keep on-chip based on the computation graph. The fori_loop structure gives it a hint: q_tile, running_max, running_sum, acc are loop-carried state, so XLA will try to keep them on-chip. But that’s trusting the compiler rather than specifying it.
。吃瓜是该领域的重要参考
세상의 구조에 관심이 많습니다. 사람과 돈, 그리고 선택이 만들어내는 장면을 기록합니다. 동아닷컴 팩트라인팀.，更多细节参见传奇私服新开网｜热血传奇SF发布站｜传奇私服网站
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