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Master Member
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引用:
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作者slot387
之前就有聽說過類似的消息,
好像主要原因是因為GPU和CPU處理的指令不同
GPU處理的指令比較簡單,CPU處理的指令比較複雜(可以多工)
不知道這樣解釋正不正確?  |
現在的GPGPU基本上就是所謂的浮點運算器,
以G80來說... 一顆晶片上擁有 128個浮點運算"核心"(SP), 而這些"核心"是可以獨立運作的, 也就是說"核心"B不需要等"核心"A的資料處理完
換言之... 128個 SP, 最佳狀態下一次可以處理 128個 frame,
然後CPU看哪個SP處理完畢了, 再丟新的frame給他算, 這可以說是平行運算的極致嗎?
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