
a.MMAC/MHz/DSP with scalar threads = 標量單元MAC/cycle? scalar的向量操作,vector是64bit,一條指令4個16bit mac,這里是8,是2個slot?
而且v66提到Scalar MAC and Floating Point capability is doubled, with each cluster now having its own dedicated units,那么 v66應該是 16 呀?
with HVX threads理解成向量單元MAC/cycle,vector是1024bit,一條指令64個16bit mac,那么也應該*2=128才能和上面對應上,這里對不上?
b.MFLOP/MHz = float運算/cycle, 支持單精度,標量單元一條指令2個float,v65也*2了,按2個slot能對上,而v66是8,是因為兩個culster不共享資源了
c.MMOPS/MHz =op/cycle?什么含義
d.v65 2個HVX units,v66 4個HVX units,那么vector reg數要*2,*4,還有load bandwidth算的時候也要1024bit*2,1024bit*4?
e.另外SM8150的16bit MMAC/MHz/DSP w/ HVX threads是64,但我看其他檔案上面有寫是128??
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標籤:Qualcomm開發
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