3 ms·
Personal experience: when first looking at the data I often do lots of map /reduce style operations which might transform large portions of the dataframe. Ques
by ivalm 7y ago
Personal experience: when first looking at the data I often do lots of map /reduce style operations which might transform large portions of the dataframe.
Question, if you use CoW then presumably your variable blocks are no longer contiguous, wouldn't this really slow down vector operations?
- roblabla 7y ago> Question, if you use CoW then presumably your variable blocks are no longer contiguous, wouldn't this really slow down vector operations? I don't think so. Vector operations require the data to be aligned to whatever the vector size is, no? E.G. 16-byte vector ops require the data to be aligned to 16-byte, etc... At least that's my understanding.