Someone asked me a question that I couldn't answer, so I thought I'd
pass it on to here.
Suppose I declare an array of a struct type, where the size of the
struct is not a multiple of the cacheline size. Each element in the
array is used by a different cpu.
If I understand it, this would mean that the last member in the data
belonging to one cpu shares a cacheline with the first member in the
data belonging to the next cpu.
Will this cause cacheline pingpong? If I do this sort of thing do I
need to ensure that the struct is a multiple of cacheline size (or
specify cacheline alignement)?
Thanks,
Chris
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