问题详情

You are performing two sums, the first is a sum of two scalar variables and the second is a matrix sum of a pair of two— dimensional arrays—size 1000 by 1000. What speedup is achieved when the calculations are performed on size 1000 processors？ ()
A．50
B．100
C．999
D．none of the above请帮忙给出正确答案和分析，谢谢！