Question: ( 3 0 points ) Suppose that a given optimization speeds up ALU operations by a factor of 2 . If the ALU operations collectively

(30 points) Suppose that a given optimization speeds up ALU operations by a
factor of 2. If the ALU operations collectively account for 50% of the execution
time AFTER the optimization, what is the overall speedup? What fraction of
execution time did ALU operations take up BEFORE the optimization?
( 3 0 points ) Suppose that a given optimization

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