Assuming you can use infinite number of cpus for performance improvements, what would be the maximum speed up when the parallelizable portion is 95% of total execution time? i.2 ii.4 iii.10 iv.20

correct option is D i.e. 20

Explanation:

Given data:

Parallelizable portion is  given as 95%

so remaining will be serial portion i.e. 5%

we know that, for infinite number of cpus, maximum speed is calculated as

where f denote serial portion = 5% = 0.05

v = 20

hence so for serial portion of 5%, maximum speed is 20

correct option is D i.e. 20

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