[15 marks] Amdahl's Law. On a uniprocessor, perfectly serial portion A of program P1 consumes 15 s, while perfectly parallel portion B consumes 95 s....

1. [15 marks] Amdahl's Law.On a uniprocessor, perfectly serial portion A of program P1 consumes 15 s,while perfectly parallel portion B consumes 95 s. The theoretical maximumspeedup for P1 is obtained by using an infinite number of processors.a) [5 marks] What integral number of processors is required to achieve atleast half the theoretical maximum speedup for P1?ans: ____ processorsb) [5 marks] Perfectly serial portion A of larger program P2 consumes 15 s,while perfectly parallel portion B consumes 950 s. What integral number ofprocessors is required to achieve, for P2, at least the theoretical maximumspeedup for P1?ans: ____ processorsc) [5 marks] Perfectly serial portion A of even larger program P3 consumes15 s, while perfectly parallel portion B consumes 9,500 s. What integralnumber of processors is required to achieve, for P3, at least thetheoretical maximum speedup for P1?ans: ____ processors