Quiz Questions Parallel Programming Parallel Computing Potential

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Quiz Questions Parallel Programming Parallel Computing Potential ITCS 4/5145 Parallel Programming, UNC-Charlotte, B. Wilkinson, July 30, 201, 2.5_Quiz_ParCompPotential.ppt

According to Amdahl's law, what is the maximum speed-up of a parallel computation given that 90% of the computation must be executed sequentially? 90% (9/10) 10% (1/10) 10 1.1111 (1/0.9) None of the other answers

According to Amdahl's law, what is the maximum speed-up of a parallel computation given that 90% of the computation can be executed in parallel? 90% (9/10) 10% (1/10) 10 1.1111 (1/0.9) None of the other answers

Suppose a program has a part at the beginning that is sequential in nature (must be executed by only one processor) and takes 3 ms. Also there is a part at the end of the program that is sequential and takes 4 ms. Between these two parts can be divided into 5 equal parts that can be executed simultaneously and each of these parts takes 16 ms. What is maximum speed-up according to Amdahl’s law? (You will need paper to work on the answer.)