What does "Amdahl's Law" describe in the context of parallel processing?
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Correct answer: A. Maximum speedup achievable, considering serial and parallel portions of a program
Explanation
Amdahl's Law expresses the theoretical maximum speedup of a program when a fraction of it is executed in parallel, using Speedup = 1 / ((1-P) + P/N), where P is the parallelizable fraction and N is the number of processors. It shows that the inherently serial portion (1-P) of a program limits overall speedup no matter how many processors are added. It does not characterize message-passing efficiency, general algorithm efficiency, or fault tolerance. So it describes the maximum speedup achievable, considering the serial and parallel portions of a program.More Computer System Architecture questions
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