Computing>AP®︎/College Computer Science Principles>Algorithms>Unit test© 2024 Khan AcademyTerms of usePrivacy PolicyCookie NoticeUnit testGoogle ClassroomProblemA team of computer science researchers develop a program for searching trees that can be run in parallel.When they use distributed computing techniques to run the program on six computers in parallel, they find a speedup of 3.In this case, what does a speedup of 3 indicate?Choose 1 answer:Choose 1 answer:(Choice A) The program took three times as long to complete with six computers versus one computer.AThe program took three times as long to complete with six computers versus one computer.(Choice B) The program completed in a third of the time with six computers versus one computer.BThe program completed in a third of the time with six computers versus one computer.(Choice C) The program completed in three minutes more time with the six computers versus one computer.CThe program completed in three minutes more time with the six computers versus one computer.(Choice D) The program completed in three minutes less time with six computers versus one computer.DThe program completed in three minutes less time with six computers versus one computer.
Question
Computing>AP®︎/College Computer Science Principles>Algorithms>Unit test© 2024 Khan AcademyTerms of usePrivacy PolicyCookie NoticeUnit testGoogle ClassroomProblemA team of computer science researchers develop a program for searching trees that can be run in parallel.When they use distributed computing techniques to run the program on six computers in parallel, they find a speedup of 3.In this case, what does a speedup of 3 indicate?Choose 1 answer:Choose 1 answer:(Choice A) The program took three times as long to complete with six computers versus one computer.AThe program took three times as long to complete with six computers versus one computer.(Choice B) The program completed in a third of the time with six computers versus one computer.BThe program completed in a third of the time with six computers versus one computer.(Choice C) The program completed in three minutes more time with the six computers versus one computer.CThe program completed in three minutes more time with the six computers versus one computer.(Choice D) The program completed in three minutes less time with six computers versus one computer.DThe program completed in three minutes less time with six computers versus one computer.
Solution
The correct answer is (Choice B) The program completed in a third of the time with six computers versus one computer.
A speedup of 3 in parallel computing means that the program runs three times faster on six computers compared to running it on a single computer. Therefore, it completes in one-third of the time it would take on one computer.
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